Assertion: caffeine | /r/CapableOf | ring in ear
Facets:
Source sentences:
text: At higher than recommended doses, caffeine can cause excitement, agitation, anxiety, confusion, a sensation of light flashing before the eyes, unusual sensitivity to touch, unusual sensitivity of other senses, ringing in the ears, frequent urination, muscle twitches or tremors , heart arrhythmias, rapid heartbeat, flushing, and convulsions.