Certified Peptides reviews

Most reviewers praise the store’s customer service, product quality, and quick shipping. Some report delayed or lost deliveries, poor responses to delivery problems, or concerns about product condition and packaging. Buyers also mention easy ordering, fair prices, and testing documentation.

What buyers mention most

• Shipping

  Many reviewers describe shipping as fast, prompt, or on time. Others report delays, lost parcels, or extra shipping costs.

  See 36 reviews about Shipping

• Customer service

  Many reviewers praise helpful, responsive service. One reviewer says the store did not respond to reports of lost or damaged packages.

  See 36 reviews about Customer service

• Product quality

  Many reviewers describe products as high quality. One reviewer reports poor purity and concentration, and another says products arrived dried and brittle.

  See 41 reviews about Product quality

• Ordering

  Reviewers describe ordering as easy and the transaction process as simple. One reviewer notes that products were rarely out of stock.

  See 8 reviews about Ordering

• Packaging

  Some reviewers praise careful or secure packaging. Others describe loose vials in an envelope, a cap arriving open, or labels covering the vial.

  See 10 reviews about Packaging

Reviews behind this summary

• Thomas C.

  Verified purchase

  Nov 5, 2026

  Great company with quick shipping

  Cert peps is such a great company. They really look out for their customers. They get the products out to you quickly too.

• Mitch

  Verified purchase

  Aug 21, 2026

  Good selection, mediocre packaging

  Pros: 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.

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• AARON B.

  Verified purchase

  Aug 13, 2026

  Customer service went above and beyond

  I had a stolen order worth more than $800. The company was VERY generous and sent me a make up order 10 days later. WHERE ELSE DOES CUSTOMER SERVICE LIKE THAT EXIST THESE DAYS? I'm a customer for life. 24 hour customer support, a wide range of quality research compounds & quick turn around times also helped earn my continued business as well. HAVE FedEx hold your package at a local storefront.

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