How much protein do you need on weight-loss medication?
On weight-loss medication, appetite can fade while protein still matters. This gives you one practical number to discuss and adapt.
How this is calculated
Your target is based on your body weight and activity level, using the protein ranges sports-nutrition research recommends for preserving lean mass in a calorie deficit — roughly 1.6–2.2g of protein per kg of body weight.
We also apply a minimum baseline — 90g for women, 120g for men — capped so your target never exceeds 2.2g per kg of your body weight, including the medication adjustment.
This calculator is for adults. The medication option adds a small adjustment within the same ceiling; it does not assess your treatment or predict muscle or weight changes.
This is an estimate to aim for, not medical advice. If you have kidney conditions or other health concerns, talk to your doctor about the right intake for you.
Track this target in Calo
Calo is a protein-first macro tracker for people whose appetite has changed, including anyone using GLP-1 medication. Set your target, then follow it meal by meal.
Free to download. Photo, barcode and text logging need Calo Premium, with a free trial for new subscribers. iPhone, iOS 18 or later.
Educational estimate, not medical advice. Calo is a nutrition tracking tool and is not a substitute for professional medical advice.