[header] How to treat tachycardia with home remedies [title] Avoid caffeinated food and beverages. [step] Stimulants like caffeine can exacerbate the symptoms of tachycardia. Caffeine contains chemical compounds that increase your level of alertness. 
It does this by stimulating the central nervous system and cerebral cortex of the brain, which causes vasodilation of your blood vessels. This can increase your blood pressure, which in turn can affect the electrical conduction in your heart, leading to rapid heartbeats.