LaniR304

Twice a day, I take Metoprolol (either 12.5mg or 25 mg depending on how I feel). I have been told that my heart itself if fine, but I have some sort of metabolic disorder that affects my heart. I am set to have an event monitor put on Monday (had one a few years ago). Whatever it is, I end up with palpitations and tachycardia. I live in Arizona, so the summers I tend to get worse with the heat. I just spent 5 days in the midwest where the temps were much cooler than at home, so really didn't have too much off a problem.
Today, I remembered I needed to take my medicine because I was feeling a little tachy after climbing the stairs, so I took 25mg. A few hours later after eating lunch, I was told that my lips were blue. It was a little cool in the restaurant, enough that I had goosebumps, but my hands really didn't feel cold--and they are frequently cold. I looked in the mirror and at least 50% of my lips were blue, I looked at my fingers and they looked a little dusky, but instead of being like an ice cube, they felt relatively normal.
I have never had my lips turn blue (except for last summer while having an asthma attack). My breathing was fine, so I know my asthma wasn't involved.
Curious what may have happened. I did not have any symptoms at the time--other than the blue lips. I'm not sure how long it lasted, as I put lipstick on to cover it a bit--the young kids that I was with noticed it first, so it was quite prominent...and I had not eaten anything that was "blue".