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Bacteriostatic water sourcing guide — need advice

tampaLisa73 Tue, Dec 17, 2024 at 12:01 AM 34 replies 1,822 viewsPage 7 of 7
BethLabQueen
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Mar 19, 2025 at 7:16 AM#31
DeniseRN_TPA said:
Sharing my dosing arithmetic titration experience with compounded semaglutide — I have been tracking injection volumes meticulously: Using 5mg/2mL…

For anyone reconstituting dosing arithmetic peptides: the water-to-powder ratio determines your concentration. Here's my reference:

Vial SizeBAC WaterConcentration0.25mg Dose
5mg2mL2.5mg/mL10 units
5mg2.5mL2mg/mL12.5 units
10mg2mL5mg/mL5 units
10mg3mL3.33mg/mL7.5 units

More water = easier to measure small doses but vial runs out faster. Find the balance that works for your dose.

37 10maya_sedona, stefan_berlin, Dr.EM_Chicago and 34 others
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carlos_SATX
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Mar 26, 2025 at 2:31 PM#32

Following on from DeniseRN_TPA — and this may be the naive question:

Did your prescriber agree with that reading, and if not what was their objection?

Last edited: Mar 26, 2025 at 4:31 PM
38 11FranDenver, Dr.BariatricHTX, LindaRN_retired and 35 others
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paul_denver
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Apr 2, 2025 at 9:50 PM#33
BethLabQueen said:
For anyone reconstituting dosing arithmetic peptides: the water-to-powder ratio determines your concentration.

dosing arithmetic — critical reminder about tirzepatide dose equivalence across formulations:

Mounjaro KwikPen and compounded tirzepatide are the same molecule but:

  • KwikPen is ready to inject, no mixing needed
  • Compounded requires reconstitution and proper syringe technique
  • Verify your compounded concentration before each injection
  • Never assume 1 vial = 1 dose without checking the math
Last edited: Apr 3, 2025 at 3:50 AM
39 12wendy_avl, jason_paloalto, Dr.LeslieOBGYN and 36 others
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Janoshik Analytical — Independent Testing

Trusted third-party HPLC & mass spectrometry analysis. Verify peptide purity with the lab the community relies on. Independent. Accurate. Transparent.

Verify Your Peptides

GL Biochem (Shanghai) Ltd. — Direct Manufacturer

Est. 1998. The synthesis house behind the vials you send for testing. ISO 9001 and cGMP certified, 1,500+ staff, batch-specific COA with every order.

Browse GL Biochem
claudia_zurich
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Apr 10, 2025 at 5:13 AM#34
BethLabQueen said:
For anyone reconstituting dosing arithmetic peptides: the water-to-powder ratio determines your concentration.

Reconstitution tip for anyone mixing dosing arithmetic from lyophilized powder: use bacteriostatic water, NOT sterile water. The benzyl alcohol in BAC water preserves multi-dose vials for up to 28 days.

Inject the water slowly down the side of the vial. NEVER shake — gentle swirling only until fully dissolved. Should be crystal clear with no particles.

Last edited: Apr 10, 2025 at 11:13 AM
40 13alex_tucson, kevin_tulsa, Dr.PainCLE and 37 others
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WendyG_ATL
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Apr 17, 2025 at 12:41 PM#35
BethLabQueen said:
For anyone reconstituting dosing arithmetic peptides: the water-to-powder ratio determines your concentration.

This is exactly what I could not find anywhere else. Printing the relevant bit and taking it with me.

41 14DebRD_ATL, KristenIndy, MarkLI_maint and 38 others
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