I've had a great experience with Certified Peptide. I've now had several purchases, and any time I have any question about products, handling, research etc. there is always a live person in the chat to talk me through my questions. I am a stickler for quality , I fully researched the lab they used before purchasing, The quality has been excellent with each purchase. Im not a vendor hopper so I am happy to say they have won my trust and will continue to be my go to Vendor.