i'm an 18 year old female, 5'8, 120lbs and took 1,000 mg per day for 5 months. pretty high dose for my size. I am now experiencing more hair loss than normal. I discontinued the drug 2 weeks ago and am waiting for the hair loss to subside.. I also experienced hair loss from claritin D 24 hour about 5 years ago. Maybe i'm just really sensitive to this side effect on different drugs. IF YOU HAVE EXPERIENCED THIS SIDE EFFECT PLEASE COMMENT