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
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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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Top quality product 💯 very trusted fast…
Top quality product 💯 very trusted fast shipping customer service is fast at resolving issues!!
26 June 2026
Top teir peptides!
Id like too give a shout out to these guys From Texas! There have been a few hiccups. in my four month Journey with this great company. But they have allways went above and beyond too correct.it and make it better. That being said. There peptides have allways been amazing. Can send pics of my life changing transformation. Thank you for adding life to my years!!!
1 July 2026
Unprompted review
Great Experience from beginning to end
Great Experience from beginning to end! Website is super easy to navigate and their customer service is top notch! Have, and will continue to recommend this company to friends and family!
Thanks again!
-Daniel
23 June 2026
Unprompted review
Quality of the product was comparable…
Quality of the product was comparable to what I was paying for at my doctor's office and customer service was outstanding.
5 June 2026
Unprompted review
synthesis peptides is my favorite…
synthesis peptides is my favorite source of peptides. they have fast shipping and very clean legit peptides. my parents, friends and family use them as well
30 May 2026
So far amazing!
29 May 2026
Quality products and fast shipping
Quality products and fast shipping
Synthesis is great to do business with
I will order again with zero hesitation !
1 June 2026
Customer Service
I relayed my disappointment about the delayed shipping I encountered and it was reimbursed immediately. Customer service was great.
1 June 2026
Great as always
31 May 2026
Always great quality and service
Always great quality and service. The best peptide company out there.
30 May 2026
Dis shit fo reserch
Great communication and commitment to the sale all the way through to the end. Also great customer service. Plus the quality is awesome and the product is great.
29 May 2026
Repeat customer
I have purchased from synthesis peptides multiple times now, and am happy with the products I have received from them! Always in a timely manner too. I
29 May 2026
I was impressed by the quickness of the…
I was impressed by the quickness of the delivery and the quality of the product. fair price and excellent servicem
1 June 2026
Unprompted review
Great peptides
Great peptides! I take a whole stack for workout and healing purposes. But, I’m currently healing from breast augmentation, and Doc mentioned how fast my scars are healing. Told her I was taking BPC-157 and TB-500. I usually take Glow, but I wanted individual vials for this surgery recovery. I’m 3 weeks post op, and she said my scars look like they’re 7 weeks post op.
27 May 2026
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