Gold standard - Pre-workout (1 scoop), arginine capsules - pilln (1 pilochtendvoorsportenslapen) and L Carnitine (Muscle Blaze) (1 Serving)

Check the pre-workout and capsule labels for added sugars, maltodextrin, dextrose, flavoring blends, or carbohydrate-containing fillers; choose plain, unsweetened single-ingredient versions where possible.

Test each product separately on different days rather than stacking arginine, pre-workout, and L-carnitine, so you can identify which ingredient or formulation is driving the rise.

Avoid taking the supplements with sweetened drinks, juice, sports drinks, or carbohydrate-heavy pre-workout mixes; use water instead.

Consider a smaller dose or splitting the dose, especially for the pre-workout, and reassess your glucose response before increasing it.

If taking supplements while fasting causes the response, try taking them alongside a balanced meal that includes protein, fiber, and fat rather than taking them alone.

Review the pattern with a clinician or pharmacist if spikes are repeated, substantial, or you use glucose-lowering medication; stimulant-containing pre-workouts can also affect glucose indirectly.