Is phenibut safe to use and effective for anger and also legal to buy?

Probably, no, maybe: It probably meets standard criteria for safety, provided it is not obtained on the black market, is prescribed and supervised by a physician for an established use, and is taken as prescribed. It is probably not effective to manage inappropriate anger. Legal? Local laws vary. You probably should take a different approach for anger.

Why take it?: Do you plan to take it for the rest of your lives? If not, it's best to learn how to manage your anger, don't you think? Please talk to your doctor and get to the root of your anger problem.