I bought this to help with my thyroid issues, having taken Levothyroxin for two years. Sadly, the product does not appear to have had any positive effects with my T4. I understand that not all product... See more
Company replied
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Review summary
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Unable to get support. No information about possible side effects. Two weeks into supplement no change at all. HAVE HEARD BACK FROM GREENLEAF. Im satisfied and will continue to use this product in... See more
Company replied
Ordering and payment was easy. I purchased 2 bottles, so 2 months supply. Nearly finished the first month and I feel much better. Puffiness has gone down, my whole body feels firmer and I am happier... See more
Company replied
I've started taking these alongside my thyroid medication and have seen an improvement in energy levels, not massive but good enough. My mood has improved too, so I'm happy with making this choice.
Company replied
Company details
Contact info
Coolsingel 104, 3011AG, Rotterdam, Netherlands
- support@greenleafblends.nl
- greenleaf-blends.nl
3.8
Great
3K reviews
Replied to 99% of negative reviews
Typically replies within 24 hours
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Actual order price and delivery...I've…
Actual order price and delivery...I've been taking these for a year and numbers went down with THYROID readings but nothing else changed..ie...moods..energy..weight etc..
March 14, 2026
Reply from Greenleaf Blends
Hi Susan,
Thank you for sharing your long-term experience with us. We’re pleased to hear there have been some positive changes in your thyroid readings, although we’re sorry to hear other areas haven’t improved as you had hoped.
As with many supplements, individual responses can vary, and we truly appreciate you giving the product a fair trial over time and taking the time to share your feedback.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Really not working for me
Really not working for me. Started with awful stomach cramps and constipation. Reduced the dose but still not great. Put on an extra pound of weight every day. Have stopped taking them now 😢
The support from the company has been very helpful and offered 50% refund
March 14, 2026
Reply from Greenleaf Blends
Hi Jill,
Thank you for sharing your experience, and we’re very sorry to hear you’ve been feeling unwell.
While many customers tolerate the supplement well, we understand that individual sensitivities can occur when introducing something new. If you’re experiencing discomfort, stopping use is the right decision, and we would recommend speaking with a healthcare professional if symptoms persist.
Our support team has already sent you an email so we can communicate with you directly and resolve this as quickly as possible. Please check your inbox, and if needed, you can also reach us anytime at support@greenleafblends.com.
We appreciate your patience and look forward to resolving this for you.
Kind regards,
Team Greenleaf Blends
Scam
Scam , terrible customer service. Theft of money . Product rubbish too.
Blocking my emails , refusing to resolve this matter .
I am now getting a refund via my bank.
Avoid these fraudsters!
March 7, 2026
Reply from Greenleaf Blends
Hi Karen,
Thank you for sharing your concerns. We’re sorry to hear about your experience and understand how frustrating this must feel.
We would like to reassure you that we do not create subscriptions without customer consent. Any repeat order is linked to a subscription or refill option selected during checkout, which can be cancelled at any time. We appreciate that this may not always feel clear, and we are continuously working to improve how this is communicated.
We’re also sorry to hear you’ve had difficulty reaching us — this is not the level of service we aim to provide. We would very much like the opportunity to review your case, ensure any subscription is cancelled, and assist with resolving this as quickly as possible.
Our support team has already sent you an email so we can communicate with you directly and resolve this as quickly as possible. Please check your inbox, and if needed, you can also reach us anytime at support@greenleafblends.com.
We appreciate your patience and look forward to resolving this for you.
Kind regards,
Team Greenleaf Blends
Delivery to Post Office was great
Delivery to Post Office was great. A delay in receipt was down to them.
March 11, 2026
Reply from Greenleaf Blends
Hi Janet,
Thank you for your feedback, we’re glad to hear you found the ordering process easy. We really appreciate you taking the time to share your experience!
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
I have used the smart protein for a…
I have used the smart protein for a long time, & find it works! It does take a long time from order to arrive, so need to make a note to self to order before I’m halfway through!
March 13, 2026
Reply from Greenleaf Blends
Hi Terri,
Thank you so much for your continued support, it means a lot to us that you’ve been using Smart Protein for such a long time and are having a positive experience.
We’re sorry that delivery has taken longer than expected at times, and we really appreciate your patience. Your tip about ordering ahead is a great one, and we’re always working to improve delivery times.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Reply from Greenleaf Blends
Hi Kathy,
Thank you for your feedback, we really appreciate it! We’re glad you had a positive experience and hope to serve you again in the future.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Excellent product and service.
I have to say I was sceptical when I read all the reviews about how wonderful the Smart Protein supplement is but I thought it was worth a try. I was recovering from major surgery, not sleeping, constantly absolutely exhausted no matter what I did, and feeling so low that every day was a real challenge. Well, all I can say is WOW! After just a week I was sleeping solidly all night, had noticeably more energy and my mood had sky rocketed. I can honestly say that I feel the Smart Protein blend has given me my life back! I really never believed it would make such a difference. I even stopped it for a week just to see if the improvements were a coincidence, but they weren't; within 2 days I was back to square one. I am now on my second month of usage and feel amazing. I have just received my next order. Got a great discount on a six month supply with free postage as well. The order was well packed and dispatched quickly - within 24 hrs - but delivery to the UK from the Netherlands was slow, took 2 weeks. This though was Royal Mail's fault not the company's. I was able to track it though so knew what was going on. All in all, I would definitely recommend this product and company.
March 13, 2026
Reply from Greenleaf Blends
Hi Wendy,
Thank you so much for your incredibly thoughtful feedback. We’re truly delighted to hear you’re feeling so positive and that your experience has made such a meaningful difference for you.
We also really appreciate your balanced comments regarding delivery, and your understanding that courier delays can occasionally occur outside of our control.
Thank you again for taking the time to share your journey and for your continued support, it means a great deal to us.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Its a scam
Its a scam . You order once and they say you have subscribed with no indication of this. They don't respond well , if at all to emails. There is no account set up to cancel any said subscription. Having to contact bank for a refund using the emails I have sent and my original order as proof.
Offering me 50% off is not acceptable! This is just the worst customer service I have ever experienced!
April 2, 2026
Unprompted review
Reply from Greenleaf Blends
Hi Karen,
Thank you for sharing your concerns. We’re sorry to hear about your experience and understand how frustrating this must feel.
We would like to reassure you that we do not create subscriptions without customer consent. Any repeat order is linked to a subscription or refill option selected during checkout, which can be cancelled at any time. We appreciate that this may not always feel clear, and we are continuously working to improve how this is communicated.
We’re also sorry to hear you’ve had difficulty reaching us — this is not the level of service we aim to provide. We would very much like the opportunity to review your case, ensure any subscription is cancelled, and assist with resolving this as quickly as possible.
Our support team has already sent you an email so we can communicate with you directly and resolve this as quickly as possible. Please check your inbox, and if needed, you can also reach us anytime at support@greenleafblends.com.
We appreciate your patience and look forward to resolving this for you.
Kind regards,
Team Greenleaf Blends
It’s helped me reduce my thyroxin from…
It’s helped me reduce my thyroxin from 175 to 125
March 12, 2026
Reply from Greenleaf Blends
Hi Lesley,
Thank you for sharing your experience with us. We’re pleased to hear you’re feeling positive and that your treatment is being reviewed and adjusted with your healthcare professional.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Reply from Greenleaf Blends
Hi L,
Thank you for your feedback, we’re glad to hear you found the ordering process easy. We really appreciate you taking the time to share your experience!
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Very good products
A very good, reliable and professional company. I really like their products, and have ordered them quite a few times now.
March 11, 2026
Reply from Greenleaf Blends
Hi Sheila,
Thank you for your feedback, we really appreciate it! We’re glad you had a positive experience and hope to serve you again in the future.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Reply from Greenleaf Blends
Hi Jacqueline,
Thank you for your feedback, we really appreciate it! We’re glad you had a positive experience and hope to serve you again in the future.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Reply from Greenleaf Blends
Hi Samantha,
Thank you for your feedback, we really appreciate it! We’re glad you had a positive experience and hope to serve you again in the future.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
I am on my second bottle of smart…
I am on my second bottle of smart protein, been taking it for 6 weeks now and have had no beneficial effects from it I will continue taking it til the bottle runs out but I doubt whether I shall be ordering again.
March 10, 2026
Reply from Greenleaf Blends
Hi Eleanor,
Thank you for your feedback. We’re sorry to hear you haven’t noticed the benefits you were hoping for so far.
As with many supplements, individual responses can vary and it can sometimes take longer for some people to notice changes. We appreciate you giving the product a fair trial and taking the time to share your experience.
Our support team has already sent you an email so we can communicate with you directly and resolve this as quickly as possible. Please check your inbox, and if needed, you can also reach us anytime at support@greenleafblends.com.
We appreciate your patience and look forward to resolving this for you.
Kind regards,
Team Greenleaf Blends
Haven’t used as yet but everything was…
Haven’t used as yet but everything was fine either way ordering and delivery
A bit sceptical at present but will wait and see
February 10, 2026
Reply from Greenleaf Blends
Hi Tracy,
Thank you for your feedback. We’re pleased to hear the ordering and delivery process went smoothly.
We understand it’s early days and appreciate you giving the product the opportunity, we hope you have a positive experience as you get started.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Hypothyroid - Smart Protein did not improve my symptoms
I am hypothyroid. Tried 3 months of Smart Protein - no improvement in symptoms.
I now get advertising every single day offering discounts.
Was so hopeful that this product would make a difference. Gutted it has had no impact for me whatsoever.
March 31, 2026
Unprompted review
Reply from Greenleaf Blends
Hi there,
Thank you for sharing your experience. We’re really sorry to hear that you didn’t notice the improvements you were hoping for, especially after giving the product a full three-month trial — we completely understand how disappointing that can feel.
As with many supplements, individual responses can vary, particularly with long-standing conditions. We also apologise if our emails have felt excessive, your feedback is noted, and we are always working to improve our communication.
If you’d like to contact our support team, we’d be happy to look into your experience further and assist where we can.
Kind regards,
Team Greenleaf Blends
Reply from Greenleaf Blends
Hi Pamela,
Thank you for your feedback, we really appreciate it! We’re glad you had a positive experience and hope to serve you again in the future.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Taking smart protein- just been to the…
Taking smart protein- just been to the doctors & he has reduced my levothyroxine pills. Blood test in 6 weeks to double check it’s at the right level- hopefully all will be good.
March 10, 2026
Reply from Greenleaf Blends
Hi Jackie,
Thank you for sharing your experience with us. We’re pleased to hear you’re feeling positive and that your GP is monitoring your progress closely.
We always encourage continuing to work alongside your healthcare professional when making any adjustments to medication, and we truly appreciate you taking the time to share your update.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Good explanation of product and prompt…
Good explanation of product and prompt delivery service. However have been taking Smart Protein since 18th Feb and as yet don’t feel any different. Have had under active thyroid since I was 30 so wondering if it will work for me. My sleep has always been 4/5 hours per night but in the last year have put in so much weight and I just can’t lose it. Still in my second pot so fingers crossed
March 31, 2026
Reply from Greenleaf Blends
Hi Diane,
Thank you for your thoughtful feedback. We’re pleased to hear you found the product information helpful and that delivery was prompt.
We understand it can take time to notice changes, especially with long-standing conditions, and as you’re still early in your journey, we appreciate you giving the product the opportunity. We hope you have a positive experience as you continue.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
Great delivery really quick
Great delivery really quick . I take 3 tablets in a morning before breakfast and I have started losing weight though slowly . I eat healthily but nothing was shifting hopefully it will now .
March 9, 2026
Reply from Greenleaf Blends
Hi Elaine,
Thank you so much for your lovely feedback. We’re delighted to hear your delivery was quick and that you’re feeling positive about your progress so far.
Everyone’s journey is different, and we’re glad to hear things are moving in the right direction. We truly appreciate you taking the time to share your experience.
If you ever have any questions or need assistance, you can reach us anytime at support@greenleafblends.com.
Kind regards,
Team Greenleaf Blends
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