Certified Reviews

Week later still haven't received peptides.However i immediately received txt from company addressing issue after posting which is impressive. I ll give them a chsnce .

Certified Peptides are amazing. Their customer service cannot be beat!!! The are very quick to respond and are always extremely helpful. Their products are truly the best and the prices can’t be beat either!

Certified Peptides is by far the best option for peptides. Great products, great prices and great customer service.

I was at first disappointed with my order due to not getting my discount with the code and waiting on my order but Jason the owner reached out to me and explained about putting in the code for the discount and making sure I hit apply and also explained for the slight delay on my order due to the terrible weather conditions. I have to say I think alot of a company when they take the time to pursue a customers satisfaction. Jason was very polite and is going to apply my discount to my order! I have to say can't wait to try the products and if is as good as the customer service iam sure I will be pleased!!

Great company ! when product goes out of stock. And it does, it gets restocked quickly. And orders gets shipped very quickly!! Very satisfied with my experiences...

The products are consistently high quality and ship via priority mail. I have placed multiple orders with this company, and each experience has been marked by reliable quality, prompt delivery, and exceptional attention to detail. Every shipment includes multiple business cards for different team members, clearly demonstrating a well-organized support structure and a genuine willingness to assist customers. On one occasion, my order arrived incomplete. I initially sent an email and did not receive a response; however, after calling one of the contact numbers provided in my original package a few days later, I was immediately connected to the appropriate representative. The issue was clearly explained and promptly resolved. While occasional issues can occur with any business, the professionalism and thoroughness with which this matter was handled exceeded expectations. Thank you for consistently providing quality products and excellent customer service.

Everything is what it says and showed up in a timely fashion either the day shown or if weather stops if right there after. Appreciate the entire staff especially for being great on customer service. Thank you!

I used Peptide Science for years and hands down you guys are absolutely superior. Your peptides are top quality,support is excellent and customer appreciation is well noted. And best of all the difference in price! The delivery time is great. Thanks to all and especially the CEO Jason for a great company!

I love this company, over the past five months, i've placed several orders. the customer service is fantastic.There's a real person in the chat that answers immediately, and for more, in depth, conversations.I've actually had people at this company pick the phone up and call me for clarity on my questions. The products are consistently excellent and the shipping is always fast with no issues whatsoever. there's a lot of companies out there in the peptide space, and this is the only company I refer people too.

Had a problem with customer service and Jason immediately called and took care of the situation. I highly recommend using this company.

Great selection of High Quality Peptides. The prices are good and the shipping is fast.

Excellent products, customer service, fast shipping, and easy to navigate and order from the website

Great customer service- actual humans that quickly answer any and all questions. Quick and knowledgeable- just starting my regimen but no problems yet and they were super helpful once I received my peptide!

I switched to this company because of bad service with another company and I"m so glad I did! The best customer service ever! I'm not paid to write this,this is a real customer that is very glad I found them!

Thank you guys for a great product, excellent costumer service and efficient shipping processes. I would and will recommend Certified Peptides to anyone interested in optimizing their existence.

Absolutely the best place to get your research items from. I will not buy from anyone else. Top quality, fast shipping and great customer service. Truly the best place.

Very happy with Certified-pep so far.. I’ve placed two orders and I’ve had an excellent experience with ordering, delivery speed, as well as getting questions answers quickly by text! Great customer service!!

I'm 3 weeks in using BPC-157, so far I'm seeing no benifit at all. I ordered more 8 days ago, It's still not here yet. The researchdosing website give conflicting information and sometimes missing information. Look at the info on BPC-157 and TB 500 combo, it cuts off mid sentence.

I am very satisfied with this company so far. I have received every order on time, always within the few days stated in advance, and without any delivery issues. Communication has been clear and reliable. Although I have only been "testing" their peptides for a short time, my experience has been so far positive and it is fulfilling all my expectations. Based on my experience so far, I would recommend this company to anyone looking for a reliable supplier. Customer service is good, and I regularly receive information about discount sales and special offers, which I appreacite as I usually make orders well over 1K. Pricing is reasonable, with additional discounts available for higher quantities, which I appreciate. My only concern is that the product purity and testing are genuine and honest. If this is the case, then the company is clearly doing a good job and is on the right path toward a profitable business with a growing number of satisfied customers. I have chosen Certified peptides as my supplier of peptides, because 1) they have good pricing ( I checked dozens of suppliers to get a good idea what is the price of each available peptide on the market) and 2) purity of their products belongs to the highest on the market, 99% is absolute minimum for me, 98% is not good enough :) and for me it is critical that they test also for endotoxins, heavy metals and sterility. Not all suppliers test it. I would welcome if they also test for microbilogical contamination (TAMC, TYMC, specific pathogens) and residual solvents, but frankly not sure if anyone on the market does it. This would definitely distinguish them from all others!

I have only just started my peptide journey and was referred to Certified Peptide through a review site. I am so glad that I went that route. I have had only good experience with this company. Fast shipping, easy payments, and clear COAs. The peptide world is overwhelming at first but Certified Peptides provides guidance with every purchase. I'll keep buying from them!

Certified Pep is one of the best companies for your research needs ! Our findings have been outstanding! Customer service is always available with any and all questions. I definitely recommend!

easy to order easy to pay for arrived on time

Hi Jason, I’d like to share some honest and constructive feedback with the intention of helping your company continue to improve. I’ve recently started using your peptides, and overall I appreciate the opportunity to work with your products. That said, I’ve noticed a few issues I wanted to bring to your attention: Some of the labels are larger than the vials, and a few are not well adhered. During shipping, the labels can shift or peel, which makes the product appear less professional and not as new. Shipping times have been longer than expected. The vial caps are extremely difficult to remove when preparing the product. In some cases, I’ve had to use tools like forceps to open them, which is not ideal—especially when preparing medication in front of patients. I’ve also noticed that the NAD+ vials appear wet inside. I’ve ordered NAD from other companies before and have not seen this, so it raised some concerns for me. Additionally, I recommended your company to a colleague, and unfortunately their package appears to have been lost. I’m sharing this feedback transparently and respectfully, with the genuine intention of helping improve the overall experience and presentation of your products. Thank you for the opportunity to provide this input, and I hope it’s helpful. Best regards, Dr. Maria Quiroz

Great quality peptides! I use NAD+, Tirzapetide, Semax, Selank, Sermorelin, BPC 157/TB 500, etc. Shipped quickly and securely! They even sent me little containers to store them in! The best company for peptides that I've ordered from!!

Great company. Great product