no you can not take theraflu if you have high blood pressure and diabetes.

theraflu powder does it still work after expiration date

Theraflu

There are no known drug interactions between Theraflu and the birth control pill, patch, shot, ring, implant, or IUD.

Excedrin and Theraflu both contain acetaminophen, the pain-killing ingredient in Tylenol. Acetaminophen is very dangerous in high doses, and it's even more dangerous when alcohol is in your system. Combining Excedrin and Theraflu is therefore not a good idea.