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Evidence-based GLP-1 & peptide discussion since 2023
ForumsDosing & ProtocolsDrawing from a multi-dose vial — anyone have experience?

Drawing from a multi-dose vial — anyone have experience?

raj_cambridge Mon, Jul 22, 2024 at 5:12 AM 59 replies 2,635 viewsPage 1 of 12
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raj_cambridge
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Jul 22, 2024 at 5:12 AM#1

Four dose steps in, holding each one the full four weeks, and I am trying to work out whether the interval is a pharmacological requirement or a tolerability convention.

What I am after is why the interval is four weeks rather than two, and whether a slower ladder gets to the same place.

I would rather have one careful answer than five confident ones.

50 20SleepFixSam, PurityPaulOR, MaxMetOK and 47 others
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MikeFit_NJ
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Jul 22, 2024 at 5:25 AM#2

Taking the question as asked, rather than the general version of it. Holding longer is the underrated move. A step that is uncomfortable at week two is frequently comfortable at week six with no change in dose, because the gastric-emptying component tachyphylaxes while the appetite effect persists. Escalating at week two throws that adaptation away.

Last edited: Jul 22, 2024 at 8:25 AM
49 19marcus_mpls, DeniseRN_TPA, SandraNC_45 and 46 others
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KevinCompounds
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Jul 22, 2024 at 5:38 AM#3
MikeFit_NJ said:
A step that is uncomfortable at week two is frequently comfortable at week six with no change in dose, because the gastric-emptying component…

Agreed on the arithmetic, with one condition: holding indefinitely at a dose that is not doing anything is not patience, it is a stall with a nice name. The distinction is whether appetite has changed at all at the current step.

Last edited: Jul 22, 2024 at 7:38 AM
48 18MikeKY_noInsulin, Dr.RaviCardio, jennifer_SEA and 45 others
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tom_AK
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Jul 22, 2024 at 5:51 AM#4
raj_cambridge said:
Four dose steps in, holding each one the full four weeks, and I am trying to work out whether the interval is a pharmacological requirement or a…

This matches mine closely enough to be worth saying so. The trials generally allowed a step to be held or reduced and then retried, and people who did that mostly arrived at the same place a few weeks later. The end point of the ladder is set by tolerability, not by a schedule, and there is no evidence that reaching the top faster produces a better outcome.

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roxy_nash
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Jul 22, 2024 at 7:01 AM#5

Adding the clinical framing, because it changes how the question reads.

PSA for titration users considering the 0.25mg starting dose: this dose is NOT intended for weight loss. It's a titration dose to let your body adjust. Don't be discouraged if you don't lose much in the first month.

The therapeutic dose for weight management starts at 1.7mg (semaglutide) or 5mg (tirzepatide). Be patient with the ramp-up.

46 16kim_atl_prep, sarah_TO, wendy_avl and 43 others
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