slo3

Quinine is a natural cinchona alkaloid that has been used for centuries in the prevention and therapy of malaria. Quinine is also used for idiopathic muscle cramps. Quinine therapy has been associated with rare instances of hypersensitivity reactions which can be accompanied by hepatitis and mild jaundice.

Quinine hemisulfate hydrate, an alkaloid extracted from the cinchona tree bark, serves as an anti-malarial agent and potassium channel inhibitor. It specifically targets and inhibits WT mouse Slo3 (K Ca 5.1) channel currents induced by voltage pulses to +100 mV, having an IC 50 value of 169 μM [1] [2].