GREAT experience overall. Shipping was quick, everything arrived on time and packaged well. The ordering process was easy, and customer service was responsive. The ppl running this business truly c... See more
Company replied
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Review summary
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After having tried a few different companies, Synthesis is truly in a league of its own. I was impressed by the responsiveness and product quality, but truly blown away by the shipping times. When I n... See more
Company replied
Synthesis Peptides has been great to deal with. Great prices and when I had a concern the owner called me to ensure I was educated and satisfied with the product. Great to deal with. Delivery is fast... See more
Synthesis is my absolute go to for my research peptides. Consistent quality, excellent shipping time and if I had any issues the customer support team and owner responded quickly and professionally. A... See more
Company details
Written by the company
Building Blocks for Breakthroughs.
Contact info
United States
- support@synthesispeptides.io
- synthesispeptides.io
4.8
Excellent
85 reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 100% of negative reviews
Typically replies within 24 hours
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Unmatched Quality and Support
Incredible selection and available inventory. High quality product with impressive COA’s. Customer support is unparalleled. This is my “go-to” company when I make a purchase.
27 May 2026
Quality products, & Great customer service
Easy ordering process & always discounts. Ive been utilizing there products for over the past 5-6months with great effects.
26 May 2026
Synthesis Peptides has been great to…
Synthesis Peptides has been great to deal with. Great prices and when I had a concern the owner called me to ensure I was educated and satisfied with the product. Great to deal with. Delivery is fast and ordering was effortless.
25 May 2026
GREAT experience overall
GREAT experience overall. Shipping was quick, everything arrived on time and packaged well. The ordering process was easy, and customer service was responsive. The ppl running this business truly care about their customers.
The quality has been great and everything matched what I expected. It’s nice finding a company that’s reliable and straightforward without overcomplicating things.
14 May 2026
Unprompted review
Reply from Synthesispeptides
Thank you! Really glad you had such a great overall experience with us. Appreciate you mentioning the quick shipping, good packaging, easy ordering process, and responsive customer service.
It means a lot that you can tell we truly care about our customers. Thanks for the kind words and for choosing us.
Looking forward to your next order!
Reply from Synthesispeptides
Thank you for taking the time out to leave us a review and thank you so much for trusting in us!
Reply from Synthesispeptides
Thank you!! We always try to be the standard!
Reply from Synthesispeptides
Thank you! We're here to make every transaction seamless!
Reply from Synthesispeptides
Thank you! We do our best to keep the standard!
Reply from Synthesispeptides
Thank you!!
Reply from Synthesispeptides
Thank you! We can't wait!
Reply from Synthesispeptides
Thank you! We're here to keep the standard!
Product arrived on time and was exactly…
Product arrived on time and was exactly what I ordered. They kept me updated on the shipping process and on a tracking number.
5 May 2026
Reply from Synthesispeptides
Thank you for taking out the time! We're looking forward to all our future business
Reply from Synthesispeptides
Thank you for taking the time!
Great guy answered all my questions and…
Great guy answered all my questions and spend a half hour on the phone with my mom answer her questions. Prices were great and speedy shipping. I would highly recommend!
1 April 2026
Unprompted review
Reply from Synthesispeptides
Thank you, Casey! We do our best to be the standard!
Great overall experience
Great communication, had all questions answered in good form. It’s nice seeing lab audits as well to ensure purity! Overall terrific experience. Will purchase again!
1 April 2026
Unprompted review
Reply from Synthesispeptides
Thank you!! We can't wait to have you back
Fair price and excellent quality
I was impressed by the speed of the delivery and the quality of the product. Fair price and excellent service.
4 May 2026
Unprompted review
Reply from Synthesispeptides
Thank you!! We're doing out absolute best
Excellent provider and servicer for all…
Excellent provider and servicer for all things peptides! Solid in knowledge and guidance. Affordable and fast delivery always!❤️
24 April 2026
Unprompted review
Reply from Synthesispeptides
Thank you so much for your kind review! We're really glad to hear you’re happy with our peptides, the storage guidance and other helpful information we provide, as well as our affordable pricing and fast delivery. ❤️
We truly appreciate you sharing your experience and look forward to serving you again soon!
Solid experience
I’ve been ordering from Synthesispeptides for a while now and have had a consistently good experience. Orders come quickly, shipping has been reliable, and everything lives up to my expectations. Their customer service has also been easy to deal with. Very responsive when needed and no issues.
4 May 2026
Unprompted review
Reply from Synthesispeptides
Thank you! Really glad to hear you've had such a smooth experience with us over time. Appreciate you mentioning the fast & reliable shipping, and that our customer service has been easy to work with. Means a lot!
Looking forward to your next order!
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