If you take 200mg of amiodarone for 3 months and 100mg for the next 3 months when will it be out of your system?

Weeks-months: Amiodarone is one of those antiarrhyhtmic drugs with a long 1/2 life (average of 50 days, range 30-100 days). So depending on whether you were front loaded or not, that you have been on it for 6 months, it is likely going to take a good 3 months for all drug to be out of your system. It is hard to predict reliably, because of its accumulation in fat tissue, etc....