I tried this and noticed that my face started losing the inflamed look, especially on the sides of my face. After about a week and a half I stopped waking up in the middle of the night covered in swea... See more
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Just finished my first bottle. Haven't noticed anything different, however I've a second bottle to try so, fingers crossed. The product arrived fairly quick. It was well packaged. Plenty information s... See more
Company replied
I’m going through perimenopause and Hormone Harmony has honestly become something I cannot live without right now. If I forgot one morning, it actually takes me approx. two weeks to feel more stable a... See more
Company replied
I started taking these supplements about a year ago they worked well after 6 months I stopped thinking I didn’t need them they were just a placebo affect!!! Wrong!! 3 month later I had mood swings, ni... See more
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Company details
About Happy Mammoth
Written by the company
At Happy Mammoth, we believe that gut and hormonal health are the building blocks for a healthy life. That's why we're dedicated to supporting women in their journey to maintain optimal gut and hormonal health.
Contact info
United States
- support@happymammoth.co
- happymammoth.com
4.2
Great
13K reviews
Replied to 96% of negative reviews
Typically replies within 24 hours
How this company uses Trustpilot
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I am a 49 year old perimenopausal…
I am a 49 year old perimenopausal woman. I had been having migraines,hot flashes and low energy/mood especially around the time if my period. I have been taking Hormone harmony for the past 3 week and I feel so much better. I have my energy back and no migraines. Even the brain fog isn't as bad. Would recommend this product
April 8, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you so much for sharing your experience. We’re really glad to hear you’re feeling better, especially with your energy, mood, and migraines improving.
It’s great to know the supplement has been a helpful support for you during this time, and we truly appreciate your recommendation.
If you ever have any questions or would like support along the way, please feel free to reach out to us, we’re always here to help.
Warm regards,
Happy Mammoth
Great product and customers service .
Great product and customers service .
Helped me a lit with IBS.
SUPER GRATEFUL
April 8, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you so much for your kind words. We’re really glad to hear the product has helped you and that you’ve had a positive experience with our customer service.
We truly appreciate your support and you taking the time to share your experience.
Warm regards,
Happy Mammoth
Finishing first bottle
Finishing first bottle.
Won’t start the second because of it causing constipation which has taken me years to resolve with magnesium.
Feel more bloated & actually hungrier which is crazy.
I tried 😕
April 7, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you for sharing your experience with us. We’re sorry to hear this has been your experience, especially given the progress you’ve made previously.
While some people may notice temporary digestive changes at the beginning, symptoms like constipation and increased discomfort can also indicate that the product isn’t the right fit for you. You may consider pausing use and, if needed, checking in with your healthcare professional.
We’d really like to support you further. Please feel free to reach out to us at reviews@happymammoth.co with your order details so we can take a closer look and assist you directly. And if you decide not to continue, please remember our 60 day money back guarantee is there for you.
Warm regards,
Happy Mammoth.
The taste is good and I feel less full.
The taste is good and I feel less full.
April 7, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you for your feedback. We’re really glad to hear you’re enjoying the taste and noticing a difference in how you feel.
We truly appreciate you taking the time to share your experience.
Warm regards,
Happy Mammoth
Easy ordering and fast delivery
Easy ordering and fast delivery. I’ve been taking the supplements for six weeks now and couldn’t do without them!
April 7, 2026
Unprompted review
Reply from Happy Mammoth
Hi Nicola,
Thank you for your kind feedback. We’re so pleased to hear ordering and delivery were smooth, and that the supplements have become such an important part of your routine.
Warm regards, Happy Mammoth
Skeptical at first, but happy so far
I am only in my third week of using Hormone Harmony but have noticed that I am sleeping better and am having fewer hot flashes which I am really pleased about. I feel my energy seems to have increased as well.
April 6, 2026
Unprompted review
Reply from Happy Mammoth
Hi Nicole,
Thank you for sharing your experience. We’re glad to hear you’re already noticing better sleep, fewer hot flashes and more energy in just a few weeks.
Warm regards, Happy Mammoth
Hormone Harmony
Hormone Harmony: I really enjoyed the hormone harmony…I think my husband may have loved the fact that I finally found something that helped me! Hahaha My moods seemed to regulate, my brain fog seemed to have subsided, my cravings weren’t as bad. Everything I needed all in one supplement.
January 1, 2026
Unprompted review
Reply from Happy Mammoth
Hi Angela,
Thank you for your lovely review. We’re so pleased to hear Hormone Harmony has helped support your mood, clarity and cravings, and that it’s made a positive difference in your daily life.
Warm regards, Happy Mammoth
TRUTHFUL & AMAZING PRODUCT !!!!
I researched many products for hormonal changes in woman after 50 and the cortisol effect. I decided on Hormone Harmony and I am sooo glad that I did. It has helped with the stubborn weight loss after trying every diet and exercise routine on the planet. Hormone Harmony has also helped with the bloating effect in my face and belly. I have seen the changes in about 2 months as well as friends and family. I just want to thank Hormone Harmony for being truthful and honest with what their product can deliver to woman over 50 .
April 6, 2026
Unprompted review
Reply from Happy Mammoth
Hi Suzanne,
Thank you for such a thoughtful and detailed review. We’re delighted to hear the positive changes you’ve experienced, especially with bloating and weight, and that others around you have noticed too. Your trust means a lot to us.
Warm regards, Happy Mammoth
A great product
A great product, helps with hair, skin and nails are the best since taking the Collegan powder in my shakes every morning
April 6, 2026
Unprompted review
Reply from Happy Mammoth
Hi Jacqueline,
Thank you for sharing. We’re so glad to hear you’re seeing great results with your hair, skin and nails.
Warm regards, Happy Mammoth
Only gives you 1 hour to modify an order and then won’t help amend.
I tried the Hormone Harmony but they didn’t work for me so cancelled the subscription.
Something has gone wrong and my subscription hasn’t been cancelled. I received an email to say that my order has been processed and I have 1 hour to make any changes! I was on a flight when the email came through and so I missed the opportunity to cancel my order. I have tried the chat function, they couldn’t help and said I would be passed to an advisor within around 15 minutes. It’s now been an hour and I am still no closer to being able to cancel the order. Giving customers 1 hour to change an order is unacceptable.
April 5, 2026
Unprompted review
Reply from Happy Mammoth
Hi Collette
Thank you for taking the time to share your experience. We understand how frustrating this situation must have been, especially when you believed your subscription had already been cancelled and weren’t able to act within the next hour.
We’d really like to look into what happened here and make sure your account and order are handled correctly. To do that, could you please provide your account details so we can review this further? Alternatively, you can reach out to us directly at reviews@happymammoth.co and our team will be happy to assist you as quickly as possible.
We’re here to help get this sorted for you and ensure everything is resolved properly.
Warm regards,
Happy Mammoth
Huge let down
Huge let down, so many positive reviews, not possible to give 0 stars. Tried two products, neither made any difference to hormone or gut health. Didnt work for me and money guarantee is not forthcoming
April 5, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you for sharing your experience. We’re sorry to hear that the products didn’t meet your expectations, and we understand how disappointing that can feel.
We’d really like to support you and take a closer look at what may have happened with your order and refund request. We do offer a 60 day money back guarantee from the date of purchase, which allows you to try the product and request a refund if it’s not the right fit. You can find full details on how the guarantee works on our Support page:
https://happymammoth.com/pages/support
If your request hasn’t been processed as expected, we want to make that right. Please reach out to us at reviews@happymammoth.co or share your account details with us, and we’ll investigate this further and assist you accordingly.
We’re here to help and ensure your case is properly reviewed.
Warm regards,
Happy Mammoth
Reply from Happy Mammoth
Hi Bettina,
Thank you for your feedback. We’re pleased to hear you’re experiencing more energy and better sleep.
Warm regards, Happy Mammoth
Prebiotic Collagen Protein
I've been using Prebiotic Collagen Protein for the last several months and it does work. Highly Recommended and I also love the Vanilla taste. It's awesome. A++
April 1, 2026
Unprompted review
Reply from Happy Mammoth
Hi Jim,
Thank you for your kind words. We’re glad you’re enjoying the Prebiotic Collagen Protein and the vanilla flavor, and that it’s working well for you.
Warm regards, Happy Mammoth
It worked for me!!
I have been using hormone hormony, mood switch and magnesium breakthrough for the past 4 weeks and I would say I am 95% better than what I was. I have more energy, I'm sleeping better and my family say I am more approachable. My mood swings have eased considerably! I look forward to seeing how I am in the next 4 weeks!
April 5, 2026
Unprompted review
Reply from Happy Mammoth
Hi Hayley,
Thank you for sharing your experience. We’re so pleased to hear how much better you’re feeling after a few weeks. We hope you continue to see great progress.
Warm regards, Happy Mammoth
will buy regular..
will buy regular..
everything felt different after consumed
Prebiotic collagen, Hormon Plus and Hormon Menopause.
been 3 times already bought those product.
April 5, 2026
Unprompted review
Reply from Happy Mammoth
Hi Febrina,
Thank you for your support. We’re so glad to hear you’ve felt a difference and continue to reorder our products.
Warm regards, Happy Mammoth
Do not bother
I am on my third bottle of hormone harmony , I have had no change at all.
I am still having hot flushes and night sweats. Lost no weight. Sleep pattern is still the same . I am also nauseous after taking. Also getting headaches. I am out of pocket by £150 and no better off. Very disappointed
April 4, 2026
Unprompted review
Reply from Happy Mammoth
Hi Kelly,
Thank you for sharing your experience with us. We’re really sorry to hear this has been your experience, especially after giving the product a fair amount of time.
We completely understand your frustration.
We’re also sorry to hear about the nausea and headaches you’ve experienced. While many customers respond well, individual reactions can vary, and symptoms like these may indicate that the product isn’t the right fit for you. We would recommend pausing use and consulting with your healthcare professional if symptoms continue.
We’d also like to let you know that we’ve already taken action and issued a refund for one jar under our 60 day money back guarantee. Additionally, you’re welcome to return any unopened units you may still have for a full refund. You can simply reply to the follow-up email we’ve sent you, and we’ll guide you through the next steps.
Please let us know if you have any questions or if we can help you out with anything else.
Warm regards,
Happy Mammoth.
Great experience and a product that truly works!!
Fast, efficient service with no hassle. The Prebiotic Collagen Protein is one of the best supplements on the market today. It is one of the very few that actually does what it says it will and fast!! I wish I could have found it years ago, because it has improved my quality of life and I will always take it from this point forward. It has transformed my waistline and did it incredibly fast and it has reshaped my digestive system in a fantastic way! My stomach used to be bloated out all of the time. It was huge. After one dose it was gone!!! Completely as God is my witness!! I have abs again at 57 years old
April 3, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you so much for sharing your experience. We’re really glad to hear how much of a positive impact the supplement has had on your wellbeing and daily life.
It’s wonderful to know you’ve noticed such meaningful changes, and we truly appreciate your kind words and support.
Warm regards,
Happy Mammoth
Happy for sure
Every person is different but Hormone Harmony has worked wonders for me! I have felt so much better during the day and a couple extra hours of sleep at night. I was so happy with that and gave added Weight Control and Cellulite Control. In 2 months, I have lost 6 pounds (slow but steady) and my husband has noticed the difference of my cellulite reduction. Try it! This might be your winning combination, too.
February 1, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you so much for sharing your experience. We’re really glad to hear how much better you’ve been feeling, especially with your energy, sleep, and overall balance.
It’s wonderful to know you’ve seen steady progress and that it’s making a noticeable difference for you. We truly appreciate you taking the time to share your journey and recommendation.
Warm regards,
Happy Mammoth
Total balanced feeling
Total balanced feeling, great sleep and less bloated FOR SURE!
April 4, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you so much for sharing your experience. We’re really glad to hear you’re feeling more balanced, sleeping better, and less bloated.
We truly appreciate you taking the time to leave your feedback.
Warm regards,
Happy Mammoth
Metabolic Harmony very expensive
I have used this product for at least 6 months now and I am honestly not sure whether there has been any benefit. The subscription has been costing me £51.73 including delivery a month which isn’t cheap. It certainly hasn’t had a negative effect except the price and the only thing I will say is that the subscription is easy to manage so cancelling wasn’t a problem however I was offered a discount to stay. If they offered the discount at the start I probably wouldn’t have cancelled in the first place.
April 4, 2026
Unprompted review
Reply from Happy Mammoth
Hi Kellie,
Thank you for taking the time to share your experience after using Metabolic Harmony for several months. This kind of detailed feedback is truly valuable. It’s completely understandable that it can be difficult to assess results when the changes aren’t clearly noticeable, even with consistent use.
It’s great to hear that managing your subscription was straightforward, and we appreciate you highlighting that part of your experience as well.
We’d love to take a closer look at your journey and see how we can better support you. If you’re open to it, please reach out to us at reviews@happymammoth.co with your details, and our team will be happy to assist further. There may also be an opportunity to explore a subscription setup that better suits your needs.
Thank you again for your feedback, it helps us continue improving.
Warm regards,
Happy Mammoth
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