I messed up. I was on 0.25mg for 4 weeks, then 0.5mg for only 2 weeks, and I was feeling great so I figured why not jump to 1.0mg. My provider's protocol said 4 weeks at each dose but I got impatient because I'd had minimal side effects and wanted faster results.

It has been 48 hours since my 1.0mg injection and I am MISERABLE. Constant nausea, couldn't eat anything yesterday, acid reflux that kept me up all night, and I threw up this morning. I feel like I have the worst hangover of my life.

What can I do NOW? Can I somehow "undo" the dose? Should I drop back to 0.5mg next week? I'm genuinely worried. 😫

First — you can't undo the injection. Semaglutide is a large peptide administered subcutaneously, and once it's absorbed from the injection site, it's in your system. With a half-life of ~168 hours, the 1.0mg dose will take several weeks to fully clear. But the good news: you'll start feeling better well before that.

The peak GI side effects typically occur within the first 24–72 hours after injection, so you may already be through the worst of it. Here's what to do right now:

1. Stay hydrated. Small sips of water, electrolyte drinks, or clear broth. Dehydration will make the nausea worse.
2. Eat small, bland meals. Crackers, toast, plain rice, bananas. Avoid fatty, spicy, or heavy foods.
3. OTC nausea relief: Dramamine (meclizine) or Pepto-Bismol can help. Some providers will prescribe ondansetron (Zofran) for severe GI symptoms.
4. Next week: Go back to 0.5mg. Do NOT take another 1.0mg dose. Stay at 0.5mg for at least 4 full weeks before attempting to titrate up again.

The titration schedule exists for exactly this reason. The 4-week minimum at each dose allows GI receptor desensitization. Skipping ahead doesn't give your body time to adapt.

I did literally the same thing — jumped from 0.5 to 1.0 after only 2 weeks on 0.5. Spent a weekend in bed. The nausea subsided around day 4–5 for me. You WILL feel better soon, I promise.

I went back to 0.5mg the following week and stayed there for 6 weeks before trying 1.0 again. Second time around? Barely any nausea. The slow titration genuinely matters.

Previously posted:

acid reflux that kept me up all night, and I threw up this morning

The reflux is really common with aggressive titration. Semaglutide delays gastric emptying, so food sits in your stomach longer and you produce more acid. When you jump doses, this effect ramps up faster than your body can adjust.

In the short term: sleep with your head elevated (extra pillow or wedge), don't eat within 3 hours of bedtime, and consider an OTC antacid like famotidine 20mg. If the vomiting continues past 48 hours or you can't keep fluids down, see your provider — they may prescribe an antiemetic.

And please, please follow the titration schedule going forward. I see this in my clinic weekly and it always ends the same way. 😬

Update: day 3 now and the nausea has finally eased up a lot. I could eat some soup and crackers for dinner without wanting to die. The reflux is still there but manageable with the elevated pillow trick.

I will absolutely be going back to 0.5mg next week and I will NOT skip ahead again. Lesson very painfully learned. Thank you all for talking me off the ledge.