Wegovy · Side effects
Wegovy side effects — and the nutrition fix for each
6 common side effects of Wegovy (semaglutide), with the frequency and the specific nutrition strategy that helps most patients manage it.
Nausea
Very commonAffects ~44% of Wegovy users. Most intense during titration (weeks 1–16), tapers as the body adapts. Typically peaks 24–48 hours post-injection.
Nutrition fix
Eat 5–6 small, room-temperature meals. Avoid fried, fatty, spicy foods. Ginger tea or capsules pre-meal. Stop eating at first sign of fullness — Wegovy delays gastric emptying.
Diarrhea
CommonAffects ~30% of Wegovy users, often during dose escalations.
Nutrition fix
BRAT-style foods (banana, rice, applesauce, toast) plus electrolyte drinks. Avoid sugar alcohols, dairy if lactose-sensitive. Reintroduce regular foods slowly.
Constipation
CommonAffects ~24% of users. Caused by reduced food and water intake plus slowed motility.
Nutrition fix
25–35 g fiber daily, prioritizing soluble fiber (oats, chia, psyllium). Hit 2.5+ L water daily. Daily walking. Magnesium citrate (300–400 mg) before bed if needed (consult physician).
Lean muscle loss
Very commonCan reach 30–40% of total weight lost without protein and resistance training. Wegovy's higher dose (2.4 mg) and longer-term use make this a major risk.
Nutrition fix
1.4–1.6 g protein per kg per day. 25–35 g per meal across 3–4 eating occasions. 2–3 resistance training sessions weekly with progressive overload. Track grip strength weekly.
Vomiting
CommonAffects ~24%. Triggered by overeating, fatty meals, or alcohol.
Nutrition fix
Eat slowly, stop at fullness, no fluids during meals. Avoid alcohol (compounds nausea and dehydration). Time injection at end of day if possible.
Hair thinning
CommonReported in ~3% of trial patients, but real-world rates higher. Tied to rapid weight loss and possible nutrient deficiencies.
Nutrition fix
Hit protein target consistently. Get B12, iron, vitamin D, zinc levels checked. Consider biotin and collagen if labs show deficiencies.