I am on Armour Thyroid now for several years. Just bought some generic Rogaine for women and after reading the "warnings" it stated that if you have hypothyroidism you should not use minoxidil. Ugh! But on this forum I see other women using it and seem to have no problem. I was really looking forward to using this stuff. I know that most of the time contraindications/warnings tell every single, possible little sided affect (even in less than %1 results) to cover themselves legally.