Hopefully others with experience can answer this one but I think it's best to ask your doctor. I did see the following warning for MSM but I think it was in relation to Methotrexate injection in oncology.

"Does MSM interact with methotrexate?
How the interaction occurs: When these two medicines are taken together, your body may not process methotrexate properly."
-- Methotrexate (Oncology-Injection)/Selected Salicylates Interactions:
https://www.webmd.com/drugs/2/drug-64167/msm-glucosamine-complex-oral/details/list-interaction-details/dmid-2574/dmtitle-selected-salicylates-methotrexate-oncology-injection/intrtype-drug