Certified Peptides reviews

Most reviewers praise customer service, product quality, and fast shipping. Some report damaged or delayed parcels, poor packaging, or problems getting help or a replacement. Reviewers also mention easy ordering, fair prices, and testing documentation.

What buyers mention most

• Shipping

  Many reviewers describe shipping as fast and deliveries as on time. Others report delays, lost parcels, or unresolved carrier problems.

  See 31 reviews about Shipping

• Customer service

  Many reviewers praise helpful, responsive service. Some report no response about lost or damaged parcels, no replacement offer, or an undeliverable support email.

  See 39 reviews about Customer service

• Quality

  Many reviewers praise product quality, and some mention testing standards or COAs. Others report low purity or a product arriving dried and brittle.

  See 35 reviews about Quality

• Ordering

  Reviewers describe ordering and checkout as easy. One reviewer reports receiving the wrong product, which customer service corrected promptly.

  See 14 reviews about Ordering

• Pricing

  Some reviewers praise fair prices, discounts, and sale prices. One reviewer was disappointed by an additional shipping cost.

  See 12 reviews about Pricing

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.

  Read more

• 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.

  Read more