Tuesday, November 3, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
120 reviews
Sigma CompoundsSelect a line to read only those reviews.
Honesty, pricing, process and quality scores appear once 5 customers have rated them.
Sigma Compounds stands at the forefront of the research peptide industry, offering premium peptides. We have established strong partnerships with manufacturers who ISO 9001:2008 standards, allowing us to offer our clients exceptional pricing without compromising on quality or purity. Our commitment to delivering top-notch products ensures that we remain a reliable resource for the scientific community, and we are delighted to share these savings with our valued customers
Sigma Compounds (sigmacompounds.com) has 120 customer reviews on The Fair Hearing, with an average rating of 4.9 out of 5.
120 approved reviews, newest moderated first
This is a solid company with excellent customer service and timely fulfillment and delivery of hard to find products. Here in the US and has a simple, transparent process that gives you peace of mind when ordering.
By Greg P.
Solid selection, quick shipping and customer service is top notch. Had an order issue and they corrected it with in a day. Didn’t have to run through a bunch of automated messages just to get put to the back of the line. Email was smooth and seamless. Great company
By John G.
This company is fantastic! Easy payment process, excellent customer service, and the lab tests are obviously one of the best out there.
By Jgman
Great company their education books are great help. I appreciate the knowledge they help get out there.
By Kera E.
I sent a message to support with a slight concern and some questions. They jumped right on it. Not only did they go back & forth with me, but I had a follow up call from the owner (CEO?) to ensure I was clear. The products are great, the service is outstanding. They know how to treat their customers.
By JMac
After purchasing from numerous vendors, Sigma Compounds stands head and shoulders above the rest.
By Juan R.
Great value for great quality products
By customer
Im fairly new to the Peptide market, Sigma being my third vender. Im impressed with the shipping and customer service! Packaging is Plautium level!!! I purchased the 10/10 Bp157/ TB500 nasel spray and could not be happier. Im reading Sigma recommend books and they are educational and easy to follow! Looking forward to doing business in the future.
By Mel B.
