Answer:
This is achieved because the sodium channels have a refractory period following activation, during which they cannot open again. This ensures that the action potential is propagated in a specific direction along the axon.
Adults—0.1 milligram (mg) two times a day, taken in the morning and at bedtime. Your doctor may adjust your dose as needed. The usual dose is 0.2 mg to 0.6 mg per day, divided and given two times a day.
