Optimum Nutrition Gold Standard 100% Whey
Muscle loss alongside fat loss is one of the most consistently reported concerns with GLP-1 receptor agonist use, largely because appetite suppression reduces total food and protein intake, not just fat intake specifically. A concentrated protein source that doesn’t require eating a large meal volume is one of the most practical, well-evidenced ways to address this.
Gold Standard Whey is included here not because it’s unique to this space, but because protein quantity and consistency matter more than brand for this particular goal — it’s a reliable, widely available, well-tested option for hitting protein targets on a reduced appetite, whether during GLP-1 therapy or in the maintenance period afterward.
Pros
- One of the most independently-tested protein powders on the market, with a long track record
- High protein-per-serving relative to volume — relevant for people eating smaller portions
- Wide flavour range makes it easier to sustain daily use
Cons
- Whey concentrate base means more lactose than an isolate — worth checking if you're sensitive
- Large tub sizes require the same reduced-appetite consideration as food itself
- Flavoured versions contain artificial sweeteners, which not everyone tolerates well