Quick answer
Make water your default, enjoy coffee and tea in moderation, use protein shakes to hit your target, and limit alcohol and sugary soda. Adequate fluids help with fullness, energy and the constipation many people experience.
Drink-by-drink
- Water — priority #1. See the water calculator.
- Coffee & tea — fine in moderation; keep them low-sugar.
- Protein shakes — an easy way to reach your protein target, especially on nausea days.
- Alcohol — best kept occasional; it hits harder and adds empty calories.
- Soda — limit regular; carbonation can worsen bloating.
- Sparkling water & unsweetened tea — great low-calorie ways to add variety.
Hydration tips
- Sip through the day rather than chugging large amounts at once.
- Keep a water bottle visible; flavor with fruit or cucumber if plain water is boring.
- Increase fluids if you are constipated or increasing fiber.
- Match caffeine and alcohol with extra water.
How much water do you need?
Get your daily target in ounces, cups and liters.
Frequently asked questions
What should I drink most on GLP-1?
Water. Adequate hydration supports fullness, energy and regularity. Add coffee, tea, protein shakes and sparkling water; limit alcohol and sugary soda.
Are protein shakes a good idea?
Yes — they are an easy, gentle way to hit your protein target, especially when solid food feels heavy.
Why am I so thirsty (or forgetting to drink)?
Reduced appetite can make you forget to drink, and some people feel more thirsty. Set reminders and keep water handy; hydration also helps with constipation.
Related pages
Scientific references
- U.S. Food & Drug Administration — Ozempic / Wegovy / Mounjaro / Zepbound prescribing information.
- USDA FoodData Central — nutrient data for common foods.
- American Diabetes Association — Standards of Care in Diabetes.
- Academy of Nutrition and Dietetics — protein and weight management guidance.
Track your GLP-1 journey with Calqulate
Set your protein and hydration targets, then keep them on track as your dose changes.
Medical disclaimer. This page is general nutrition education for U.S. adults, not individualized medical advice. GLP-1 medications affect people differently. Talk to your prescribing clinician or a registered dietitian before making significant diet changes — and seek prompt medical care for severe or persistent vomiting, signs of dehydration, or severe abdominal pain.