Certified Peptides reviews

Buyers often praise customer service, quick shipping, easy ordering, and product quality. Reviews differ on product quality and packaging, with some complaints about a tested product, damaged arrival, and parcels delayed or mishandled. Buyers also mention fair prices and helpful testing documentation.

What buyers mention most

• Customer service

  Many buyers praise helpful, professional support and quick responses. One reviewer says the listed customer service email was undeliverable.

  See 37 reviews about Customer service

• Shipping

  Many buyers report fast or on-time delivery. Others describe delayed parcels, carrier problems, or extra shipping costs.

  See 39 reviews about Shipping

• Ordering

  Buyers often describe ordering and checkout as easy, with some noting quick order processing. One reviewer reports confusion over applying a discount.

  See 16 reviews about Ordering

• Product quality

  Many buyers praise product quality. Reviews differ: one buyer reports a poor test result, and another describes a product arriving dried and brittle.

  See 36 reviews about Product quality

• Packaging and COAs

  Some buyers praise careful or secure packaging, while others criticize loose packaging or a cap arriving open. Buyers also mention COAs and batch testing.

  See 11 reviews about Packaging and COAs

Reviews behind this summary

• Michael O.

  Verified purchase

  Nov 5, 2026

  Great products and fast delivery

  Great products, great customer service and fast delivery.

• 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