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A 22-year-old female asked:

If you have a high heart rate and muscle twitching will you be ok? its been about an hour since the last drink of caffeine and it got better for a min

2 doctor answers5 doctors weighed in
Dr. Shahid Rafique
Internal Medicine 45 years experience
Don't worry: Spontaneous muscle twitching is a normal phenomena. Increase in pulse rate is also normal after using caffeine or other stimulants including emotional situations.
Dr. Donald Colantino
Internal Medicine 62 years experience
Fast rate: It takes longer than an hour for the heart rate to return to normal(55 -90) if a significant amount of caffeine was ingested.. Alcohol also affects the heart rate. For some people 55 is a normal rate and for others, 90 would be normal.

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Last updated Nov 27, 2014

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