Welcome to PC!

Even medicated, MH (mental health) can cause tension and arguments. Medication is not a fix for problems or relationships. It can help sometimes. However, BOTH parties have to do what's right for them and to do self care, to encourage this for self and each other, to evaluate things, and to work on the relationship, medicated or not, if that is what they want mutually in the end. If not and otherwise, one has to consider self-preservation. It can be helpful to find someone to talk to about this, possibly finding a provider in your area for support,either individual or couples therapy.