Free Nutrition Guide

GLP-1 Nutrition Guide: Eating Right on Zepbound, Wegovy & Ozempic

GLP-1 and GIP medications (Zepbound, Wegovy, Ozempic, Mounjaro, Saxenda) suppress appetite so effectively that most people accidentally under-eat protein and fluids — which risks losing muscle instead of fat. Here's how to eat on these medications to protect your metabolism.

Why standard nutrition advice doesn't apply on GLP-1

Every calorie deficit — medicated or not — costs you some muscle along with fat, unless you deliberately protect it. On GLP-1 medications this risk is higher, because appetite suppression can push total intake (and protein specifically) far below what's needed, and weight loss often happens faster than on diet alone. Losing muscle instead of fat slows your metabolism, undermines long-term results, and is largely preventable with the right macro targets.

1. Raise your protein floor

Standard nutrition guidance targets around 30% of calories from protein. On a GLP-1 medication, that's not enough. Clinical guidance for GLP-1 patients generally targets:

• ~1.6g of protein per kg of body weight (roughly 0.7g per lb) as a daily floor
• ~35% of total calories from protein once you're also in a calorie deficit
• Protein spread across 3–4 smaller meals, since large meals are harder to tolerate on GLP-1s

VITAOS automatically raises your protein target to 35% of calories the moment you select a GLP-1 medication in the calculator, instead of leaving you to do this math by hand.

2. Don't let your calorie floor crash

Appetite suppression can push daily intake well below your Basal Metabolic Rate (BMR) — the minimum your body needs just to function. Consistently eating under BMR triggers adaptive thermogenesis (your metabolism slowing to compensate), which works against you long-term. A safe floor is generally no lower than about 90–95% of your calculated BMR, even on medication.

3. Hydrate deliberately, not by thirst

GLP-1 medications slow gastric emptying, which both causes the "fullness" effect and can dull normal thirst signals. Practical guidance:

• Add roughly 2 extra glasses of water per day beyond standard targets (about half your body weight in ounces)
• Sip steadily through the day rather than drinking large volumes at once, which can worsen nausea and bloating
• Electrolytes (sodium, potassium, magnesium) matter more than usual if appetite is very low

4. Time meals around GI tolerance

Because gastric emptying is delayed, large or high-fat meals are more likely to cause nausea or reflux. Smaller, protein-forward meals eaten slowly are generally better tolerated than three large meals.

5. Track injection site and adherence, not just food

Rotating injection sites (abdomen, thigh, upper arm) week to week helps prevent localized skin irritation and supports consistent drug absorption. Missing doses or inconsistent timing can also affect appetite suppression and side effects.

This guide is educational and not a substitute for medical advice. GLP-1 and GIP medications require a prescription and physician supervision — talk to your doctor or a registered dietitian before changing your diet, especially around protein and calorie targets while on these medications.