So I've been on 75mcg of Levothyroxine since June 2016 and I was diagnosed as hypothyroid 16 years ago. My symptoms have been getting worse and worse. I've been to see Professor C in London and Dr P and they both think that Levothyroxine on its own isn't working. Professor C is being more cautious probably because I didn't react well to the Adrenavive iii adrenal support that was recommended for me by Dr P and thinks I should spend six weeks on Selenium 200mcg retest and then start NDT or T3. However, I'm a complete mess and I want to at least start preparing to take T3. I'm also not sure if I can wait another 5 weeks either. Dr P on the other hand wants me to start immediately. I think Professor C is veering more towards NDT because of the cost of T3. I don't plan on getting it from his private clinic due to the cost and I understand I can buy it from other sources and I've been sent details for Greece from a forum member.
What strengths do the tablets come in? What brands do people prefer? Do I need to lower Levo and then start T3? How much should I start off with? Do you take it with Levo? How do you know when to increase the dosage? Also why do some people take just T3?
I'm completely new to this and would appreciate any advice, thank you.