CONCERNED...

I have been with my boyfriend for 4 and 1/2 yrs. I love him so much but i get worried b/c he doesn't wanna take medicine and sometimes i do think he needs it to calm him down. He said the only thing that has ever helped him was ridillin and the dr took him off that when he turned 18.  They said once he became an adult he couldn't take it anymore. I really don't understand why they would take him off something that helped him. He is 29 now. I've talked to him about going to the dr and he gets upset with me. All i want to do is help him. Any suggestions on what i should do???