I m a 46 year old female with HTN. I take Amlodipine 5mg qd, Lasix 20mg every other day, allopurinol 200 mg qd, potassium10 meq twice day. yesterday when i came from work i could hardly stay awake, i wasn t tired on my way home. then this morning I wake up with nausea. all day I was fighting with nausea, it would come and go. i m not sick, i dont have any other symptoms. what would cause my nausea and fatigue.