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
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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
See how their reviews and ratings are sourced, scored, and moderated.
Happy Mammoth has changed my life!!
Happy Mammoth has changed my life!!! I honestly feel the way I used to! Maybe even better! For months, I struggled so bad with weight gain, brain fog, fatigue, joint pain, and the worse irritability. I kept reading the reviews about how great it was so I finally gave in purchased it. By day three, I was from under that dark cloud that I lived with almost every day. Today makes two weeks and all I can say is, I’m back baby!! I won’t stop taking this, ever. I tell everyone I know, that needs to know, about it. This product is a complete game changer and an answer to my prayers.
April 26, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you so much for sharing your experience. We’re truly glad to hear how much of a positive difference it’s made for you and how much better you’re feeling.
It’s wonderful to know you’re feeling like yourself again and seeing improvements across so many areas. We really appreciate your kind words and your support.
If you ever need anything along the way, feel free to reach out, we’re always here to help.
Warm regards,
Happy Mammoth
Hormone Harmony…Results
I started taking the Hormone Harmony the day I received it (April 9, 2026). I was having bad post menopausal symptoms. I already notice that I'm calmer, and I lost 12 pounds that wouldn't budge before. I will reorder when it's time! So good to start seeing results! Linda B. Indiana
April 9, 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 already noticing positive changes and feeling calmer.
It’s wonderful to know you’re starting to see results and feeling encouraged by the progress. We truly appreciate your feedback and your support.
If you ever need any assistance along the way, feel free to reach out, we’re always here to help.
Warm regards,
Happy Mammoth
Terrible customer service
Terrible customer service. I requested to cancel the whole order and the customer service person kept going back and forth asking the name and delaying intentionally I guess so the order was shipped and I sent it back and now they won’t pay shipment. I’m just so annoyed that I won’t order anymore from them. Don’t recommend.
April 25, 2026
Unprompted review
Reply from Happy Mammoth
Hi Mila,
Thank you for taking the time to share your experience. We understand how frustrating this situation must have been, especially with the back and forth communication.
We’ve reviewed your case and can see that your initial interaction was with our virtual assistant. At that stage, it wasn’t fully clear whether you wanted to cancel the order for Hormone Harmony or the one for Hormone Harmony PLUS+, which led to some delays while clarification was being requested. We understand how that may have felt, and we’re sorry for the inconvenience caused by the repeated questions.
Once your case was escalated, a member of our team advised rejecting the delivery so it could be returned without additional steps.
We will now follow up with you via email to confirm whether you were able to refuse the delivery successfully. If not, we’ll provide you with a return label so you can send the product back free of charge.
We appreciate your feedback and the opportunity to make this right.
Warm regards,
Happy Mammoth
Hormone harmony …
I love this product it makes a difference overall with mood skin and weight. Highly recommend this product.
April 25, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you so much for sharing your experience. We’re really glad to hear you’ve noticed such positive changes with your mood, skin, and overall wellbeing.
We truly appreciate your recommendation and your support. If you ever need any assistance, feel free to reach out, we’re always here to help.
Warm regards,
Happy Mammoth
Back on it and Feeling Great
I’ve been using Happy Mammoth for a few years and originally thought it wasn’t doing much because I still felt hot at night. I stopped and tried patches from my doctor, but I ended up with every symptom — nausea, mood swings, sensitivity, and the night heat didn’t improve.
That’s when it clicked that Happy Mammoth was helping me more than I realised. I went back on it last month, renewed my subscription, and I’m feeling good again. For me, it’s been genuinely effective.
April 25, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you so much for sharing your experience and for your continued support over the years.
We’re really glad to hear you’re feeling better again and that returning to the supplement has made a positive difference for you. It’s not uncommon to only fully notice the benefits after a break, so we appreciate you sharing that perspective.
We truly appreciate your feedback and your trust in us. If you ever need any support along the way, feel free to reach out, we’re always here to help.
Warm regards,
Happy Mammoth
The shipping was great and payment…
The shipping was great and payment options where great to. I'm only on first bottle so no big change other than mood is better at rhe min and night sweats are not as bad
March 1, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you for sharing your experience. We’re really glad to hear the shipping and payment process went smoothly for you.
It’s great to know you’re already noticing some positive changes with your mood and night sweats. As you continue, you may notice further improvements over time.
We truly appreciate you taking the time to share your feedback. If you ever need any support along the way, feel free to reach out, we’re always here to help.
Warm regards,
Happy Mammoth
Reply from Happy Mammoth
Hi there,
Thank you so much for your feedback. We’re really glad to hear you’re having a great experience.
We truly appreciate your recommendation and you taking the time to share it. If you ever need any support, feel free to reach out, we’re always here to help.
Warm regards,
Happy Mammoth
Easy to order
Easy to order, quick shipping. I ordered hormone harmony and they have definitely helped with my moods and decreased my sugar cravings
March 19, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you so much for sharing your experience. We’re really glad to hear the ordering process was smooth and that you received your order quickly.
It’s great to know the supplement has been helping with your mood and reducing sugar cravings. We truly appreciate your feedback and your support.
If you ever need anything, feel free to reach out, we’re always here to help.
Warm regards,
Happy Mammoth
Had my first month of Happy Mammoth Gut…
Had my first month of Happy Mammoth Gut Repair i have to say it doesnt taste nice or smell very nice but it did make a difference and you do get used to the smell and taste as long as you dont focus on it too much I felt a big difference in myself after the 1st week I had more energy in the morning I didn't get any heart burns or acid reflux or anything like that my stomach stayed really clear from all the nasties I felt more fresh when I got up and didn't feel grouchy the price is abit ridiculous £55 pound is alot of money and not everybody can afford it every month will i get it again definantly I think it does make a difference and dont pay too attention to any videos you see on Facebook because you definantly dont get a six pack or a perfect body amd it definantly hasnt defeated my stomach or lost.me.any weight but it is good and it does make a difference to you.jist not as much as alot of people have exaggerated it
March 1, 2026
Unprompted review
Reply from Happy Mammoth
Hi Ibby,
Thank you for your detailed and honest review. We’re really glad to hear you noticed improvements in your energy and digestion, even if the taste took some getting used to. If you’d ever need assistance, feel free to reach us at reviews@happymammoth.co.
Warm regards, Happy Mammoth
Reply from Happy Mammoth
Hi there,
Thank you for your feedback. We’re really glad to hear you’re feeling more balanced and calm.
We truly appreciate you taking the time to share your experience. If you ever need any support, feel free to reach out, we’re always here to help.
Warm regards,
Happy Mammoth
The product I am taking is the prebiotic collagen protein powder.
The product I am taking is the protein powder and it has helped to heal my very irritable gut. I take it every morning!
April 24, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you so much for sharing your experience. We’re really glad to hear it’s been helping support your gut and that it’s become part of your daily routine.
We truly appreciate you taking the time to leave your feedback. If you ever need any support, feel free to reach out, we’re always here to help.
Warm regards,
Happy Mammoth
Their supplements are fantastic
Their supplements are fantastic. The formulas are very active and innovative. Highly recommended, especially Ultimate weight loss!
April 23, 2026
Unprompted review
Reply from Happy Mammoth
Hi Francesca,
Thank you for your kind words. We’re so pleased to hear you value our formulas and are enjoying the results.
Warm regards, Happy Mammoth
Happy customer
The Product works, highly recommend. Glad I gave it a try.
April 23, 2026
Unprompted review
Reply from Happy Mammoth
Hi Michelle,
Thank you for your feedback. We’re so glad you gave it a try and are happy with the results.
Warm regards, Happy Mammoth
Mid on these, honestly.
I've been taking the weight one, the hormones one, the cellulite one, and the curbing appetite one for around a month now, and prior to that was taking weight loss and cellulite. If you're not an active person, these probably aren't worth your time or money. When I wasn't working out at least three days a week, they made zero difference, but when I work out on a semi-consistent basis, they might be helping a bit (honestly not sure). Taking all the pills does make you FEEL like you're Doing The Things™️, though, and that's half the battle.
April 23, 2026
Unprompted review
Reply from Happy Mammoth
Hi Katherine,
Thank you for taking the time to share such a detailed and honest review. We really appreciate the consistency and effort you’ve put into your routine, especially with both the supplements and your workouts.
You’ve made a great point in your feedback. Our products are designed to support your goals, and they tend to work best when paired with a balanced diet and regular exercise. As you’ve noticed, consistency in those areas can make a difference in how the body responds.
At the same time, individual reactions can vary, and the time it takes to notice results is different for everyone. Some people experience more noticeable changes sooner, while for others it can be more gradual or subtle.
We’d love to support you further and help you get the most out of your routine. If you’re open to it, please feel free to reach out to us at reviews@happymammoth.co with your details, and we can provide more personalized guidance based on your goals.
Thanks again for your thoughtful feedback, it really helps.
Warm regards,
Happy Mammoth
Can’t really tell if it’s working…
Can’t really tell if it’s working because there is no change
April 23, 2026
Unprompted review
Reply from Happy Mammoth
Hi Cheri,
Thank you for your honest feedback. We understand it can take time to notice changes, and results can vary from person to person. If you’d like support or guidance, please feel free to reach us at reviews@happymammoth.co.
Warm regards, Happy Mammoth
No bloat feel with the protein powder
No bloat feel with the protein powder. Works great.
April 22, 2026
Unprompted review
Reply from Happy Mammoth
Hi Andrew,
Thank you for sharing. We’re glad to hear the product is working well for you and helping reduce bloating.
Warm regards, Happy Mammoth
I have noticed that my ‘muffin too’ has…
I have noticed that my ‘muffin too’ has disappeared since the 6months of using Happy Mammoth. I feel lighter and more confident. Very happy!
April 22, 2026
Unprompted review
Reply from Happy Mammoth
Hi Wendy,
Thank you for your feedback. We’re so pleased to hear the progress you’ve seen over the past months and that you’re feeling more confident.
Warm regards, Happy Mammoth
Really prompt service
Really prompt service, even internationally. Great products that work 👍🏻
April 3, 2026
Unprompted review
Reply from Happy Mammoth
Hi there,
Thank you for your kind words. We’re glad to hear delivery has been prompt and that you’re enjoying the products.
Warm regards, Happy Mammoth
Good products
Good service. Great products. Gut repair - regular gut and hormone harmony- balanced energy
March 28, 2026
Unprompted review
Reply from Happy Mammoth
Hi Annemarie,
Thank you for your feedback. We’re so pleased to hear you’re happy with both the service and the results you’re seeing across the products.
Warm regards, Happy Mammoth
Loving Happy Mammoth
Loving Happy Mammoth! I’ve been on this for a couple years now and has seriously helped me with my mood and bloat symptoms.
April 22, 2026
Unprompted review
Reply from Happy Mammoth
Hi Marilin,
Thank you for your continued support. We’re so glad to hear the products have helped with your mood and bloating over time. It means a lot to have you with us for the past couple of years.
Warm regards, Happy Mammoth
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