Certified Peptides 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.

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 35 reviews about Shipping

• Customer service

  Many 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 service

• Product quality

  Many reviewers praise product quality. Others report low purity or concentration, or products arriving dried and brittle.

  See 40 reviews about Product quality

• Ordering

  Reviewers 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 Ordering

• Packaging

  Some 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 Packaging

Reviews behind this summary

• Hart J.

  Verified purchase

  Nov 5, 2026

  No response to lost or damaged packages

  They don’t respond when packages are lost or products are damaged. It’s a numbers game.

• 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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• Kevin

  Verified purchase

  Aug 12, 2026

  Great service and prices

  I'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.

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