Is taking testoesrone boosters bad for liver or any health issues and is taking gnu strength vitapak ok ?

Stop that stuff: There are no supplements or health foods that will boost testosterone. Testosterone can't be "boosted" and rarely would need it at your age. All those supplements are garbage. If any of them worked doctors would recommend them. If any of them worked there wouldn't be thousands on the market -- we'd only need one or two. Save your money and your health. Don't get medical info on tv or internet.