• Basic Info
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How should I take promethazine oral?

Take this medication exactly as it was prescribed for you. Do not take the medication in larger amounts, or take it for longer than recommended by your doctor. Follow the directions on your prescription label.

Take each dose with a full glass of water.

You can take promethazine oral with or without food.

To be sure you get the correct dose of promethazine oral syrup, measure the liquid with a marked measuring spoon or medicine cup, not with a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one..

Store this medication at room temperature away from moisture and heat.

What happens if I miss a dose?

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at the next regularly scheduled time. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention if you think you have used too much of this medicine.

Overdose symptoms include severe drowsiness, dizziness, dry mouth, large pupils, flushing, nausea, vomiting, shallow breathing, and fainting.

What should I avoid while taking promethazine oral?

Promethazine oral can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert. Avoid drinking alcohol, which can increase some of the side effects of promethazine oral. Cold or allergy medicine, narcotic pain medicine, sleeping pills, muscle relaxers, and medicine for seizures, depression or anxiety can add to sleepiness caused by promethazine. Tell your doctor if you regularly use any of these medicines, or any other antihistamine.

What are the possible side effects of promethazine oral?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using promethazine oral and call your doctor at once if you have any of these serious side effects:

• twitching, or uncontrollable movements of your eyes, lips, tongue, face, arms, or legs;

• shallow breathing, weak pulse;

• hallucinations (seeing or hearing things);

• nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes); or

• fever, muscle stiffness, confusion, fast or uneven heartbeat, sweating, fainting.

Less serious side effects may include:

• dizziness, drowsiness, sleepiness, or confusion;

• blurred vision, dry mouth;

• ringing in your ears;

• mild nausea or vomiting; or

• increased sensitivity to sunlight.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.

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