Hello Doctor, I Have Been On Eltroxine 100 Since 2

Hello Doctor, I have been on Eltroxine 100 since 2 years now and have been getting major hyperpigmentations on my face ever since. Its is getting pretty bad fast. I was wondering if I should try an alternative medicine to Eltroxine ..would that help ? I am 50 and I have had Radio active iodine treatment done 3 years ago...after which I have had Hypothyrodism ,

Thank you for your kind help