“Wonderful company to work with. I have been ordering their peptides for about 6 months. Quality is great the shipping is quick and the team and Cert Pep is amazing.”
“This has been the best experience! The team is fast, responsive and helpful at all times. I love the products as they work so well. I also appreciate all the updates and discounts you run. Keep it up!”
“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!”
“The products you offer..and your shipping was Fast!! But most of all ...the customer service ..outstanding ! Definitely will make more purchases...absolutely recommend this company !!”
“The order process was quick and efficient despite the holidays and bad weather. Ordered on 12/19, shipped on the 20th, delivered on the 24th. Products were in good shape. Research underway, will update on results when complete Update: 1/16/26: research is going very well, products are working as expected, actually better than anticipated”
“They have the COAs online for each peptid. They also have a chat feature on the website and were very responsive in answering any of my questions. My order came in the time frame stated and arrived undamaged .”
“My products came in a timely manner, and the videos/instructions were easy to follow. I’ve only been on the product for a couple of weeks, and I’m hoping to see some good results soon.”
“Jason and the whole team are amazing to work with. They are so knowledgeable and quick to respond. If there’s ever an issue they are quick to resolve it. Their products are amazing as well. Absolutely the best company!”
“The peptides speak for themselves. I’ve had great results with all of the peptides I’ve taken. The companies customers service is informative and professional. They’re the only company I trust when purchasing peptides”
