Losartan increase

In late December I went from 50mg to 100mg a day. From January to now; I have days where I feel like I could nap at any point of the day. And I noticed my resting heart rate go from the 58-65 area to 48-55. And my sleeping rate will be 40-50. Can losartan for this?

ps, when I run I can get my heart rate up fine, and days I get active in the morning I generally don’t see a hr lower than 55