What to eat on Mounjaro 15 mg at 92 kg

What is different about this dose

Fifteen milligrams is the maximum licensed tirzepatide dose and it produces the widest gap between target and ceiling anywhere in this model. The two numbers below are several hundred calories apart, which is not a rounding error, it is the central fact of eating at this dose.

This is the situation the whole site was built for. Nobody at 15 mg is struggling to eat less. The risk running quietly underneath a very large gap is months of intake far below what the body needs, with nothing complaining, while a meaningful share of what comes off is lean tissue rather than fat. That is why the protein figure is the one to defend and the calorie figure is the one to stop looking at.

The target against the ceiling

The ceiling sits 544 kcal below the target here. That is the medication doing what it was prescribed to do, and it means the calorie figure above is describing a day that is unlikely to happen. The protein figure is the one that is still under your control, so it is the one to treat as the job.

How the numbers were worked out

1. 1. What you burn at rest1,592 kcal

   10 x 92 kg + 6.25 x 166 cm - 5 x 41 - 161

   The energy your body spends staying alive before you move at all. Everything else is built on top of this number. Mifflin MD et al. A new predictive equation for resting energy expenditure. Am J Clin Nutr, 1990.

2. 2. What you burn in a day2,189 kcal

   1,592 x activity multiplier for "light"

   Your resting burn scaled by how much you actually move. Training type nudges it too, because muscle costs more to carry.

3. 3. Your daily target1,639 kcal

   2,189 - deficit for 0.5 kg a week, floored at 1,200

   The deficit you asked for, capped by a floor we will not go under. Below the floor you stop losing fat and start losing muscle.

4. 4. What you are likely to manage1,095 kcal

   No medication reported, so no suppression applied

   This is the number no other calculator gives you. Appetite suppression on a GLP-1 is dose dependent, so the more the dose climbs the further your real intake falls below your target. Blundell J et al. Effects of once-weekly semaglutide on appetite, energy intake and control of eating. Diabetes Obes Metab, 2017.

5. 5. Your protein floor129 g

   1.8 g per kg of 72 kg adjusted body weight

   Up to about 40 percent of the weight lost on these drugs can be lean mass. Protein and resistance work are the only two levers that change that, and protein is the one you control at every meal. Arslan S et al. Medical nutrition in the GLP-1 era: protein strategies and lean mass. Clin Nutr ESPEN, 2026.

6. 6. Fibre, fats and fluids28 g fibre, 8 glasses

   Fat at 25% of 1,639 kcal, carbs take the remainder

   Constipation is the side effect almost everyone gets and almost nobody plans for. Fibre without fluid makes it worse, so the two move together.

Three days of food at these numbers

Built to the figures above, protein first at every meal. Portions are a starting point; the protein total for the day matters more than any single one of them.

The one thing to take from this

At the top tirzepatide dose the calorie target is close to theoretical. Treat the protein figure as the day's actual job, take it in three or four small hits rather than one large one, and raise a persistently very low intake with your prescriber rather than treating it as progress.