Thanks everyone for your replies/advice. Just wanted to give a quick update.

First off, he's on 900 mg. of lithium, not the 300 I first thought. I've spoken with him twice today, so at least we're talking again. He's decided to give the meds another month to see if he feels any different. Wouldn't go see his psychiologist today, but is keeping his appt. on Thurs. with his psychiatrist. Missed getting his bloodwork over the weekend, but we're going to try to get it 1st thing in the morning. I doubt his dr. will have it in time for the Thurs. appt., but maybe she'll have it before the weekend.

Poor guy is miserable....He said it's more the depression and aggitation/anger that are really getting to him. And, his paranoia, which he said is really bad. I noticed that the weekend before last when we went on a trip to my mom's. As soon as it was his turn to drive, he started getting so aggitated because he thought the WalMart truck behind us was "messing with him". He thinks everyone is messing with him.

I'm going with him to his appt. on Thurs. so I can share with the dr. what I've been seeing. I'd like to ask if she could put him on an antidepressant and also if there's another mood stabilizer that may work quicker for him either in addition to the lithium or in place of it. He said he feels like the klonopin isn't working well so maybe there will be something else that would work better?

He said when he was hospitalized, he was asked to pick one of two mood stabilizers. One that worked quicker but would cost more, or the lithium, which was cheaper. He chose the lithium becasue of the cost. I wish I would of been asked (because I'm the one paying the bills) because I would of chosen the one that works faster. But, of coarse, because he's 19, I'm not asked (but they send me the bills, go figure!) I HATE, HATE, HATE seeing my son like this.

Thanks for the advice about the weed. I'll back off.......

Just wanted to thank all of you for being there for me. I'm trying to get my son to join this forum because I think it'll really help him to know he's not alone. If you guys have anymore thoughts/advice, please bring it on. I'm all ears and really want to learn how to be there/help my son.