Semaglutide is injected once per week, on the same day each week. This applies to both brand-name versions of injectable semaglutide: Ozempic (for type 2 diabetes) and Wegovy (for weight management). You can take it at any time of day, with or without food.
Choosing Your Injection Day
Pick whichever day of the week works best for your routine. What matters is consistency: if you start on a Tuesday, every injection should fall on a Tuesday. You’re not locked in forever, though. If you need to switch your injection day, you can, as long as at least two days (48 hours) have passed since your last dose.
There’s no evidence that morning injections work better than evening ones, or that eating beforehand changes how the medication performs. Some people find that injecting in the evening helps them sleep through the mild nausea that can occur in the first few weeks, but this is personal preference, not a clinical requirement.
The Dose Escalation Schedule
While the weekly frequency stays the same from your very first injection, the amount you inject increases gradually over several months. This slow ramp-up exists to reduce nausea, vomiting, and other stomach-related side effects that are common when starting.
For Ozempic (type 2 diabetes), the schedule is straightforward. You start at 0.25 mg once weekly for the first four weeks. After that, the dose increases to 0.5 mg weekly. Depending on how well your blood sugar responds, your prescriber may keep you at 0.5 mg or increase to 1 mg or 2 mg weekly.
For Wegovy (weight management), the escalation takes longer because the final dose is higher. The FDA-approved schedule looks like this:
- Weeks 1 through 4: 0.25 mg once weekly
- Weeks 5 through 8: 0.5 mg once weekly
- Weeks 9 through 12: 1 mg once weekly
- Weeks 13 through 16: 1.7 mg once weekly
- Week 17 onward: 2.4 mg once weekly (maintenance)
That’s about four months of gradual increases before you reach the full maintenance dose. If side effects are difficult at any step, the escalation can be paused for an extra four weeks at the current dose before moving up. Some adults who can’t tolerate 2.4 mg stay on 1.7 mg as their long-term maintenance dose.
How Long You Stay on It
Once you reach your maintenance dose, the weekly injection schedule continues indefinitely. Semaglutide isn’t a short-term treatment with a built-in stopping point. For diabetes, it provides ongoing blood sugar control. For weight management, studies consistently show that weight tends to return after discontinuation, which is why the prescribing guidance doesn’t specify an end date. The “week 17 and onward” language in the FDA label reflects this open-ended timeline.
What to Do If You Miss a Week
If you forget your injection, take it as soon as you remember, as long as it’s within five days of the missed dose. So if your usual day is Monday and you remember by Saturday, go ahead and inject. Then return to your normal Monday schedule the following week.
If more than five days have passed, skip that dose entirely and wait for your next scheduled day. Never double up by taking two doses in one week.
The Oral Version Works Differently
There is also an oral form of semaglutide called Rybelsus, approved for type 2 diabetes. Unlike the injectable versions, Rybelsus is taken once daily, not once weekly. It starts at 3 mg daily for the first 30 days, then increases to 7 mg daily, with an option to go up to 14 mg if needed. The daily pill and the weekly injection are not interchangeable without guidance from a prescriber, but for reference, 14 mg of Rybelsus daily is roughly equivalent to 0.5 mg of Ozempic weekly.
If the idea of a weekly injection feels like a barrier, the oral option exists, though it comes with its own requirements: you need to take it on an empty stomach with no more than 4 ounces of plain water, then wait at least 30 minutes before eating or drinking anything else.