Certified Peptides reviews

Many reviewers praise customer service, product quality, and fast shipping. Some report delayed or lost deliveries, poor packaging, or product quality concerns. Buyers also mention easy ordering, fair prices, and testing documentation.

What buyers mention most

• Shipping

  Many buyers describe shipping as fast and on time. Others report delays or lost parcels, and one reviewer says the company did not notify them about a possible delay.

  See 32 reviews about Shipping

• Customer service

  Many reviewers praise helpful, responsive service. One buyer says the company did not respond about lost or damaged parcels.

  See 36 reviews about Customer service

• Quality

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

  See 40 reviews about Quality

• Ordering

  Some reviewers describe ordering as easy and the transaction as simple. One buyer notes that ordering from separate retailers added shipping cost.

  See 10 reviews about Ordering

• Packaging

  Some buyers 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

• Reid B.

  Verified purchase

  Aug 12, 2026

  Excellent service and reliable delivery

  Certified Peptides has been excellent. Great customer service, reliable on-time delivery, and consistently top-notch product quality. Every order has been smooth and professional from start to finish. Definitely a company I trust and highly recommend!

• Diana K.

  Verified purchase

  Aug 13, 2026

  Great service and carefully packed orders

  Never disappoints! As far as I’m concerned this company is totally on top of their game! Their research compounds are perfection every time, packed with care and accuracy. Their customer service is great with real people answering the phone every time I’ve called. No one else does that! Love Certified peptides! Thank you so much!

  Read more

• Brenda H.

  Verified purchase

  Aug 13, 2026

  FedEx delivery took longer than expected

  I placed my order on 8/2/2026, received confirmation of order complete with FED EX tracking # on 8/4/2026. The FedEx - One Rate (3-4 days usually) didn't deliver until 8/11/2026 at 3:03pm. While waiting for my delivery I contacted Customer Support and was told that the wild fires on the west coast may have impacted their routes but never received a notice from the company. that there may be a delay. When you pay FedEx shipping charges you expect 2-4 day max delivery, I thought that's why you use FedEx.

  Read more