 , Adenosine, antagonists & inhibitors , Agents producing tachycardia , Alkenes , Analgesics , Antiarrhythmic agents , Antiarrhythmics, Class V , Biological Factors , Carbohydrates , Cardiac Therapy , Cardiovascular Agents , Central Nervous System Agents , Cyclohexanes , Cyclohexenes , Cycloparaffins , Glycosides , Heterocyclic Compounds, Fused-Ring , Hydrocarbons, Acyclic , Miscellaneous Cardiac Drugs , Miscellaneous Therapeutic Agents , Moderate Risk QTc-Prolonging Agents , Neurotransmitter Agents , Nucleic Acids, Nucleotides, and Nucleosides , Nucleosides , Peripheral Nervous System Agents , Polyenes , Purine Nucleosides , Purinergic Agents , Purinergic Agonists , Purinergic P1 Receptor Agonists , Purines , QTc Prolonging Agents , Ribonucleosides , Sensory System Agents , Terpenes , Vasodilating Agents