Last updated June 2026 and originally published May 2024.
Written by Laura – I’m a mum of one, 39, based in the UK and have been experiencing haywire hormones since the birth of my son in 2021. I’m not a medical professional, this is just my first-hand and honest experience of taking Happy Mammoth’s Hormone Harmony for 12 weeks (and doing a little digging while doing so).
The Short Version
I took Happy Mammoth Hormone Harmony for 12 weeks and spent £129.99 doing so (2024 pricing).
My PMS symptoms were totally unchanged, my sleep was no better and my anxiety was at its worst (I later found out that one of Hormone Harmony’s key ingredients -ashwagandha – interacts with SSRIs).
I think that this experience in itself would be worth writing about. However, the longer I’ve looked into this company the more worrying details I’ve also uncovered.
Since I first published this review in 2024, Happy Mammoth have received two separate advertising bans upheld by the UK’s ASA, four products cancelled by Australia’s Therapeutic Goods Administration and the company has settled a US lawsuit over lead and mercury levels in two of their products (costing the company a whopping $55,000).
Additionally, an investigation by the Australian Financial Review found that independent lab testing showed no evidence that another of Happy Mammoth’s products – the Complete Belly Reset – resulted in weight loss. It also raised serious questions over the company’s real qualifications and expertise.
The founder of Happy Mammoth, Matthew Murphy, has since launched a men’s supplement brand called Beyond Alpha, selling products including EstroControl – a supplement to help men become more ‘masculine’. This has since been cancelled by the TGA in Australia (although it remains on sale in the UK).
With all this said, and if you’re still wondering whether Happy Mammoth’s Hormone Harmony is worth buying, then please do give this a read. Over the last two years – and like some sort of dogged investigative journalist – I’ve read every comment left on this review and tracked the company’s regulatory record across three countries.
What follows below is therefore pretty much everything I wish I’d known before I clicked ‘add to cart’ on Happy Mammoth’s Hormone Harmony.
Who am I and Why Does My Opinion Matter?
I’m Laura – one half of Twin Perspectives – a UK based blog covering travel, wellness and parenting. I’m 39, a mum and someone who has dealt with hormonal disruption since the birth of my son 5 years ago.
I bought Hormone Harmony with my own money in 2024 (as part of their then Hormone Synergy System bundle) and took it for 12 consecutive weeks across three menstrual cycles. I didn’t receive the product for free and I definitely have no affiliate relationship with Happy Mammoth.
This is not a sponsored post (it wouldn’t be a great one, if it was).
I’m someone who has previously written about testing my hormones at home with Hertility, using Magnesium L-Threonate for anxiety and Symprove for gut health – so I’ve got a reasonably informed baseline for how real supplements feel compared to Happy Mammoth’s Hormone Harmony.
Why I tried Hormone Harmony by Happy Mammoth
If you’re female, have periods, or are going through the menopause, then it’s likely you’ve been targeted with Facebook ads for a brand called Happy Mammoth.
With impressive claims and comforting branding, the supplements offered by this brand seem nothing short of miraculous.
This is particularly so for its Hormone Harmony formula. According to its users, this supplement apparently promotes rapid weight loss, the cessation of nearly every hormone-related ailment ever experienced, all whilst improving your mood, sleep and overall confidence.
After being bombarded by ads for Happy Mammoth’s Hormone Harmony for a few weeks – and suffering with increased PMS symptoms since the birth of my son – I decided to give it a go.
After all, the brand offers a 60 day guarantee, so what was the harm in trying?
Given that I hadn’t come across any bad reviews of Happy Mammoth, I was keen to try them for myself to see how I fared. The result? Overall I think I was just surprised that so few women have come forward to say Hormone Harmony isn’t exactly the magical elixir that it claims to be.
It did a whole lot of nothing.
My Symptoms Before Starting – Baseline
Before I describe my 12 weeks on Hormone Harmony, here’s what I was actually experiencing beforehand. This is really important because without my baseline, this review would be pretty meaningless.
Prior to having my son, my cycle was essentially a non-event. All I experienced was some mild irritability before my period and nothing more. After giving birth, however, everything changed – and it’s remained that way since (worsening, in fact, as I inch ever closer to 40).
My regular monthly symptoms included:
- Significant bloating and water retention in the week before my period
- Mood swings and tearfulness during PMS (not anger – crying, mostly)
- Massive anxiety spikes, particularly around ovulation and in the days after my period
- Night sweats
- Heavy periods with clotting
- Persistent brain fog
- Dry skin
At the time of first writing this review I was 37 – and decided to initially rule out perimenopause via blood tests through Hertility Health. Although these tests by no means give the whole picture of what’s going on – my hormone levels came back within the normal range and as my periods were also regular, my GP suggested I try the Mirena coil.
Ironically, as I was measuring and tracking my symptoms, I noticed that after 4 months on the coil, my symptoms were actually even worse – especially my anxiety – and so I quickly had it removed.
I then gave my body a bit of a break and after 6 months or so (and after being stalked by the brand online) I decided to give Hormone Harmony a go.
How I Tested It: Timeline and Method
- Product purchased: January 2024
- Duration: 12 weeks (three full menstrual cycles)
- Dosage: Three capsules daily, as directed, taken with food
- Method: I kept a daily symptom journal (via the Flo app), rating mood, bloating, sleep quality, anxiety and energy on a 1–10 scale
- Other variables: I didn’t change my diet, exercise routine or other supplements during the trial period (I also didn’t have the time or energy)
- Cost: £129.99
As Happy Mammoth themselves claim results within days, I thought 12 weeks and 3 cycles seemed more than a fair trial.
After all, if women were apparently shedding half their body weight in just 2 months while taking Hormone Harmony, just imagine what I might look and feel like by the end of 12 weeks!
Are Happy Mammoth a Real Company?
Firstly, who are Happy Mammoth and are they a legitimate company?
In short, yes – Happy Mammoth are a real company (let’s deal with the legitimate part later).
According to the company’s own site, the brand was the brainchild of Matthew Murphy and founded in 2017. Initially, the company’s focus was on gut health and based around their bone broth, aimed at healing so-called leaky guts.
From here, the company expanded – using natural, plant-based ingredients to create blends aimed at improving hormonal health. Trialling new plants and extracts, the Happy Mammoth team quickly grew, and now includes (apparent) nutritional scientists, a doctor and naturopathic physicians.
For a while, the brand claimed that they were the only Natural Health and Nutraceutical company owned by Australians and – by any standards – were booming. However, since first writing this blog post in 2024, the company have actually completely exited the Australian market altogether.
Make of that what you will.
But, are they legitimate?
While Happy Mammoth (also trading as Happy Koala LLC and Happy Natural Living Pty Ltd) are registered businesses, the real question is whether their products do what they claim.
As I’ll detail in length below, regulators in the UK, Australia and the United States have all found serious problems with not only their products, but their grand claims and dubious marketing tactics.
2026 Update: Beyond Alpha
While looking into Happy Mammoth, I noticed that the company have a new spin off series – Beyond Alpha.
The founder of Happy Mammoth, Matthew Murphy, has recently launched this second supplement brand, but this time targeting men – with products built around testosterone support to (wait for it) help reverse ‘declining masculinity’.
Beyond Alpha’s own website states openly that it was built on the back of Happy Mammoth, using the same ingredient suppliers, the same manufacturers and the same team of nutritional scientists – with Tobie Kokot, Happy Mammoth’s Chief Formulator, named as a key figure in both operations.
Their marketing playbook is strikingly (and depressingly) similar to Happy Mammoth: a quiz that apparently diagnoses your problem, dramatic testimonials about losing 10 pounds in a month, language about getting ‘the body, energy, strength and confidence you want – fast’, and a flagship product called ‘T Breakthrough™’.
I had a look at their customer reviews and can see they pretty much mirror the pattern seen with Hormone Harmony: glowing to the point of being almost unbelievable.
Importantly, an investigation into Beyond Alpha was completed by Australia’s Financial Review and found several damning bits of evidence.
As well as scrutinising their very exaggerated claims, it noted that Beyond Alpha’s EstroControl product was cancelled by the TGA in Australia, which ruled that its claims came with absolutely no evidence (a level of scrutiny that I imagine contributed to Happy Mammoth leaving the Australian market).
Only time will tell how long this product – and the sketchy marketing around it – will last in the UK.
Hormone Harmony Ingredients: What the Evidence Actually Says
So, how does Hormone Harmony actually work? What ingredients does it contain and are they genuinely as effective as they suggest?
Here’s what is actually inside Hormone Harmony and what the peer-reviewed research says about each ingredient (I’ve tried to link to PubMed entries where I can).
Ashwagandha (Withania somnifera) – there is some evidence that ashwagandha can reduce cortisol levels and self-reported stress. A 2019 study in Medicine found significant reductions in stress and cortisol in adults taking 240mg daily.
However, the evidence for direct hormonal effects in women with PMS or perimenopause is much thinner. It also carries a known interaction risk with SSRIs (something Happy Mammoth does not warn against, despite SSRIs being commonly prescribed for this demographic).
Wild Yam Root Extract (Dioscorea villosa) – wild yam is often marketed as a natural progesterone source. However, this is misleading -while yam contains diosgenin, which can be converted to progesterone in a laboratory, the human body cannot perform this conversion independently. There’s therefore no credible clinical evidence that wild yam supplementation raises progesterone levels in humans.
Maca Root Extract (Lepidium meyenii) – this one seems a bit more legit. Maca has some evidence for improving libido and reducing menopause-related psychological symptoms. A 2008 trial found modest improvements in sexual dysfunction.
Fennel Seed Extract (Foeniculum vulgare) – Fennel contains phytoestrogens and there is limited evidence it may reduce hot flashes. However, the evidence base is very small and the trials typically involved higher doses than those found in combined supplement products.
Kelp (relevant to their MenoDaily product) – Happy Mammoth cite kelp as supporting ‘hormonal weight loss’. Kelp contains iodine, which supports thyroid function – but a 2021 study in Nutrients found daily kelp supplementation had no significant effect on women’s weight, fat composition or blood pressure.
Verdict
The ultimate issue with Hormone Harmony is that alongside the fact the above ingredients show pretty underwhelming results, none of Happy Mammoth’s combined formulas have been subjected to clinical trials, nor do we know the amount of each ingredient (e.g. if they’re even at a therapeutic level).
There are no entries for Hormone Harmony in PubMed and their own customer reviews are anecdotal.
Importantly, while they cite the ingredients as having appeared in publications like The New Yorker and Forbes, this does not mean the publications endorsed or reviewed Hormone Harmony, or that the studies in question used anything like the doses in their formula.
Happy Mammoth’s website also carries this disclaimer at the bottom: ‘The statements made on this website have not been evaluated by the FDA. The products sold on this website are not intended to diagnose, treat, cure, or prevent any disease’.
Interesting – I thought they were the cure-all for women’s health?
How Much Does Hormone Harmony Cost?
One thing to touch upon in this honest review of Happy Mammoth Hormone Harmony is its cost.
This is not a cheap supplement.
- Single one time bottle (72 capsules): £54.99
- At three capsules per day, one bottle lasts 24 days – just under three and a half weeks
- Annual cost at full price: approximately £659
- Subscription options: two bottles £42, four bottles £40 each
The subscription is where I would urge particular caution.
It renews automatically and several readers have commented that cancellation was not straightforward. If you do try it, set a calendar reminder to cancel well before the next billing date if you decide it’s not working.
What I Didn’t Like About Happy Mammoth
The Quiz
Now, what I didn’t like about this product (aside from all of the above).
Firstly, Happy Mammoth suggest that there is an element of personalisation to their service, in the form of an online questionnaire (or ‘free assessment’).
You can take this two minute test and – apparently – find out which Happy Mammoth product will ‘change your life’.
In 2024, it claimed that by taking this quiz, you’d be offered personalised results based on over ‘14,000 scientific studies’ from the likes of Harvard, Yale and Columbia university (as of 2026, this claim seems to have disappeared from their website – presumably in light of their ASA ruling).
Currently, the quiz consists of 8 multiple choice questions.
It’s basic, pared back and not exactly nuanced.
When I took the quiz (which took all of 1 minute), Happy Mammoth confidently determined that my body was ‘overflowing with oestrogen’ and offered Hormone Harmony as the solution. There were no follow-up questions about my medical history, current medications (I take Sertraline) or existing diagnoses.
There was also no safeguarding for mental health disclosures. When I mentioned anxiety and low mood, the quiz did not suggest I see my GP – it just moved straight to the sale.
The result (in 2024) was followed by a heavily sales-driven email, apparently from ‘Matt, Happy Mammoth CEO’, offering a limited-time 15% discount. This kind of pseudo-diagnostic sales funnel is – in my view, at least – ethically questionable when applied to women seeking genuine medical help.
The quiz – both in 2024 and today – is, as far as I can tell, entirely performative and really just a sales pitch to get you to buy Hormone Harmony.
The weight loss claims are implausible
Another issue I have with Happy Mammoth is their relentless focus on weight and indeed, weight loss.
According to this brand, Hormone Harmony ‘optimises weight loss hormones responsible for metabolism and hunger […] shifting your body from accumulating fat to burning it’.
There’s not just a lot of negative language to unpack here, but some serious claims to examine, too.
The Australian Menopause Society’s President-Elect, Dr Christina Jang – a Brisbane endocrinologist – has said that Happy Mammoth’s advertising paints a ‘very negative view of being overweight’ and that the purported benefits of their products are, quite simply, ‘implausible’.
As she said: ‘a single supplement cannot achieve all the benefits that are claimed’.
Happy Mammoth claim that their product works by apparently ‘flushing’ out hormonal weight – leaving their users sometimes 30lb lighter in just 2 months.
I would take this statement with a pinch of salt. Firstly, their own weight loss product – Complete Belly Reset – was proven to not have any effect on weight, and secondly, any weight loss is likely just water retention.
This, of course, is not the same as fat loss. Cortisol-related visceral fat – that squishy abdominal fat around our middles – cannot just be flushed away. It requires sustained caloric deficit and exercise, and no supplement will change that (however much it tries to convince you otherwise).
Claiming otherwise to a demographic of women who are already worried about their bodies is, in my view, exploitative.
The science is all window dressing
Happy Mammoth (very liberally) reference academic publications on their site, refer to ‘potent formulas’ and point to incredible results. However, they then bury a disclaimer on their website admitting that their products have not been evaluated by the FDA and cannot actually treat disease.
In my opinion, you can’t have it both ways.
Either the science supports the claims, or it doesn’t – and on the available evidence, I’d happily conclude that it doesn’t, at least in any meaningful clinical sense.
The SSRI interaction issue was not flagged
As I mentioned above, ashwagandha has known interactions with SSRIs and thyroid medication. Given that Happy Mammoth specifically targets women in perimenopause and with hormonal difficulties – a population with very high rates of antidepressant use – this should be prominently disclosed.
However, it’s not visible or sign posted at any point on the consumer journey.
I think a lot of women (myself included) have been really negatively impacted by this lack of warning- as I discovered on this Reddit thread.
Rulings and Cancellations – What Regulators in Three Countries Have Said About Happy Mammoth
The UK banned Happy Mammoth’s ads – twice
The Advertising Standards Authority (ASA) – the body that regulates what companies are and aren’t allowed to claim in their advertising – has upheld two separate rulings against Happy Mammoth.
The first, Ruling A24-1241023, concerned a Facebook ad for their MenoDaily supplement. The ASA spotted it on 5 April 2024 as part of a wider effort to crack down on misleading menopause marketing, and the ruling found that the ad made unlawful claims (specifically, that a food supplement could treat or cure the symptoms of menopause).
The second, Ruling A24-1229687, was a separate upheld ruling against the same company.
Australia cancelled four of their products
This is the part that surprised me most when I looked into it.
Australia’s Therapeutic Goods Administration – their equivalent of our MHRA – cancelled the registrations of four Happy Mammoth products in 2024. These weren’t products pulled against Happy Mammoth’s will – they were actually formally requested by their own Australian parent company, Happy Natural Living Pty Ltd.
Given the scrutiny that this body has given Beyond Alpha, I do wonder if they just exited the market due to the scrutiny – and found a less controlled market in the UK and US.
The products cancelled were:
- Hormone Harmony — removed from the Australian Register of Therapeutic Goods on 27 June 2024
- Happy Hair — cancelled the same day
- MenoDaily — cancelled 19 September 2024
- EstroControl — cancelled the same day
Happy Natural Living Pty Ltd – the Australian company behind Happy Mammoth – also declared zero dollars turnover in Australia for 2024–25. Considering that this is a company that once described itself as a nine-figure Australian brand, it’s therefore quite surprising it just left the market so abruptly and quickly.
In the US, their products tested positive for lead and mercury
In July 2024, a US non-profit called the Environmental Research Center filed two legal notices against Happy Koala LLC (Happy Mammoth’s US entity) under California’s Proposition 65 law. In short, this requires warnings when products expose consumers to chemicals known to cause cancer or reproductive harm (the irony).
The first notice, filed 12 July 2024, alleged that Happy Mammoth NewSlim Complete Protein Meal Vanilla Bean and Happy Mammoth FitSlim SuperGreens Vanilla Bean contained lead and mercury at levels requiring a legal warning.
The second notice, filed 26 July 2024, alleged the same products contained PFOA – a synthetic chemical classified as a carcinogen and reproductive toxin.
A civil lawsuit followed in November 2024, which was settled by December.
Damningly, Happy Mammoth paid $55,000 and agreed to a permanent injunction: which pretty much means that they cannot sell the products in California unless lead levels are below legal levels.
Again, this is not Hormone Harmony. But when a company settles a lawsuit over heavy metals in their protein powder, it does rather undermine the message that they take quality control seriously.
What the press has said
It’s not just lowly bloggers like myself who are annoyed with Happy Mammoth – investigative journalists and medical experts have been raising the alarm, too.
The Nightly in Australia ran a detailed investigation into Happy Mammoth’s practices, quoting Dr Christina Jang – President-Elect of the Australasian Menopause Society and a Brisbane endocrinologist – who said their claimed benefits were ‘implausible’.
The Guardian in January 2025 examined the menopause supplement market more broadly, with multiple doctors describing it as peddling ‘junk science’ and BBC Panorama also looked at this space in depth (and mentioned Happy Mammoth).
Australian Financial Review Investigation (January 2026)
Just before I updated this review, the Australian Financial Review published one of the most detailed pieces of journalism written about Happy Mammoth.
In short, they ran independent lab testing of Happy Mammoth’s Complete Belly Reset product – commissioned by researchers at the University of New South Wales – and concluded that there was no evidence that the product would support weight loss.
The researchers also detected at least one compound consistent with a preservative, despite the label specifically stating that no preservatives are added.
The newspaper also examined Happy Mammoth’s medical review board in (revealing) detail. Tobie Kokot – the ‘award-winning nutritional scientist’ credited with formulating Happy Mammoth’s products – lists a diploma from Universität Malchin on LinkedIn.
Worryingly (and slightly hilariously) the newspaper found that this university does not appear to actually exist. Additionally, his other listed qualifications are from an Australian training college that specialises in yoga and sports coaching, rather than nutritional science.
Does Happy Mammoth Hormone Harmony Work? My Verdict
For me: no. After 12 weeks and three full menstrual cycles, it did very little.
Here is what my symptom journal showed at the end of 12 weeks:
- Weight: unchanged
- Bloating: unchanged
- Sleep quality: the same or marginally worse
- PMS severity: unchanged
- Anxiety: at its highest point of the trial period, not its lowest
- Brain fog: unchanged
- Period heaviness: unchanged
Happy Mammoth optimistically promised that bloating would reduce within 1 to 3 days, sleep would improve within 5 to 7 days, and hormonal weight would ‘shift’ within 15 to 30 days.
None of this happened in my case, let alone within those timeframes.
Could it work for someone else? Of course, I can’t rule it out – but there is something called the placebo effect and for complex, subjective symptoms like mood and energy, placebo responses can be real and meaningful.
What I can say with confidence is that the product’s claims are not supported by clinical evidence and that regulators in the UK, Australia and the US have all acted against the company in different ways.
What Thousands of Readers Have Told Me
When I first published this review in 2024, I expected a handful of responses. What I got instead were hundreds of comments, emails and messages from women who had been searching for exactly this kind of honest review of Happy Mammoth.
Below is a summary from some who have tried Happy Mammoth’s Hormone Harmony.
The most common reason women found this post: they couldn’t find any bad reviews
This came up again and again – and it tells you something.
“I have been trying to find something regarding people’s experiences that was not connected to the HM site.”
“I’ve struggled to find genuine ones. I’ve been bombarded by ads on socials for a while now.”
“I have been googling to see if anyone had talked about some of the issues you have raised using a variety of search sentences but got nowhere.”
“I came across this review when I googled ‘Happy Mammoth bad reviews’.”
When the only reviews you can find for a product are five-star, that’s not always a sign of an exceptional product – just an aggressive review management strategy.
Many readers experienced worsening symptoms
A significant number of readers reported that their symptoms – the very things Hormone Harmony promises to help – became worse after starting the product.
One reader, 35 and experiencing premature menopause symptoms, described what happened after two weeks:
“My mood swings were all over the place. My breast grew a size, were stone hard and so painful that I couldn’t even lay on my side. I felt drained, my joints ached, I had cravings non-stop. The worst thing was the constant bloating and constipation – my intestines were so sore to the point that I got worried it was something serious. I stopped immediately and felt instant relief after two days.”
Another reader, early in her perimenopause journey, wrote:
“I have just started taking HH and I have noticed an increase in menopausal symptoms over the last few days – for example, more hot flashes during both the day and night.”
And another, who had been taking Hormone Harmony alongside EstroControl:
“Two weeks in I’m bloated, getting cramps all over my body, exhausted. I fear I’m making my condition far worse… I’m in belief from HM advertising that they are actually preying on women’s weaknesses at a time we all are desperate for support.”
When she contacted Happy Mammoth about her early period and worsening symptoms, their response was that it was just her ‘hormones harmonising’.
I’ll let you draw your own conclusions about that.
Breast size increase came up multiple times
I want to flag this specifically because it’s not something Happy Mammoth mention and it appeared in the comments from more than one reader.
“I’ve been taking HH for 4 months for extreme hot flushes. It has helped with them but my bust size has increased from a 14H to a 14J in those months without a change in weight or diet. I’m not sure what is worse – the bust increase or going back to the hot flushes.”
Another reader taking Hormone Harmony for five months wrote:
“I have been taking HH for at least 5 months and I feel like it helped me sleep better, yes – but my midriff has thickened and my breasts feel huge. I feel it may be due to the progesterone in them.”
A significant number noticed no difference at all
For many readers, the outcome was – like me – simply nothing. After spending £50 – £110 and waiting weeks or months, there was zero measurable change.
“I have just finished one bottle of Happy Mammoth Hormone Harmony. I won’t be buying another one as I had no discernible change in symptoms.”
“I tried this and no results for me either. Bit sad as I thought this may help me with my symptoms.”
“I’ve been taking them for a year. I have seen no difference. Astonishingly expensive and I’m hugely disappointed.”
“After taking it for 2 weeks I do feel as though it has done nothing for me or made any difference. If anything I felt more bloated.”
It worked for some
In the interest of making sure this is a balanced review of Happy Mammoth, I want to include the readers who reported genuine improvements.
One reader, 50, whose periods had stopped at 46, wrote:
“After a week of taking Hormone Harmony all my symptoms disappeared. I feel calmer and no more night sweats. Yes, they are expensive, but they work for me.”
Another, 45, taking Hormone Harmony alongside EstroControl, described it as life-changing:
“I am happy and in control and don’t have brain fog. I have energy and focus and have lost all of the bloating and fluid retention.”
So – does Hormone Harmony work for some women? It definitely appears so. But what it is not, I guess, is the universal solution that it presents itself to be.
2026 Update: What Supplements Did Work for Me
It’s been two years since I first wrote this review and I’m staggered by how many times it’s been read.
Having seen even more negative press about Happy Mammoth and their ‘junk science’ in the last year – I stand by my claim that this is a company to avoid.
As such, and over the last year, I’ve tried other ways to balance my hormones and can happily say I’ve actually had a fair amount of success.
After trialling a few other expensive products – The Tenth, being one – I decided to just strip things back and try to balance my hormones more simply, without the aid of expensive supplements.
And, lo and behold, it worked.
Firstly, I worked with a nutritionist to really clean up my diet and lose some weight. This meant quitting all sugar, highly processed food and alcohol – focusing on eating around 1800 calories of whole foods per day. Crucially, I also had to eat around 130g of protein a day – something that is great for hormone regulation (something I didn’t previously know).
Not only did this new diet help me shift over a stone in weight, but I felt so much more even throughout the month. Of course, I still feel the ups and downs, but nothing compared to what it was.
I also did a few other boring things – I started walking 10,000 steps a day, went to two pilates classes a week and drank a minimum of 3 litres of water a day. I’d initially scoffed at the idea that these basic things could help me balance my hormones, but they really did.
The dietician also explained how important gut health is to hormone balance – it’s crucial, in fact. I therefore obediently got back on the Symprove train and within 8 weeks, noticed all my IBS related symptoms (which flared during PMS) had all but gone.
Lastly, I added in a few supplements that have made all of the difference. Magnesium L-Threonate has transformed how I sleep – and I now get a good 8 hours a night as a result. It’s also hugely (and I mean, this, truthfully) minimised my anxiety, so much so that I’ve had a good 24 months without any severe anxiety spells.
I also still take Fatty15, which has helped with muscle and joint pain (and helped restore my hair and nail health).
Overall, I feel in such a better place than I did in 2024 – healthier, happier, mentally stable and much more positive.
And all this without Hormone Happy.
Frequently Asked Questions
Does Happy Mammoth Hormone Harmony work? It did not work for me. I took it for 12 weeks and saw no measurable improvement in any of the symptoms I was tracking. Some women report positive experiences, but then again – others report worsening symptoms.
Ultimately, there are no clinical trials on the formula to provide any real evidence or guidance.
Is Happy Mammoth a scam? Happy Mammoth is a real company selling real products. However, the UK’s ASA has upheld two rulings against them for misleading advertising and the company paid $55,000 to settle a California Proposition 65 lawsuit over lead and mercury levels in two of their products.
Whether that constitutes a ‘scam’ is a matter of definition, but their marketing significantly overstates what their products can do.
Did Happy Mammoth have a lead and mercury problem? In 2024, the Environmental Research Center filed legal notices under California Proposition 65 alleging that two Happy Mammoth protein and greens products contained lead and mercury at levels requiring a warning. Happy Mammoth settled the case in December 2024, paying $55,000.
Can you take Hormone Harmony with SSRIs? Ashwagandha, an ingredient in Hormone Harmony, has potential interactions with SSRIs. If you are on any prescription medication, speak to your GP or pharmacist before taking this product. I’ve found that Happy Mammoth does not make this interaction clear in the purchasing process.
How do I get a refund from Happy Mammoth? Happy Mammoth offers a 60 day satisfaction guarantee. In my experience, their customer service team was cooperative when I needed to return a product (unopened). Contact them directly and clearly explain your situation, but do be aware the subscription renews automatically – so cancel quickly if you decide it’s not for you.
Is Happy Mammoth FDA or MHRA approved? No. Happy Mammoth state on their own website that their products have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. They are not MHRA-approved medicines either – they are simply food supplements.
What should I take instead of Hormone Harmony? I’m not a doctor, but worked for me personally was upping my protein intake, Magnesium L-Threonate for sleep and anxiety, Symprove for gut health and consistent daily movement. For significant symptoms, please speak to your GP about clinically tested options, including HRT.
Are Happy Mammoth still selling in Australia? Following the TGA’s cancellation of four of their products in 2024 and the company declaring $0 Australian turnover for 2024–25, it seems that Happy Mammoth has pretty much withdrawn from the Australian market.
Who is Tobie Kokot and is he a qualified nutritional scientist? Tobie Kokot is listed as Happy Mammoth’s Chief Nutritional Scientist and Lead Formulator. An investigation by the Australian Financial Review in January 2026 found that one of the qualifications listed on his LinkedIn profile — a diploma from Universität Malchin — appears to be from a university that doesn’t actually exist. His other listed qualifications are from an Australian training college specialising in yoga and sports coaching.
Draw your own conclusions, I say.
This review was based on my own 12-week experience purchasing Hormone Harmony at full price in January 2024. I have no commercial relationship with Happy Mammoth and all links to products I’ve found helpful are based on my own positive experience.
This review is not medical advice, so please do consult a healthcare professional before starting or stopping any supplement.
Last reviewed and updated: June 2026.