Weight Loss Shakes: What to Know When You're on Mounjaro or Wegovy

Many people on Mounjaro or Wegovy find that appetite drops significantly, which can make it harder to hit daily protein targets through food alone. A well-chosen protein shake can help fill that gap without requiring a large meal.

Protein content

Protein is the nutrient most worth prioritising on a GLP-1 journey. It supports muscle retention as weight changes, helps maintain satiety, and is often under-consumed when appetite is suppressed. Many people find that aiming for a shake providing 20–30 g of protein per serving is a reasonable starting point, though your personal target should be guided by your prescriber or a registered dietitian.

Ingredients to pay attention to

• Added sugars: high-sugar shakes can work against steady energy and calorie targets — check the nutrition label and compare options.
• Fibre: a modest amount of fibre can aid digestion, which is useful given that GLP-1 medicines slow gastric emptying. Very high-fibre options may feel heavy for some people.
• Fat content: some fat supports satiety and nutrient absorption; very high-fat shakes may sit uncomfortably when stomach emptying is already slower.
• Artificial sweeteners and lactose: some people on GLP-1 medicines find these trigger nausea or digestive discomfort — if that applies to you, a simpler ingredient list or a vegan weight loss shake (typically pea or rice protein-based) may be better tolerated.

Shakes versus whole foods

Shakes are a convenient tool, not a replacement for a varied diet. Whole foods bring micronutrients, texture, and satiety signals that a shake alone cannot replicate. Think of a shake as a back-up when a meal feels like too much — not as the foundation of every day. For more ideas on building a nourishing routine around your GLP-1 treatment, take a look at our guide to fruit-based shakes for weight loss and how they can work alongside your meals.

It is also worth knowing that progress on a GLP-1 journey is rarely linear. Shakes, meal composition, and calorie intake all interact with how your body responds week to week — which is why tracking the full picture matters. Our broader weight loss on GLP-1 medicines guide covers the wider context of what influences results.

Knowing whether your shakes are actually contributing to your goals is hard without data. GLP Trackr's AI food photo scan lets you log a shake in seconds — point your camera at your glass or the packet, and the app breaks down calories, protein, and macros automatically. You can also search by name or scan a barcode, so whatever format your shake comes in, logging it takes moments even on a low-appetite day.

Beyond individual meals, the app's weight and progress tracking brings the bigger picture into focus. Log your weight, measurements, and daily check-in (mood, energy, food-noise levels, sleep) and GLP Trackr builds a week-by-week view of how your body is responding. If you notice your progress has stalled — a common experience that often has nothing to do with effort — the insights feature helps you spot correlations between what you're eating, how you're sleeping, and how the scale is moving, so you can have a more informed conversation with your prescriber or doctor.

You might also find it useful to explore how berberine relates to weight management as additional context for your journey — though any decisions about supplements should always be discussed with your healthcare professional first.

GLP Trackr is not a substitute for clinical advice. If you have questions about your diet, protein targets, or how your weight progress is going, your prescriber or doctor is the right person to ask — and the app's data makes those conversations much more productive.

Ready to see your nutrition and progress in one place? Download GLP Trackr on the App Store or Google Play and start your free 7-day trial today.