QSC (Qingdao Sigma Chemical)
Chinese direct manufacturer and the largest peptide supplier discussed in bodybuilding and research forums. Operates domestic warehouses in the US, EU, Canada, and Australia for faster delivery. Known for extremely competitive pricing but controversial community presence including forum bans and doxxing incidents.
Score Breakdown
Weighted scoring: COA Quality (20%), Transparency (15%), Community Reputation (15%), Product Range (10%), Pricing (10%), Shipping Speed (10%), Website Experience (10%), Payment Flexibility (10%)
Pros & Cons
Pros
- Lowest prices in the market
- Massive product range
- Domestic warehouses in 4+ countries
- Direct manufacturer
Cons
- Crypto/wire only payment
- History of doxxing forum members
- Banned from MESO-Rx multiple times
- No proper website checkout
- Inconsistent customer service
- Quality concerns with some batches
Product Catalog
| Peptide | Amount | Price | In Stock | |
|---|---|---|---|---|
QSC 5-Amino-1MQ 10mg | 10-Vial Kit | 100mg total | NNMT Inhibitor 10mg $200.00 Yes | ||||
QSC 5-Amino-1MQ 50mg | 10-Vial Kit | 500mg total | NNMT Inhibitor 50mg $260.00 Yes | ||||
QSC 5-Amino-1MQ 60mg Tablets | 1000-Count | 60000mg total | NNMT Inhibitor 60mg $1080.00 Yes | ||||
QSC ADAMAX 10mg | 10-Vial Kit | 100mg total | Metabolic Modulation 10mg $320.00 Yes | ||||
QSC ADAMAX 10mg | 20-Vial Kit | 200mg total | Metabolic Modulation 10mg $510.00 Yes | ||||
QSC Adipotide 10mg | 10-Vial Kit | 100mg total | Proapoptotic Adipose 10mg $290.00 Yes | ||||
QSC Adipotide 10mg | 20-Vial Kit | 200mg total | Proapoptotic Adipose 10mg $460.00 Yes | ||||
QSC AHK-Cu 100mg | 10-Vial Kit | 1000mg total | Copper-Binding Regenerative Peptide 100mg $200.00 Yes | ||||
QSC AOD-9604 10mg | 10-Vial Kit | 100mg total | HGH Fragment 10mg $320.00 Yes | ||||
QSC AOD-9604 10mg | 20-Vial Kit | 200mg total | HGH Fragment 10mg $510.00 Yes | ||||
QSC AOD-9604 5mg | 10-Vial Kit | 50mg total | HGH Fragment 5mg $200.00 Yes | ||||
QSC AOD-9604 5mg | 20-Vial Kit | 100mg total | HGH Fragment 5mg $320.00 Yes | ||||
QSC BPC-157 10mg | 10-Vial Kit | 100mg total | Gastric Pentadecapeptide 10mg $200.00 Yes | ||||
QSC BPC-157 10mg | 20-Vial Kit | 200mg total | Gastric Pentadecapeptide 10mg $290.00 Yes | ||||
QSC BPC-157 20mg | 10-Vial Kit | 200mg total | Gastric Pentadecapeptide 20mg $220.00 Yes | ||||
QSC BPC-157 20mg | 20-Vial Kit | 400mg total | Gastric Pentadecapeptide 20mg $350.00 Yes | ||||
QSC BPC-157 40mg | 10-Vial Kit | 400mg total | Gastric Pentadecapeptide 40mg $290.00 Yes | ||||
QSC Cagrilintide 10mg | 10-Vial Kit | 100mg total | Appetite Regulation 10mg $290.00 Yes | ||||
Certificate of Analysis (COA)
Some Janoshik third-party testing available. Concerns about cherry-picking favorable test results. Not all products have COAs.
Shipping Information
Shipping Information
Payment Methods
Crypto and wire transfer only. No credit card or PayPal options available. No proper website checkout system.
Peptides Available
Quick Facts
- Type
- Chinese Direct
- Location
- Qingdao City, Shandong Province, China
- Founded
- 2008
- Website
- qsc-usa.com
- Last Verified
- 2026-02-09
- Overall Score
- 5.7
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Peptides (28)
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