Anxiety disorder n drug abuse. Relief.

My brother had anxiety since 2 years along with insomnia Now it is raised up at a high level He couldn't sleep ... whenever he closes eyes.problm begins He got tremers everytym He always put earphones for song to divert his mind He suffers from headache also... His BP goes on very high n sometym normal.. When problem occurs more his BP raises very high ..190/130 Due to that he had chest pain also... He forgets many things ,unable to concentrate in anything... Takes tention a lot ... sometimes cry when he lose hope... He only says to me...that he suffers  from this promblm 24 hours.. everytym One more thing he had taken almost all type of drugs 2 year before in a large amount... But stopped that tym ... After that to control anxiety he had only taken cigreete n alcohol .. What to do...how he will get relief...??