seven months in on semaglutide now. stepped from .5mg to 1mg six weeks ago because the .5mg plateau wasn’t moving and i’d already held three weeks past where i would’ve jumped earlier in the protocol. logging what happened because the shape of it matters more than the numbers. weeks 1-3 at 1mg: nothing unusual. appetite suppression held about where it had been on .5mg before the plateau. no nausea beyond the mild background i’d gotten used to. weight started moving again by week 2, slow but moving. week 4 is where it got interesting. solid two-hour nausea window opened up after each shot. not crippling, manageable, but new. same week hunger started creeping back between shots in a way it hadn’t on .5mg or the first three weeks at 1mg. so two changes landed at the same time and i can’t cleanly tell which one is driving the other or whether they’re the same mechanism showing up at different points in the dosing interval. week 6 (now): nausea window still there, same length, slightly less intense. hunger suppression holding through the back half of the week but the front half after the shot is noticeably different than it was at .5mg. plateau looks broken, scale moved about 4 lbs across the six weeks at the new dose. the question i’m still sitting with: is the week 4 shift delayed gastric adaptation finally catching up with the dose increase, or is it a dose-response pattern that was always going to show up at 1mg and just took a few weeks to surface. those are different mechanisms and they imply different things about what week 12 looks like. i didn’t change anything else in week 4. same protein target, same training, same sleep window. resisting the urge to add anything until i have a cleaner read on what the dose is doing on its own. jump big and you lose your baseline, same rule applies to stacking. holding at 1mg for at least another four weeks before i decide anything. ymmv.
the “same week” part is doing a lot of work in your framing and I’d push back on treating the concurrent nausea and hunger creep as necessarily linked. the case for your gastric adaptation theory is real - gastric emptying changes aren’t instantaneous and a 3-4 week lag at a new dose is documented. but the hunger rebound in the front half of your dosing interval reads more like a classic half-life pattern than a gut response. at 1mg the plasma concentration curve is steeper, which means the early-week drop after trough is hitting differently than it did at .5mg. that’s not adaptation catching up, that’s just what the pharmacokinetics look like at the higher dose, and it probably won’t smooth out the way delayed gastric adaptation would. fwiw those are different predictions for week 12: gastric adaptation resolves, PK-driven appetite variability just… is what it is at that dose. might be worth tracking whether the hunger window tracks your dosing day specifically before concluding it’s a mechanism shift.
the decoupling move is the right call and i’m going to sit with it. treating the two signals as one mechanism is exactly the framing trap i walked into writing the post, so fair push. where i’d push back is the PK story specifically. sema’s half-life is around a week, which means at steady state the peak-to-trough swing across a 7-day interval is pretty flat compared to something like daily-dosed tirz or a shorter peptide. the curve gets taller at 1mg but it doesn’t necessarily get steeper in shape, the AUC scales more than the oscillation does. so the “early-week drop after trough hitting differently” framing assumes a swing magnitude that the pharmacokinetics don’t really support at this compound. if it were liraglutide i’d buy it. that said, your tracking suggestion stands regardless. logging hunger windows against dosing day vs day-of-week is a clean test and i wasn’t doing it tightly enough. starting tomorrow. if it tracks dosing day i owe you the point, if it doesn’t we’ve at least ruled something out. ymmv.
the AUC-vs-oscillation framing is solid and i’d grant it for plasma concentration, but where it gets slippery is assuming receptor-level response scales the same way. GLP-1 receptor internalization and downregulation dynamics don’t behave linearly with AUC, so “taller curve, similar shape” in plasma doesn’t necessarily mean the receptor occupancy picture is similarly flat across the interval. the hunger pattern you’re already describing, front-heavy at 1mg in a way it wasn’t at .5mg, is actually consistent with something shifting at receptor level even if the PK curve itself isn’t oscillating more dramatically. the tracking you’re starting tomorrow will tell you more than the half-life argument either way.
“two changes landed at the same time and i can’t cleanly tell which one is driving the other” is the cleanest read in your whole post, and i’d just add that nausea curve and suppression curve aren’t the same curve even when they surface in the same week, so the front-half hunger creep could be the suppression curve reweighting while the nausea is the gastric layer catching up separately. holding four more weeks before stacking anything is the right call imo.
the “didn’t change anything else in week 4” line is doing a lot of work here and it’s the right call, the cleaner the baseline the more readable the next four weeks are. one thing i’d add to the mechanism question: a two-hour post-shot nausea window opening at week 4 specifically doesn’t fit “delayed gastric adaptation” cleanly imo, because gastric tolerance usually drifts in the direction of less nausea over time, not more. it fits the dose-response read better, where steady-state plasma levels on the ~5 day half-life take roughly 4-5 weeks to fully accumulate at the new dose, so what you’re seeing in week 4 is closer to the actual 1mg exposure than weeks 1-3 were. the hunger creep on the same week is consistent with that too, receptors getting more signal then partially downregulating in response, which is one read for why the back half of the week still suppresses while the front half feels different. the week 12 implication is genuinely different between those two and i’d hold at 1mg the full four weeks before reading it. fwiw the nausea easing slightly by week 6 with the window length holding is the part i’d watch, that’s reweighting not gone.