From the other side of the consultation, briefly.

Regarding dosing arithmetic multi-dose vial contamination prevention: after reconstituting, I wipe the vial stopper with a fresh alcohol swab before EVERY single draw. I also never touch the stopper with my fingers and use a new needle for each draw.

Even with bacteriostatic water preservative, contamination is cumulative. One sloppy draw can introduce bacteria that multiply over days. Aseptic technique isn't optional — it's essential for injectable medications.

LipidDoc_ATL said:

Regarding dosing arithmetic multi-dose vial contamination prevention: after reconstituting, I wipe the vial stopper with a fresh alcohol swab before…

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.

LipidDoc_ATL said:

Regarding dosing arithmetic multi-dose vial contamination prevention: after reconstituting, I wipe the vial stopper with a fresh alcohol swab before…

Ongoing cost tracking for dosing arithmetic — transparency for the community:

Monthly medication cost: $136
Supplies (syringes, BAC water, alcohol swabs): ~$9/month
Janoshik testing: ~$11/month (amortized quarterly)
Lab work: ~$56/month (amortized quarterly)
Total: ~$186/month

Compare to brand Wegovy at $1276/month without insurance. Compounded is roughly 85% cheaper for what I have found to be clinically equivalent medication.

LipidDoc_ATL said:

Regarding dosing arithmetic multi-dose vial contamination prevention: after reconstituting, I wipe the vial stopper with a fresh alcohol swab before…

This answered a question I did not know how to ask. Printing the relevant bit and taking it with me.

Moderator note: leaving this open. It is being argued well and the disagreement is the useful part. Carry on.