Welcome, as an Internist I will try to answer your Medical Question, for informational purposes only, please see your doctor as needed.
Hello. I could be that the losartan is contributing to your sense of fatigue. In studies, the incidence of fatigue on Losartan is reported at 15%, which is higher than that reported for calcium channel blockers like verapamil.
as you mention palpitations, I would ask about your anemia, is your low iron contributing to your sense of fatigue?
as you are offline, please get back to me to discuss Dr Frank t