Lamictal/Lithium and Hair Loss?

I have been taking Lamictal and Lithium for bipolar disorder for the past five years. I have had good success with these medications and want to continue taking them. The only problem is that I have lost a noticeable amount of hair since I began taking them. Has anybody else had this problem? Did you find a way to deal with it? Have any supplements been effective? I'm sure the medication is making me lose the hair because I noticed hair falling out just a few months after beginning the regimen. The reason I want to keep taking these particular medications is that I have been diagnosed for about 20 years and this is the longest period of stability I have experienced. It seems like I have tried almost every possible drug and combination of drugs and this is the best for me.