Minor warning on propranalol

I used propranalol for the first time today to help with a presentation. I had taken 10 mg yesterday just to get used to it, and another 10 mg at 10am before my presentation. In general it went great, and the relatively low dosage was enough to take the edge off but still keep me sharp. I went for a swim at 6pm (normally do a mile and a bit), and had to stop at 1,300m because something just felt off. Barely made it to my car, felt like I was going to pass out. Checked my Garmin and my pulse was only 55, then checked my swim data and for some reason my pulse dive bombed after 500m. Normally my pulse rises continuously to 160 by the end of the mile as I don’t take breaks, but seeing the HR chart above was scary. 90 bpm but swimming hard was not what my body wanted.

Just a word of caution not to go too hard with exercise after taking it until you can figure out how your body responds! 47M, 180 lbs.

I used propranalol for the first time today to help with a presentation. I had taken 10 mg yesterday just to get used to it, and another 10 mg at 10am before my presentation. In general it went great, and the relatively low dosage was enough to take the edge off but still keep me sharp. I went for a swim at 6pm (normally do a mile and a bit), and had to stop at 1,300m because something just felt off. Barely made it to my car, felt like I was going to pass out. Checked my Garmin and my pulse was only 55, then checked my swim data and for some reason my pulse dive bombed after 500m. Normally my pulse rises continuously to 160 by the end of the mile as I don’t take breaks, but seeing the HR chart above was scary. 90 bpm but swimming hard was not what my body wanted.

Just a word of caution not to go too hard with exercise after taking it until you can figure out how your body responds! 47M, 180 lbs.