Am 154cm tall @19 years and i want to play basketball so their allowing only players it 6 feet and above and i need recommendations on best medications to take or injection to grow taller?

There are no medicines that will make you grow taller. The best guess as to how tall you will get is to average you parents height and add maybe 2 inches. So your basketball career must rely on speed and accuracy. I guess those making the 6 feet or more have never Googled famous short basket ball players such as Mugsy Bougues at 5'3". Show then the list and how good your are.

The facts are you cannot grow taller after your growth centers close. An x=ray of your wrist/hand can be assessed for growth centers. In most males they close by 18. If closed you are done. No injection/diet/exercise or anything else you could try will change that.