Molecular target
Cardiac HCN Channel (If current)
Also: Funny Channel, Sinoatrial Node Pacemaker Channel · id HCN_CHANNEL
Pacemaker channel responsible for the spontaneous depolarization phase of sinoatrial node action potentials. Selective inhibition (ivabradine) slows heart rate without affecting contractility — basis for chronic angina and HFrEF heart-rate control.
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Pharmaceutical agents
Drugs that act on Cardiac HCN Channel (If current)
These medications have Cardiac HCN Channel (If current) among their molecular targets. Sharing a target is a mechanistic relationship — it does not make any plant below an alternative to, or substitute for, these drugs.