Stephen J. Schueler, M.D.

Abnormal Heart Rhythm Stimulants

Avoid common stimulants and substances such as:

Caffeine is a very common stimulant that is present in a variety of beverages. Avoiding caffeine is important for most people with cardiac arrhythmias.

Caffeine Content in Beverages
BeverageCaffeine Content
8 ounce cup (240 cc) of brewed (drip) coffee65 to 120 mg
8 ounce cup (240 cc) of instant coffee60 to 85 mg
8 ounce cup (240 cc) of decaf coffee2 to 4 mg
1 ounce (30 cc) of expresso30 to 50 mg
8 ounce (240 cc), brewed US tea25 to 110
8 ounce (240 cc), brewed imported tea24 to 31 mg
Instant iced tea9 to 50 mg
Caffeinated 8 ounce (240 cc) soft drink20 to 40 mg
Cocoa, 8 ounce cup (240 cc)3 to 32 mg
Chocolate milk, 8 ounce cup (240 cc)2 to 7 mg

Continue to Abnormal Heart Rhythm Stress

Last Updated: Nov 17, 2010 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Abnormal Heart Rhythm References
  1. Boullin J, Morgan JM. The development of cardiac rhythm. Heart. 2005 Jul;91(7):874-5. [15958352]
  2. Page RL. Clinical practice. Newly diagnosed atrial fibrillation. N Engl J Med. 2004 Dec 2;351(23):2408-16. [15575057]
  3. Rubart M, Zipes DP. Mechanisms of sudden cardiac death. J Clin Invest. 2005 Sep;115(9):2305-15. [16138184]
  4. Stieber J, Hofmann F, Ludwig A: Pacemaker channels and sinus node arrhythmia. Trends Cardiovasc Med 2004 Jan; 14(1): 23-8. [14720471]
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