I have been taking Losartan 50 mg per day for about 4 weeks. I find myself feeling weak, sleeping for 12 to 15 hours per day, loss of appetite, quick weight loss, nauseous and light throwing up. Should I lower my dosage say to 25 mg per day, or stop all together. I am a 46 year old woman, never had children, I am 5'8" and at this point probably weigh 145. I do also take 40 mg of Prozac per day and 1 mg of Klonipin per day as well as Norethindrone .35 mg tablet per day.