Shipping
Many reviewers describe shipping as fast, prompt, or on time. Others report delays, lost parcels, or extra shipping costs.
See 35 reviews about Shipping
Written by AI from the 150 most recent reviews
Most reviewers who left comments praise customer service, product quality, and fast delivery. Some report delayed or lost parcels, poor responses to shipping problems, or concerns about packaging and product condition. Buyers also mention easy ordering, fair prices, and testing documentation.
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Many reviewers describe shipping as fast, prompt, or on time. Others report delays, lost parcels, or extra shipping costs.
See 35 reviews about ShippingMany buyers praise helpful, responsive service. One reviewer says the company did not respond to reports of lost or damaged parcels.
See 35 reviews about Customer serviceMany reviewers praise product quality. Others report low purity or concentration, or products arriving dried and brittle.
See 40 reviews about Product qualityReviewers describe ordering as easy and the transaction process as simple. One buyer reports receiving the wrong product, which customer service corrected promptly.
See 11 reviews about OrderingSome buyers praise careful or professional packaging. One reviewer calls the shipping packaging mediocre, and another reports an open cap on an order.
See 8 reviews about PackagingHart J.
Verified purchaseThey don’t respond when packages are lost or products are damaged. It’s a numbers game.
Mitch
Verified purchasePros: Fair pricing (with discount code), good selection of products, COA's included testing for endotoxins and heavy metals (not all suppliers go this far with their COAs), easy to order and pay online, shipping speed was ok. Only con: Shipping packaging in my opinion was mediocre -loose vials in a shipping style envelope (could have broken easily with carrier mishandling) and no real temperature control measures.
Kevin
Verified purchaseI've got several research compounds such as RC-01, tesa, and nad+. They have all been great, and their customer service is awesome. I did receive the wrong research compound once, and hopped on a chat with customer service, and they got me the correct one in the mail right away. Their prices are awesome too compared to the other companies out there, some of which are subscription based.
Engineered for elite research, our products combine pharmaceutical-grade quality, with rigorous independent testing!
2,780 published reviews
Showing 1–10 of 2,780 reviews
Michael W.
Verified purchaseMarc F.
Verified purchaseLaura B.
Verified purchaseJoyce W.
Verified purchaseVery satisfied with this supplier. Shipping is always efficient. Will continue to purchase research compounds for research use only.
Linda Z.
Verified purchaseI missed the discount over the weekend. I’ll watch for next one, hopefully coming soon.
Amy B.
Verified purchaseRonald F.
Verified purchaseAaron R.
Verified purchaseEddie L.
Verified purchaseStephen S.
Verified purchaseThe best Peptide company I’ve ever dealt with. 5 stars for sure.

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2,780 published reviews
great prices and fast shipping but the best part is customer service! Great people that really seem to care.
Jack M.
Verified purchaseBrittiany
Verified purchaseSAMMY
Verified purchaseCustomer service has been spot on...Quick to answer my questions.
Heather
Verified purchaseCynthia
Verified purchaseI have ordered from Certified Pep close to half a dozen times; I have never had a bad experience or received a product I was unhappy with. The staff is always available to answer questions. I chose Certified Pep because of the personal communication when placing my first order. If you’re thinking about ordering, just do it.
Koen
Verified purchaseGood communication, friendly people, quick shipping
james
Verified purchaseJason
Verified purchaseBest company ever lol
Richie W.
Verified purchaseI’ve ordered from Certified-PEP multiple times and have been consistently impressed with how professional the operation is. Orders ship quickly, packaging is secure, and documentation is clear and easy to verify. Communication has been solid whenever I’ve had a question, and the overall experience has been reliable from checkout through delivery. I appreciate the transparency and attention to detail compared to other suppliers I’ve used.