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.
Accompanying Symptoms. You can usually determine that your aching teeth are related to the flu and sinus rather than dental care by looking out for other symptoms. Sinus toothaches usually come with tenderness in the cheekbone and gums, throbbing headache, fatigue, and a runny nose.nlike a common cold, the flu is caused by an influenza virus that infects the airway tract in the nose and throat. Symptoms of the flu can include fever, weakness, coughing, headache, and achesâsometimes even in the teeth. 1  Things That Make Toothaches Worse. 2  How to Alleviate Tooth Pain Caused by Sinuses.