I'm breastfeeding to my one year old, is it safe for me to take met thathione.

Have you asked your doctor about it?

Yes!see your doctor cause this is serious.

And you also have to consider that what you are taking into your body is being passed to your baby. Do you really want to give your baby this? If you have been prescribed this, then please discuss this with your doctor, but personally for me, it would be a definite no.