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ForumsTirzepatide (Mounjaro / Zepbound)Tirzepatide half-life and injection timing — PK data Page 3

Tirzepatide half-life and injection timing — PK data

PharmD_Rodriguez Tue, May 19, 2026 at 2:07 AM 20 replies 760 viewsPage 3 of 4
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May 19, 2026 at 6:22 AM#11

Moderator note: Reminder: nothing posted here constitutes medical advice. Consult your healthcare provider.

Tagging this for the weekly digest. 👍

Last edited: May 19, 2026 at 10:22 AM
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Dr.BariatricHTX
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May 19, 2026 at 6:39 AM#12

Slightly tangential to Tirzepatide half-life and but julia.endo reminded me — does anyone have experience combining this with metformin?

I know it is not exactly on-topic but it seems related enough to ask here rather than starting a new thread. Apologies if this has been covered — I did search first.

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HealthEcon_DC
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May 19, 2026 at 6:56 AM#13
mia_MS2 said:
Follow-up question: how long did you wait before increasing your dose

This is exactly right. mia_MS2 articulated what I have been trying to explain to my doctor for months. The Tirzepatide half-life and aspect is the most important factor.

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TinaHashiRN
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May 19, 2026 at 7:13 AM#14

Saving this for reference. Top-tier content.

Last edited: May 19, 2026 at 1:13 PM
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FDA_TrackerJim
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May 19, 2026 at 7:30 AM#15

Adding my data to this Tirzepatide half-life and discussion:

MetricBaselineMonth 5Month 8
Weight254 lbs239 lbs209 lbs
A1C6.8%6.0%5.4%
hsCRP8.04.01.2

Protocol: Semaglutide 1.7mg/wk, resistance training 3x/wk, protein 1.6g/kg/day.

27 24jason_paloalto, Dr.LeslieOBGYN, MikeNYC_runner and 24 others
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