hi! i have been taking thyrax for two months now and then the dosage that i have been taking went out of stock 3 weeks ago. since i was told by my doctor never to miss a pill for 3 months, i decided to take eltroxin of the same dosage. Is it okay to switch from thyrax to eltroxin? and is it okay to take paracetamol/ decongestant for my colds while taking eltroxin?