PT  - JOURNAL ARTICLE
AU  - Koller, William
AU  - Cone, Sandra
AU  - Herbster, Gregory
TI  - Caffeine and tremor
AID  - 10.1212/WNL.37.1.169
DP  - 1987 Jan 01
TA  - Neurology
PG  - 169--169
VI  - 37
IP  - 1
4099  - http://n.neurology.org/content/37/1/169.short
4100  - http://n.neurology.org/content/37/1/169.full
SO  - Neurology1987 Jan 01; 37
AB  - 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, 3, or 3 hours after ingestion. Caffeine only infrequently induces tremor in normal people, and it does not exacerbate pathologic tremor.