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What is the most important information I should know about tocainide?

Call your doctor immediately if you experience wheezing, coughing, difficulty breathing, chest pain, chest discomfort, worsening irregular heartbeats, a fever, a sore throat, a throat infection, a sore mouth, mouth ulcers, a rash, or unusual bruising or bleeding.

Do not skip doses or change your dosing schedule without talking to your doctor. Changing your schedule could make your condition much worse. Use caution when driving, operating machinery, or performing other hazardous activities. Tocainide may cause dizziness, drowsiness, or blurred vision. If you experience dizziness, drowsiness, or blurred vision, avoid these activities.

What is tocainide?

Tocainide affects the way that your heart beats.

Tocainide is used to treat serious irregularity in heartbeat patterns.

Tocainide may also be used for purposes other than those listed in this medication guide.

What should I discuss with my healthcare provider before taking tocainide?

Before taking tocainide, tell your doctor if you have

• any other type of heart disease or heart problem,

• liver disease, or
• kidney disease.

You may not be able to take tocainide, or you may require a lower dose or special monitoring during treatment if you have any of the conditions listed above.

Tocainide is in the FDA pregnancy category C. This means that it is not known whether tocainide will harm an unborn baby. Do not take this medication without first talking to your doctor if you are pregnant. Tocainide passes into breast milk. It is not known whether tocainide will affect a nursing infant. Do not take this medication without first talking to your doctor if you are breast-feeding a baby.

How should I take tocainide?

Take tocainide exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.

Take each dose with a full glass of water. Tocainide may be taken with food to lessen stomach upset. Do not skip doses or change your dosing schedule without talking to your doctor. Changing your schedule could make your condition much worse. Store tocainide at room temperature away from moisture and heat.