Which sports supplement is known for causing a tingling sensation on the skin?

Beta alanine is known for causing a tingling sensation on the skin, a phenomenon referred to as paresthesia. This effect occurs because beta alanine increases the levels of carnosine in the muscles, which helps buffer acid in muscle tissue during high-intensity exercise. The tingling sensation is more pronounced when higher doses are consumed and is generally considered harmless.

In contrast, citrulline malate is primarily known for its role in enhancing blood flow and reducing muscle soreness, and it does not typically cause skin sensations. Caffeine is a stimulant that mainly affects energy levels and focus rather than producing a tingling sensation. Creatine monohydrate is primarily used for enhancing strength and muscle mass, without causing a tingling effect on the skin. Thus, beta alanine is distinct for its characteristic paresthesia, making it a unique supplement in this context.