It also can help reduce how often the headaches occur.

These headaches usually occur after pain medicine has worn off.

Nausea, headache and a feeling of being ill may also occur.

When headaches do occur, they are milder and pass more quickly.

Another symptom is the eyes being sensitive to light, especially when headaches occur.

Headaches caused by the drug tend to be mild and can occur in any region of the head.

In such cases, rebound headaches may occur if you suddenly stop using this medication.

Headaches, which resolve in 24-48 hours, can occur, but this is rare.

How often do the headaches and/or other symptoms occur?

The headaches can last anywhere from 15-180 minutes and, in severe cases can occur many times a day.