Optimum Nutrition Gold Standard Pre-Workout

The formula includes creatine monohydrate, beta-alanine, L-citrulline, acetyl-L-carnitine, N-acetyl-L-tyrosine, natural caffeine, and several B vitamins. Exact ingredients and amounts can vary by country and product revision, so the tub label is the final reference. [Optimum Nutrition](https://www.optimumnutrition.com/en-gb/products/gold-standard-pre-workout-powder-eu?variant=52105829581067)

Yes, the current European ingredient list includes natural caffeine. That means it is not a stimulant-free pre-workout, so users should account for other caffeine sources before taking a serving. [Optimum Nutrition](https://www.optimumnutrition.it/product/gold-standard-pre-workout)

Yes, creatine monohydrate is part of the Gold Standard Pre-Workout formula, alongside beta-alanine and citrulline. It is therefore a multi-ingredient pre-workout rather than a plain creatine product. [Optimum Nutrition](https://www.optimumnutrition.it/product/gold-standard-pre-workout)

Beta-alanine can cause a temporary tingling sensation, and beta-alanine is listed in this product’s formula. Follow the package serving instructions and ask a clinician before use if you have a medical condition or take stimulant medication. [Optimum Nutrition](https://www.optimumnutrition.it/product/gold-standard-pre-workout)