Semaglutide is taken once a week as an injection or once a day as a pill, depending on the form prescribed. The dosing frequency stays the same from the first dose through long-term maintenance. What changes over time is the amount per dose, which gradually increases over several months to reduce side effects.
Injectable Semaglutide: Once a Week
Both brand-name injectable versions of semaglutide are given as a once-weekly shot. You pick a day of the week that works for you and inject on that same day every week, at any time of day, with or without food. It doesn’t matter whether you choose Monday morning or Friday evening, as long as you’re consistent.
The reason once-weekly dosing works is that semaglutide has an unusually long half-life of about 6.5 days. After injection, the drug binds to a protein in your blood called albumin, which shields it from being broken down or filtered out by your kidneys. This means a single shot maintains effective drug levels in your body for a full week, with steady-state concentrations building up over the first four to five weeks of use.
Oral Semaglutide: Once a Day
The pill form of semaglutide is taken once daily rather than once weekly. The tablet version requires more frequent dosing because absorbing a peptide drug through the stomach is inherently less efficient than injecting it under the skin.
The daily pill comes with strict timing rules. You take it first thing in the morning on an empty stomach with no more than 4 ounces of plain water. Then you wait at least 30 minutes before eating, drinking anything else, or taking other medications. Waiting less than 30 minutes or taking it with food significantly reduces how much of the drug your body absorbs. Waiting longer than 30 minutes can actually increase absorption.
How the Dose Increases Over Time
Regardless of whether you’re using the injection or the pill, you start at a low dose and work up. This gradual increase, called titration, helps minimize nausea and other gastrointestinal side effects that are common when starting semaglutide.
For the injectable version used for weight management, the typical 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 dose)
Each step up happens after four weeks, though some people stay at a given dose longer if side effects are bothersome. The frequency never changes. You’re still injecting once a week at every stage. The version prescribed for type 2 diabetes follows a similar pattern but tops out at a lower maintenance dose of 2 mg once weekly.
For the oral version, you start at 3 mg daily for 30 days, then increase to 7 mg daily. If blood sugar control still needs improvement, the dose can go up to 14 mg daily after at least another 30 days.
How Long You Stay on It
Current medical guidelines from both the American Association of Clinical Endocrinology and the American Diabetes Association treat obesity as a chronic, relapsing condition. That means semaglutide is generally prescribed as an ongoing medication, not a short course. There’s no built-in end date, and the once-weekly (or once-daily) frequency remains the same whether you’ve been taking it for three months or three years.
Some people do eventually taper off, stepping down from the maintenance dose over 8 to 12 weeks. Clinicians who use this approach typically reduce the dose incrementally, for example moving from 2.4 mg down to 1.0 mg, then to 0.5 mg, before stopping. This is based on clinical experience rather than formal guidelines, and no major medical organization currently recommends a specific tapering protocol. During maintenance, follow-up visits typically happen every 8 to 12 weeks.
What to Do if You Miss a Dose
If you miss your scheduled injection day, you have a five-day window to take it. So if you normally inject on Monday and forget, you can still take it anytime through Saturday. If more than five days have passed, skip that dose entirely and inject on your next scheduled day. Never double up to make up for a missed dose.
Practical Tips for Your Weekly Injection
You can inject semaglutide in your stomach area, the front of your thighs, or your upper arm. Rotate your injection site each week to prevent skin irritation or changes in the tissue under the skin. If you prefer sticking to one general area, like your thigh, use a different spot within that area each time.
Storage matters for keeping the drug effective. Ozempic pens can be kept at room temperature (up to 86°F) for 56 days after first use. Wegovy pens are more sensitive and last up to 28 days outside the refrigerator. Before first use, both should be stored in the fridge between 36°F and 46°F. Setting a weekly phone alarm for your injection day and keeping the pen in a consistent spot helps build the routine.