Benjamin P.
Excellent verified purity and quality…
Excellent verified purity and quality of product at the best prices I have seen. Very helpful and responsive with questions.

Fit Aminos is a research peptide supplier focused on providing high-quality, lab-tested compounds at fair and accessible prices. Our mission is to make reliable research peptides available without the inflated costs often seen in the industry, while maintaining strict standards for quality, transparency, and consistency.We offer a wide selection of research peptides including GLP-1 analogs, recovery peptides, growth hormone signaling peptides, and metabolic research compounds. Each product is carefully sourced and handled with an emphasis on purity and consistency to support research applications. All products sold by Fit Aminos are intended for research use only.At Fit Aminos, transparency is a core part of our approach. We strive to provide clear product information and maintain strong quality control practices to ensure our customers receive dependable compounds for their research needs. Our team works to ensure every order is processed quickly, packaged securely, and delivered reliably.Customer experience is also a top priority. We focus on responsive communication, dependable fulfillment, and straightforward ordering so researchers and customers can feel confident when purchasing from us.Fit Aminos proudly serves customers across the United States. Our goal is to build long-term trust by delivering consistent quality, fair pricing, and a reliable purchasing experience every time.
Fit Aminos (fitaminos.com) has 40 customer reviews on Five Star Index, with an average rating of 4.2 out of 5.
Is this your business?
Correct your details and reply to customers in public. Both are free.
Claim this listing40 approved reviews, newest moderated first
Benjamin P.
Excellent verified purity and quality of product at the best prices I have seen. Very helpful and responsive with questions.
JANICE D.
Fit aminos has been incredible. Shipping is super fast, the quality is amazing and the prices are very competitive. We won’t order from anywhere else
Bryan L.
Easy ordering process and great communications throughout.
Donna
Reliable service. Dependable products.
Zephon P.
ordered two Reta with a free bac water included. One 10mg and another 15mg. I used the 10mg and it was working great. There are no instructions so I contacted the Customer service rep and he told me how much bac water to use and what doses I need to get started as well as when I need to dose up. Started on 10mg and it worked great. Started losing weight and all was well. I went through my 10mg vial and was going to dose up when I started my 15mg. I did so. Mixed the bac water in and got started on the 15mg at a 30 unit dose. I expected some sort of side effects since I got those with the first but got nothing. I thought that was strange. Oh well. After a couple of days I noticed my hunger is back and I’m not losing at all. I’m gaining. I looked up if bac water needed to be refrigerated and it absolutely does. I reconstituted my 15mg with bac water I’ve had in a dark cabinet for a month now. This has made my 15mg vial ineffective. When I talked to the rep he didn’t tell me anything about keeping that refrigerated nor does it say to do so on my vial. I read some reviews of people saying some of vials were ineffective so maybe that’s the case, either way I’m going to do another dose and if this week goes the same, I’ll just look for a different supplier and trash the 15mg vial. I’m so disappointed. **Update** a doctor friend of mine is actually saying that I can’t use the 15mg vial because the bac water was compromised so I’ll have to throw it out. Smh. I did tell the guy on the phone I’d never done any of that. Just wish some clear instructions were somewhere. So disappointed.
JS
It’s been weeks and I haven’t received any indicator that it’s coming. I’ve written and asked for an update but nothing
Response from Fit AminosAug 18, 2026
Hi there, we're so sorry to hear about the trouble with your order — this isn't the experience we want for our customers. We'd love the chance to look into it and make things right for you. Please reach out to us at [email protected] and our team will take care of you. — The FitAminos Team
emma L.
If I could give this no stars I would! I ordered peptides and they did not work. Very disappointed. Don’t recommend.
Response from Fit AminosAug 18, 2026
Hi Emma, we're truly sorry to hear you're not happy with your experience — that's not what we want for our customers. We'd really appreciate the chance to learn more and make it right. Please contact us at [email protected] and our team will be glad to help. — The FitAminos Team
NICOLE R.
I did not receive any instructions. My friend who told me about fit amino. Told me what to do. Ensuring information. However, I received it within 5days of ordering.
Response from Fit AminosAug 18, 2026
Thank you for your feedback! We’re glad your order arrived quickly. Please note that our products are sold for research purposes, so we do not provide dosing protocols