Yes. Usually would present no problem.
Will METOPROLOL TAB 25MG ER interfere with my birth control pill, sprintec? Should I be using another form of birth control?
Birth control. It shouldnt.
I had unprotected sex on Saturday. I'm not on birth control. Can I take the morning after pill with my Lisinpril and Metoprolol? And is it effective?
Yes. There are different formulations. I assume you're using levonorgestrel/ethinyl estradiol? There are no interactions among the 3 meds you list. (you can use them together). The med is maximally effective if you take it within 72 hours of intercourse.
Does Metoprolol affect birth control or cause irregular periods? Have had a longer stopping/restarting period this cycle. I'm on Sprintec birth control
No. Metoprolol is used to reduce your blood pressure but has no known effects on your period.