Amiodarone belongs to the third class of antiarrhythmic drugs, and its dosage is usually given as a loading dose of 0.2g once, then three times a day, and then changed to 0.2g per dose after a week of taking it. Twice a day, then after taking it for a week change to 0.2g once a day maintenance dose. According to the efficacy 3-6 months can be gradually changed to 5-6 times a week, or every other day, 0.2g each time. for severe fatal arrhythmia loading dose can be increased to 800mg per day, weight can be increased roughly as appropriate, for intravenous administration, in fact, it is up to Ketorolone, its loading dose is 3-5mg/kg, it is diluted with 5%-10% glucose after 5-10 minutes It is injected with 5%-10% glucose diluted within 5-10 minutes, and the dose can be repeated after 0.5-1 hour. After the effect is achieved, the maintenance dose of intravenous drip is usually 0.5-2mg per minute, and the dose can be adjusted according to the efficacy for 3-5 consecutive days. Excessive doses can have an inhibitory effect on myocardial contractility. So the usage of amiodarone is basically this detailed usage.