Gold Standard 100% Whey (Optimum Nutrition) (1 Serving) and Athletic Greens - Superfood Cocktail (1 heapedtablespooon(12g))

Mix the powders with water or unsweetened soy milk rather than juice, sweetened plant milks, or other carbohydrate-containing liquids.

Take the shake with a small portion of chia seeds, almonds, or plain Greek yogurt to slow absorption; keep added sweeteners and fruit out of the blend.

Check both labels for added sugars, maltodextrin, dextrose, rice syrup, or large amounts of rapidly absorbed carbohydrates; consider a simpler unsweetened greens powder and unflavored whey isolate if present.

Use a smaller serving of each product, or separate them by 30–60 minutes, then compare your glucose response to the combined shake.

Have the shake after a balanced meal rather than on an empty stomach, especially if you consistently see a spike when fasting.

Take an easy 10–20 minute walk after drinking it, if safe for you, and retest on separate days to identify whether one product is the main trigger.