Originally Posted by SpmnE9zero
Most test boosters are not going to boost enough to build visible muscle.
Test boosters are really only good for one thing - boosting levels back to natural state after running a steroidal cycle.
These types of test boosters don't really do too much except help along with a proper PCT. And at your age of 21, you need to take advantage of what your body is producing naturally! Spmn hit some good points! Listen to what he outlined in this thread.