GLPHubglpresearchhub.com
Read-only archive. GLP Research Hub is a static community record — nothing here is for sale, no account is needed, and no vote you cast is counted. Why?
1.6k
c/tirzepatide·posted 28 days ago by u/nordic_pricing

[Question] does the vial concentration change how much dead space costs me

Question Long Haul ×2 Cold Box ×3

Something I noticed reading old threads that I have not seen said out loud.

The advice on Mounjaro in this community changed substantially around the start of last year, and nobody went back and updated the older posts. So depending on which thread the search engine hands you, you get two contradictory answers with the same confidence.

I have listed what I think the current consensus is below. Correct me — that is the point of posting it.

1,722 up / 105 down94% upvoted44 commentsid qwccap1 Jul 2026

44 comments

16 in this archive, depth 3

best — the order this archive was captured in

u/kofi_balogun90 points·27 days ago

dual agonism is Mounjaro, do not generalise from semaglutide

replysharereportpermalink
u/vito_chowdhury53 points·28 days ago

The practical rule people converge on is 28 days at fridge temperature after first puncture, and that comes from the preservative, not the peptide.

replysharereportpermalink
[deleted]39 points·28 days ago

[deleted]

replysharereportpermalink
u/ignacio_vanhecke10 points·27 days ago

[deleted]

Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.

replysharereportpermalink
u/taper_off_tabitha42 points·27 days ago

Yeah, dual agonism does produce a different appetite profile than GLP-1 alone.

replysharereportpermalink
u/nordic_pricingOP26 points·27 days ago

Switched from sema at 5mg to tirz at 1.7mg. Different drugs, cannot compare the doses directly.

replysharereportpermalink
u/priya_guerrero28 points·27 days ago

Zepbound and Mounjaro are literally the same drug, the name is the only difference

replysharereportpermalink
u/teodor_szabo16 points·27 days ago·edited

Not convinced. The evidence does not support that reading.

replysharereportpermalink
u/nordic_pricingOP9 points·26 days ago

SURMOUNT data is messier than STEP data but the weight loss is there

replysharereportpermalink
u/quiet_moderatorMOD15 points·27 days ago

This is an urgent-care question wearing a forum question's clothes. Please contact a clinician rather than waiting for replies.

replysharereportpermalink
u/nordic_pricingOP0 points·27 days ago

The dual agonism story is real. The appetite is physically different from semaglutide alone.

replysharereportpermalink
u/ferritin_low1 point·27 days ago·edited

week 42 on Mounjaro and the appetite profile is genuinely different from sema

replysharereportpermalink
u/hair_shed_hannah1 point·27 days ago

the 15mg is the top of the pen, not the required dose

replysharereportpermalink
u/throwaway_wl20261 point·27 days ago

the appetite change on tirz is more than just reduced hunger, it is different machinery

replysharereportpermalink
u/noor_hovland11 points·27 days ago

This is an urgent-care question wearing a forum question's clothes.

Disagree on that part. 93.7% and 99.3% on the same vial is normal.

replysharereportpermalink
u/nz_unfunded9 points·27 days ago

Not to be pedantic but tirzepatide and GIP are being used interchangeably and they are not interchangeable in real life.

replysharereportpermalink
Permalinked branches
Deep branches get their own page so a single reply chain can be linked and read on its own.
About c/tirzepatide

Tirzepatide-specific discussion: the dual-agonist pharmacology, the 2.5 → 15mg ladder, the appetite profile people describe as different from semaglutide, and the SURMOUNT/SURPASS trial programme. Comparisons with semaglutide are welcome as long as they are specific about dose equivalence being unknown.

187kmembers
130submissions
Aug 2023created
submissions / month, last year
Sponsored

PeptideMeter Analytics

Independent testing plus vendor-level trend data. Community-funded, unaffiliated.

peptidemeter.com
More in c/tirzepatide
c/tirzepatide rules
  1. "Tirz is better than sema" needs a comparator dose or it is a vibe, not a claim.
  2. Vial-splitting and self-compounding discussion stays in c/reconstitution.
  3. No pen-cracking tutorials. Discussing that people do it is fine; instructions are not.
  4. Independent community. Nobody here sells anything, and anyone who tries is banned.
  5. Not medical advice. Describe what you did; never prescribe to a stranger.
  6. Claims need evidence. Batch numbers, dated screenshots, independent test reports, or a citation.
  7. No referral links, discount codes or affiliate URLs. Permanent ban, no appeal.
  8. No contact handles, wallet addresses or tracking numbers — they identify people.
  9. Be recognisably decent. Disagree hard, insult nobody.
Full rules and how they are enforced →
Moderators
u/titration_marshalu/incretin_ivyu/quiet_moderatoru/dexa_twice_yearly
Volunteers. Unpaid, unaffiliated, and reachable through modmail only.
Before you read on

Several compounds discussed on GLP Research Hub are sold for research use only and are not approved for human use anywhere. Nothing here is medical advice and none of it is written by your clinician. If a post reads like an instruction, treat it as a description of what one stranger did.

Full disclaimer →