If you're talking about artificial testosterone (aka steroids) then yes, it can have horrible effects on someone your age. If you're talking about a testosterone booster...which is something legal and you can find anywhere, then the side effects will be mild. You also won't see any results at your age...just a boost in libido...which means you'll be even more horny. Probably not much in the way of strength gains that you would be able to credit to the testosterone booster. Waste of money..............