Most medications do not prevent you from donating blood. Common medications such as those used to control blood pressure, birth control pills and over-the-counter medications do not affect your eligibility. If you have recently taken antibiotics, you must have completed the course prior to donating.
Yes, a tooth infection can cause a headache. Also, be aware that certain sinus conditions can mask as tooth problems.
Combined Root Canal And Gum Problems. I had a bad toothache and couldn't tell whether the pain was actually coming from my tooth or maybe my gum. Seems like it took my dentist a while to figure it out, too.