Got a question for gopro concerning the 1-Test??? Cypionate and 4-Test??? Cypionate and 4-HT??? Cypionate from VPX. Cant the 1-test be done alone and give good results or should it be stacked with the other 2. Also, since the info, says they are active for up to 16 days, do you only take this product every 16 days? One other thing, are these injectable or oral? Sounds injectable but I may be wrong. thanks