I gave this up years ago but I still keep hearing about the benefits would you try?
Does green tea affect thyroid medication?
While green tea contains significantly less caffeine than coffee, it still supplies 30 mg to 40 mg per cup. 4 Caffeine is known to inhibit proper absorption of the common thyroid hormone replacement drug levothyroxine. If you are taking this medication, it's best to wait 30 minutes before consuming green tea.