JUST ABOUT ANY PRESCRIPTION DRUG CAN CAUSE A HEADACHE
The fewer prescription drugs you take, the healthier you’ll be.

You’ll notice that just about every class of drug is included on this list. Prescription drugs are one of the leading causes of headaches. As soon as you take more than one prescription drug you start to get drug interactions and increased side effects, which increases your chances of having a headache. Even a drug prescribed to treat headache pain can cause a headache, especially if you’re trying to withdraw from it. One of the great truisms of conventional medicine is that the fewer prescription drugs you take, the healthier you’ll be.

Allergy drugs
Antacids
Anti-anxiety drugs
Antibiotics
Antidepressants
Anti-diarrhea drugs
Antifungals
Asthma drugs
Bisphosphonates
Blood pressure-lowering drugs
Calcium channel blockers
Cortisone-type drugs
Cough and cold remedies
Diabetes
Digitalis drugs
Estrogen
Eye drops
H2 blockers for indigestion and heartburn
Herpes drugs
Insomnia drugs
Nitrates (nitroglycerin drugs)
Pain killers
Progestins

For detailed information on the side effects of prescription drugs, please read Prescription Alternatives.