 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  pharmacist before you start taking frovatriptan and each time you get a refill. If you have any questions, ask your doctor or pharmacist. Take this medication by mouth as directed by your doctor, at the first sign of a migraine. It may be taken with or without food, but may work faster when it is taken on an empty stomach. The dosage is based on your medical condition and response to treatment. If there is no improvement in your symptoms, do not take more doses of this medication before talking to your doctor. If your symptoms are only partly relieved or if your headache comes back, the U.S. manufacturer recommends that you may take another dose after 2 hours, up to a maximum of 3 doses (7.5 milligrams) in a 24-hour period. The Canadian manufacturer recommends that you may take another dose after 4 hours, up to a maximum of 2 doses (5 milligrams) in a 24-hour period. Carefully follow your doctor's directions for using this medication. If you have a higher risk for heart problems (see Precautions), your doctor may perform a heart exam before you start taking frovatriptan. He/she may also direct you to take your first dose of this medication in the </s>