Read the Medication Guide provided by your pharmacist before you start taking lasmiditan and each time you get a refill. If you have any questions, ask your doctor or pharmacist.

Take this medication by mouth with or without food as directed by your doctor, usually at the first sign of a migraine. Swallow the tablets whole. Do not split, crush, or chew the tablets. Doing so may increase the risk of side effects. The dosage is based on your medical condition and response to treatment. Do not take more than one dose of this medication in a 24-hour period. Tell your doctor right away if your symptoms do not get better or if they get worse. Do not drive, use machinery, or do anything that needs alertness for at least 8 hours after taking this medication.

Rarely, abnormal drug-seeking behavior (drug abuse) is possible with this medication. Do not increase your dose or use it more often than prescribed. Properly stop the medication when so directed.

If you are using drugs for migraine attacks on 10 or more days each month, the drugs may actually make your headaches worse (medication overuse headache). Do not use medications more often or for longer than directed. Tell your doctor if you need to use this medication more often, or if the medication is not working as well, or if your headaches get worse.