If I have concerns about medication interactions I’ll ask the pharmacist at my local LGBT health center. The odds of there being a medication only cis men can take (for reasons other than fetal health) or that the dosage is going to be drastically different because of my sex rather than my hormonal profile, medications, and weight is vanishingly small.
I assume by "cis men" you mean "biologically male" (roughly including trans women?), and while this is an idea that hasn't been revised much in the hospitals, that idea is a bit broken and scientists have moved on from the idea of "biologically male/female", either way - what I was wondering is what even is an example of such a medication? I don't know of any medication that would be so different for men vs. women that a trans woman would need to be treated differently than cis women.
Generally the drugs that metabolize differently (or are dosed differently) between sexes (broadly speaking) are going to be the same whether you are a cis or trans woman (assuming the trans woman is on estrogen), because estrogen seems to mediate a lot of those differences.
Can you think of an example? I don't know of any!