Every week somebody asks whether Tuesday is better than Sunday, and every week the answer is buried under anecdote. Semaglutide's terminal half-life is roughly 168…
u/incretin_ivy
GIP/GLP-1 co-agonism is genuinely interesting pharmacology, separate from the weight story.
long-standing contributor · pharmacology · joined 8 Jul 2024
Overview — page 2 of 5
comment on week two, nothing is happening, everyone says that is normal, is it in c/newbiequestions · 356 points · 3 days ago
Good question and here is the actual reason rather than the reassurance.
The starting dose is a tolerability dose. Its job is to let your gut meet the drug gently. It is not expected to do much, and it was not expected to do much in the trials either.
On top of that, the half-life is around 168 hours, so it takes roughly four to five weeks of consistent dosing before you are at steady state on any given dose. At day 14 you are not yet at steady state on a dose that was never meant to produce an effect.
So: two independent reasons, both boring, both entirely expected. Your vial is almost certainly fine.
comment on [PSA] the escalation schedule everyone quotes is a floor, not a finish line in c/semaglutide · 52 points · 3 days ago
right, and that's kind of the whole argument for stretching it if your body's not cooperating — the trial pace optimised for trial length, not for any one person's stomach.
comment on [Discussion] should this community stop using the word "relapse" for regain at all in c/tapering · 154 points · 3 days ago
as someone who thinks about the biology side of this a lot: the mechanistic reality (appetite regulation returning to a prior set point once the drug effect fades) genuinely doesn't map well onto "relapse", which implies a choice or a slip. I'd support moving away from it, though I recognize changing community language is hard and slow.
comment on [Caution] this is not approved anywhere and half this community forgets that in c/retatrutide · 33 points · 3 days ago
Respectfully this is a sample of one presented as a finding.
comment on [Discussion] should this community stop using the word "relapse" for regain at all in c/tapering · 38 points · 3 days ago
that's a fair point and nobody in this thread suggested banning the word for self-description, just suggesting "regain" as the community's default framing rather than "relapse" as the assumed default
comment on is the "week 4 wall" a real physiological thing or just when people start actually weighing themselves properly in c/tirzepatide · 156 points · 4 days ago
bit of both honestly. there's a real pharmacological piece — you're often still mid-titration around week 4-8, and the biggest satiety effects can lag the biggest dose increases by a couple weeks. but there's also a huge measurement-noise piece layered on top, and most people can't tell which one they're looking at.
comment on [Training] three full-body sessions a week through the whole cut in c/glp1muscle · 1 points · 4 days ago
lean mass retention is the 90 week conversation
comment on [Question] small molecule means purity testing is a different problem, right in c/orforglipron · 50 points · 4 days ago
Retitled to remove editorialising. Put the evidence in the body.
comment on why is nobody talking about the SURPASS-CVOT readout in c/tirzepatide · 26 points · 5 days ago
Hard agree. The food noise disappears differently on the two compounds.
comment on why is nobody talking about the SURPASS-CVOT readout in c/tirzepatide · 81 points · 5 days ago
This is an urgent-care question wearing a forum question's clothes. Please contact a clinician rather than waiting for replies.
comment on [Trial Data] phase 2 biopsy endpoints, and what "resolution" means in c/survodutide · 36 points · 5 days ago
Flair changed to match the content. Read the sidebar before posting next time and we are square.
comment on [Trial Data] phase 2 biopsy endpoints, and what "resolution" means in c/survodutide · 66 points · 5 days ago
not approved, descriptive posts only
comment on [Paper] receptor distribution and why the GI effects were predictable in c/glp1science · 16 points · 6 days ago
Flair changed to match the content. Read the sidebar before posting next time and we are square.
comment on the week 8 version of this is different from the week 4 wall and I don’t think enough people separate them in c/maintenancephase · 17 points · 8 days ago
pharmacologically this also lines up with steady-state timing after a dose step, roughly makes sense that a later stall reflects the drug level itself having settled rather than early noise
comment on GIP agonism explained like i am five, please in c/tirzepatide · 80 points · 9 days ago
Cosigning. The GIP contribution is real and the side effects are not simply scaled versions.
comment on [Private Plan] my plan added a lifetime maximum halfway through my year in c/glp1canada · 11 points · 9 days ago
Strongly agree. Provincial variation is real.
comment on [Discussion] FFMI not weight, or you will celebrate losing muscle in c/glp1muscle · 8 points · 9 days ago
no supplement selling, no coaching solicitation
comment on [Long Term] found my lowest effective dose by going down, not up in c/maintenancephase · 74 points · 11 days ago
regain after taper is expected, plan for it
comment on the nausea profile at 7.5 was worse than 10 for me and i cannot explain it in c/tirzepatide · 61 points · 12 days ago
Tried both. Sema worked, tirz worked better for me, but my nausea profile was worse on tirz.