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GLP-1 Dosing Timeline — What to Expect Week by Week

A visual guide to your GLP-1 titration schedule. See the exact doses, common side effects, and practical tips for every phase of treatment — from your first injection to maintenance.

Week 1
Weeks 1 - 4Well toleratedYou are here
0.25 mgweekly injection
Common Side Effects

Mild nausea possible. Most people tolerate this starter dose well with minimal disruption.

Tips for This Phase

Eat smaller, more frequent meals. Stay well hydrated. Inject on the same day each week to build a routine.

Weeks 5 - 8Adjustment phase
0.5 mgweekly injection
Common Side Effects

Nausea may increase. Appetite suppression becomes noticeable. Some experience constipation or mild headaches.

Tips for This Phase

Avoid high-fat or greasy foods. Keep bland snacks on hand (crackers, toast). Ginger tea can ease nausea.

Weeks 9 - 12Side effects may peak
1 mgweekly injection
Common Side Effects

GI side effects peak for many patients. Significant appetite changes. Nausea, diarrhea, or constipation possible.

Tips for This Phase

This is often the hardest phase — it gets better. Prioritize protein at every meal. Talk to your provider if symptoms are severe.

Weeks 13 - 16Adjustment phase
1.7 mgweekly injection
Common Side Effects

Body is adapting. Side effects typically improving. Continued strong appetite suppression.

Tips for This Phase

Focus on nutrient-dense foods since you are eating less. Light exercise (walking 20-30 min) helps digestion and mood.

Week 17+Well tolerated
2.4 mgweekly injection (maintenance)
Common Side Effects

Full therapeutic dose. Most side effects have resolved. Steady-state weight loss continues.

Tips for This Phase

This is your maintenance dose. Continue healthy habits. Regular check-ins with your provider every 3-6 months.

Important:This timeline reflects the standard FDA-approved titration schedule. Your provider may adjust the pace based on your individual response and tolerability. Always follow your prescriber's specific instructions.

Frequently Asked Questions

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Disclaimer: This dosing timeline is based on FDA-approved prescribing information for Wegovy (semaglutide 2.4 mg), Ozempic (semaglutide 1 mg/2 mg), Zepbound/Mounjaro (tirzepatide), and Rybelsus (oral semaglutide). Side effect descriptions are based on clinical trial data. This tool is for informational purposes only and does not constitute medical advice. Always follow your healthcare provider's prescribed titration schedule.