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?
383
c/retatrutide·posted 2 months ago by u/nadia_trevino

is it normal to get injection-site soreness at week 72

Discussion Cold Box ×6

is it normal to get injection-site soreness at week 72. Full detail below, and I have tried to keep the editorialising out of it.

The phase 2 readout ran to 48 weeks in a few hundred participants with a slow escalation. Both the size and the duration matter when people quote the headline number.

Glucagon receptor agonism is associated with increased energy expenditure and with hepatic effects. That is a mechanistic story with strong preclinical support and limited phase 2 human data.

If two or three other people have done the same thing we might actually learn something. Alone it is an anecdote.

601 up / 218 down73% upvoted18 commentsid uifu2r12 May 2026

18 comments

15 in this archive, depth 4

best — the order this archive was captured in

u/injection_site_iris52 points·2 months ago

The standing caveat, written out properly because it keeps getting compressed into a footnote.

Nothing containing this compound is approved by any regulator. Research-use-only material is not approved for human use. That is not a legal formality on this board — it is why there is so little independent data, why the escalation schedules people post are invented, and why nobody here can answer a dosing question.

What this board can usefully do is read the published trials carefully, log independent purity results, and be honest about how thin the evidence base is. Everything else belongs somewhere with a clinician in it.

replysharereportpermalink
u/mod_cold_roommod · c/coldchain22 points·2 months ago

The standing caveat, written out properly because it keeps getting compressed into a footnote.

Agreed, and the glucagon arm is exactly why the comparison threads do not work.

replysharereportpermalink
u/fabio_lehtinen13 points·2 months ago·edited

How fast was the escalation? That is usually the variable that explains the reports.

replysharereportpermalink
u/niels_lindqvist19 points·2 months ago

How fast was the escalation?

Adding the standing caveat: none of this is approved anywhere and research material is not for human use.

replysharereportpermalink
u/freya_baptista-14 points·2 months ago

Which phase 2 arm are you quoting, and at what week?

replysharereportpermalink
u/incretin_ivypharmacology35 points·2 months ago

It is a triple agonist at the GLP-1, GIP and glucagon receptors. The glucagon arm is the genuinely novel component and it is the one with the least human outcome data behind it.

replysharereportpermalink
u/signe_villalobos0 points·2 months ago

It is a triple agonist at the GLP-1, GIP and glucagon receptors.

Disagree with this specific inference. A 48-week readout does not tell you the shape of the curve after it.

replysharereportpermalink
u/clara_weiss22 points·2 months ago

It is a triple agonist at the GLP-1, GIP and glucagon receptors.

incretin_ivy is right about the escalation being the variable. It explains most of the difficult reports here.

replysharereportpermalink
u/honest_syringe3312 points·2 months ago

That is body weight change, not fat mass. The trials report the first and people quote it as the second.

replysharereportpermalink
u/trialwatch_theotrial nerd25 points·2 months ago

comparing reta phase 2 to sema phase 3 is comparing different things

replysharereportpermalink
u/ledger_modmod · vetting8 points·2 months ago

dose escalation in the trials was slow for a reason

replysharereportpermalink
u/burned_once_twice17 points·2 months ago·edited

Sceptical of the extrapolation. Forty-eight weeks does not tell you about seventy-two, and the curve shape is exactly what is unknown.

replysharereportpermalink
u/customs_seizure_sid0 points·2 months ago

Careful with the rankings. A phase 2 result and a phase 3 result are not on the same evidential footing and cannot be listed in one table.

replysharereportpermalink
u/elodie_grimaldi1 point·2 months ago

Phase 2 estimates effect and finds a dose range. Phase 3 estimates it precisely in a bigger population and catches what phase 2 was too small to see. Treating them as the same tier of evidence is the recurring error here.

replysharereportpermalink
u/jarno_cabrera0 points·2 months ago

That reads as a titration plan for an unapproved compound. This board cannot host that and it should not want to.

replysharereportpermalink
About c/retatrutide

Retatrutide: GIP/GLP-1/glucagon triple agonism, the TRIUMPH programme, and the fact that most people discussing it are handling research-grade material with no human-use approval anywhere. Dose-response, heart-rate signal, and the unusually steep phase-2 weight curves get argued about here weekly.

65kmembers
130submissions
Sep 2023created
submissions / month, last year
Sponsored

Janoshik Analytical

Independent HPLC and mass spec. The number you get is the number they found.

janoshik.com
Sponsored

GL Biochem (Shanghai)

Custom peptides and amino acids direct from the manufacturer since 1998. ISO 9001 / cGMP. Batch COA every order.

glbiochem.net
c/retatrutide rules
  1. Retatrutide is not approved anywhere for human use. Posts must not read as usage instructions.
  2. Phase 2 numbers are not maintenance numbers. Cite the trial and the dose arm.
  3. Heart-rate and dose-escalation reports need actual measurements, not impressions.
  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.
Moderators
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.