Caffeine and tremor

Neurology. 1987 Jan;37(1):169-72. doi: 10.1212/wnl.37.1.169.


Two percent of normal controls noted that drinking coffee made their hands shaky. Eight percent of essential tremor and 6% of Parkinson's disease patients thought that coffee worsened their tremor. In formal tests, a single oral dose of caffeine (325 mg) did not increase physiologic, essential tremor, or parkinsonian tremor at 1, 2, or 3 hours after ingestion. Caffeine only infrequently induces tremor in normal people, and it does not exacerbate pathologic tremor.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Caffeine / pharmacology*
  • Female
  • Humans
  • Male
  • Middle Aged
  • Parkinson Disease / physiopathology
  • Time Factors
  • Tremor / physiopathology*


  • Caffeine