Semaglutide Dosing Guide: Starting Doses, Titration, and Maintenance

Written by Adam Maggio | Medically reviewed by Dr. James Whitfield, DO, FACOI

Semaglutide is titrated slowly to minimize GI side effects. Start at 0.25 mg weekly for 4 weeks, increase to 0.5 mg for 4 weeks, then 1 mg. For weight loss (Wegovy), continue titrating up to 2.4 mg over 16–20 weeks. Most weight loss occurs at doses above 1 mg.

Why Slow Titration Matters

Semaglutide's GI side effects — nausea, vomiting, diarrhea, and constipation — are dose-dependent and most severe when the dose is increased too rapidly. The standard titration schedule was specifically designed to allow the GI tract to adapt to the medication, minimizing side effects while gradually achieving therapeutic doses. Skipping titration steps or increasing doses too quickly is the most common cause of treatment discontinuation.

Standard Titration Schedule (Ozempic for Diabetes)

Weeks 1–4: 0.25 mg once weekly (initiation dose, not therapeutic). Weeks 5–8: 0.5 mg once weekly (first therapeutic dose). Week 9+: 1 mg once weekly (standard maintenance dose). If additional glycemic control is needed: 2 mg once weekly (maximum dose for diabetes indication).

Weight Loss Titration Schedule (Wegovy)

Weeks 1–4: 0.25 mg once weekly. Weeks 5–8: 0.5 mg once weekly. Weeks 9–12: 1 mg once weekly. Weeks 13–16: 1.7 mg once weekly. Week 17+: 2.4 mg once weekly (target maintenance dose). If the 2.4 mg dose is not tolerated, the patient can remain at 1.7 mg.

Managing Side Effects During Titration

Nausea is the most common side effect and is most pronounced during dose increases. Strategies to minimize nausea include: eating smaller, more frequent meals, avoiding high-fat and spicy foods, injecting in the evening (so peak nausea occurs during sleep), and using ginger tea or over-the-counter antiemetics if needed. If side effects are severe, the dose escalation can be slowed — spending 8 weeks at each dose level rather than 4.

When to Expect Results

Most patients begin to notice appetite suppression within the first 1–2 weeks. Meaningful weight loss typically begins at doses of 0.5–1 mg and accelerates at higher doses. The full weight loss effect of semaglutide at 2.4 mg is typically achieved over 60–68 weeks. Patients who do not lose at least 5% of their body weight after 16 weeks at the 1 mg dose are unlikely to achieve significant weight loss with continued treatment.