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ForumsPharmacology & MechanismsTachyphylaxis vs tolerance — pharmacological distinction on GLP-1 Page 3

Tachyphylaxis vs tolerance — pharmacological distinction on GLP-1

SarahChen_PharmD Fri, Jun 5, 2026 at 1:01 AM 19 replies 515 viewsPage 3 of 4
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Jun 5, 2026 at 5:16 AM#11

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

Tagging this for the weekly digest. 👍

45 23PedsEndoPhilly, SleepDoc_PDX, RegAffairsDC and 42 others
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TirzTom
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Jun 5, 2026 at 5:33 AM#12

Slightly tangential to Tachyphylaxis vs but Dr.GutHealth 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.

Last edited: Jun 5, 2026 at 9:33 AM
42 24tom_AK, josh_phd_bmore, roxy_nash and 39 others
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sarah_TO
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Jun 5, 2026 at 5:50 AM#13
TinaHashiRN said:
Follow-up question: how long did you wait before increasing your dose

This is exactly right. TinaHashiRN articulated what I have been trying to explain to my doctor for months. The Tachyphylaxis vs aspect is the most important factor.

25 10GraceAZ_72, carl_compliance, DanielChem_CHI and 22 others
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MariaRD
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Jun 5, 2026 at 6:07 AM#14

Saving this for reference. Top-tier content.

Last edited: Jun 5, 2026 at 7:07 AM
26 11rick_sfbay, maria_elpaso, anders_CPH and 23 others
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NicoleRaleigh
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Jun 5, 2026 at 6:24 AM#15

Adding my data to this Tachyphylaxis vs discussion:

MetricBaselineMonth 4Month 8
Weight242 lbs222 lbs217 lbs
A1C6.6%6.2%5.4%
hsCRP6.03.00.8

Protocol: Tirzepatide 15mg/wk, resistance training 3x/wk, protein 1.4g/kg/day.

9 13mike_nyc, VendorMark, COA_Karl and 6 others
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