Kimberly De Los R.
Everything is amazing
Everything is amazing! I love that if I have questions, Michael is quick to answer. He is always so helpful and I especially like how honest he is.

Peak Performance Peptides supplies high-purity research peptides and laboratory consumables for scientific, academic, and industrial research. We focus on reliable quality, transparent batch documentation, and fast U.S. shipping. Our catalog is designed for laboratory professionals seeking consistent research-grade materials, not for human use.
Peak Performance Peptides (peak-performancepeptides.com) has 32 customer reviews on Five Star Index, with an average rating of 4.9 out of 5.
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Kimberly De Los R.
Everything is amazing! I love that if I have questions, Michael is quick to answer. He is always so helpful and I especially like how honest he is.
Wyld R.
Piss poor , unable to contact firing business hours, billing is erroneous with over charges the norm
Response from Peak Performance PeptidesSep 12, 2026
This is a pretty serious statement to make, especially considering you have never placed an order with me. Would you mind providing some proof or details showing that you actually ordered from my business? I would really appreciate the opportunity to verify this before a negative review is left on my page. Based on what I can see, I believe you may have the wrong business. If that’s the case, I kindly ask that you remove the review from my page and post it on the correct business’s page instead. I completely understand being frustrated with a company when there is a genuine issue, but I’d hate to have my business negatively impacted by a review that may have been intended for someone else. Thank you for understanding. Edit: Surprise, surprise. Still no proof of ever placing an order or being a legitimate customer. At this point, it’s pretty clear you have the wrong business. I’d appreciate it if you would remove your review and post it on the correct company’s page. Trying to sound intelligent but lacks the capability to form a complete sentence...sad
Richard P.
I promise you, you won’t regret ordering from this company. This was my first and only supply line and it has been safe, reliable, affordable, knowledgeable and super easy to work with. I’ll never buy from another supplier. Thank you Peak Performance
Customer
Super fast and reliable delivery, great rewards program, and multiple ways to pay. The product is great quality and shows amazing results.
Response from Peak Performance PeptidesSep 6, 2026
Thank you so much for the review Kelly! I really appreciate your support.
Shannon S.
Awesome company! Have already reordered from them! Hope they keep adding more options!!
Response from Peak Performance PeptidesSep 5, 2026
Thank you so much for the review, Shannon! I really appreciate it! I’m always working on expanding the inventory. I have six new products being sent out for testing this week, and I’m looking to add another 2–4 products by the end of October. If there are any specific products you’re interested in researching, feel free to send me an email through the Contact tab on the website. I’m always open to suggestions, and if it’s something I think there will be enough demand for, I’ll definitely consider bringing it in! Mike
ER
Had a question and it was answered in lightning speed. Ordering was super easy and delivery was just as fast as my question was answered. Ordered PP-TRZ & BAC Water and I’m all set to start my research *wink,wink* later on tonight. Fingers crossed I get the results I so greatly desire! And if I do, you’ll have the most loyal customer. Wish me luck! 🤞🏼
Response from Peak Performance PeptidesSep 6, 2026
Thank you so much Erica. I hope that is correct. I believe it is anyways. Took me a minute to figure it out but I am glad I was able to answer your question quickly. I have email notifications set up on my phone to get back to everyone as soon as possible. If you need any other assistance you know how to get ahold of me and I am glad to help in any way that I can. Good luck and thank you again!
Caroline L.
Reliable, effective product for a good price, and super fast shipping! Will only be buying from here.
Response from Peak Performance PeptidesSep 6, 2026
Thank you so much for the kind words and taking the time to leave a review. I am glad you took a chance on me and it means a lot. Thanks again Caroline!
Jessie G.
I have had the honor of buying from this seller in multiple occasions and they have always been super honest and reliable. I will continue to buy from them. Excellent customer service and quick delivery.
Response from Peak Performance PeptidesSep 6, 2026
Jessie! Thank you so much for the review. I know you were one of the first of my customers to take a chance and purchase from me and that means so much to me.