My Mother keeps feeling like she is going to faint, but only for a few seconds, and then it goes away only to return within the next 15 minutes or so. Her heart rate goes up to 103 right before this feeling, and then afterwords returns to 74 or so. She is 53 years old and took this months Boniva this morning. She also takes aspirin, norvasc, iron supplement which she just started this week, and insulin.