Jul 22, 2024 at 7:15 PM#1
Figured it's time to do a proper write-up since I've been ordering from QSC (Qingdao Sigma Chemical) consistently since last July. Five orders total, mix of tirzepatide and semaglutide. Here's the full breakdown:
Order 1 (July 2025): 4x tirz 30mg vials — shipped from China. Took 18 days door-to-door to East Coast US. Paid via BTC. Total $108 shipped.
Order 2 (Sept 2025): 6x tirz 30mg + 2x sema 5mg — China direct again. 21 days this time. $174.
Order 3 (Nov 2025): Switched to US warehouse. 5x tirz 30mg — arrived in 4 business days. Slightly higher price at $38/vial vs $27 from China.
Order 4 (Jan 2026): 8x tirz 30mg from US warehouse — 3 days to arrive. $296. Used Zelle this time.
Order 5 (Feb 2026): 4x tirz + 4x sema from US warehouse — 5 days. $248.
All vials arrived intact, vacuum sealed, cold pack on the US warehouse orders. Never had a customs issue with China direct but the wait was rough. US warehouse is a game-changer honestly.
Purity-wise I sent Order 3 to Janoshik and got 98.2% for tirz. Very happy with that.
Overall rating: 8.5/10 — only dings are the China shipping times and the fact that their website goes down periodically. Product quality has been rock solid. 💉
23 18pam_stl, wei_SG, cory_ATX and 20 others
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Jul 22, 2024 at 9:13 PM#2
Great write-up. Your experience mirrors mine pretty closely. I've done 3 orders all from US warehouse and never waited more than 5 days. The pricing from China is tempting but I just can't deal with 3-week waits.
One question — did you notice any difference in the powder appearance between your China-direct vials and the US warehouse ones? My last US warehouse batch had a slightly more "fluffy" lyophilized cake compared to earlier orders.
Last edited: Jul 22, 2024 at 11:13 PM
22 17PharmD_Rodriguez, julia.endo, JessicaM_2024 and 19 others
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Jul 22, 2024 at 11:11 PM#3
Good question. Yes actually — the China direct vials had a more compact puck at the bottom, almost like a dense tablet. The US warehouse ones were fluffier/more fragile looking, crumbled easier during reconstitution. Both dissolved perfectly clear though. I think it might just be batch variation in the lyo process. Purity tested the same so I wouldn't read too much into it.
Last edited: Jul 23, 2024 at 12:11 AM
21 16TirzTom, TrialTracker_MD, JennaRN and 18 others
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View ResultsJul 23, 2024 at 1:09 AM#4
Appreciate the detail here. I'm about to pull the trigger on my first QSC order. Few questions:
1. How's their communication? I've heard mixed things about response times.
2. Did you ever have a vial that looked "off" — discolored solution after reconstitution, floaters, etc.?
3. The Zelle option — did they send you a direct contact or is it through an intermediary?
Thanks 🙏
Last edited: Jul 23, 2024 at 4:09 AM
20 15sophie_paris, mel_PDX, Dr.AddMedPHL and 17 others
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Jul 23, 2024 at 12:46 PM#5
1. Communication is... functional. Tracy (their main CS rep) responds within 24 hours usually but sometimes it's clearly copy-paste answers. If you have a real issue you need to be persistent. I'd rate comms 6/10.
2. Never had a discolored vial. All reconstituted crystal clear. One vial from Order 2 had lost vacuum (cap depressed when I pushed the needle in without resistance) but the powder looked fine and I used it anyway with no issues.
3. Zelle goes to what appears to be a personal account name. Won't share details publicly but it's straightforward. They also take BTC, ETH, and cashapp now I believe.
19 14JennaRN, LabKate, kate.chem and 16 others
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