s once a week).. I am on other medications such as Lamictal for Bipolar II, Synthroid for hypothyroidism, and Zantac
- for possible stomach ulcer.. I read under the Lamictal interactions, that I should notify my doc if I am taking methotrexate.. what interaction do they have? And also, I read under methotrexate that it can cause stomach ulcers, which I think I already have before even starting this med..