Methadone

Most of these side effects will get better or go away as your child’s body gets used to the medication. Common side effects include:

• Dizziness or light-headedness (Rise slowly over several minutes from sitting or lying position).
• Drowsiness. Do not drive or operate heavy machinery if affected
• Constipation
• Nausea or vomiting

Inform your doctor if the side effects above become severe and bothersome.

 

Rare but serious effects may sometimes occur. Contact the doctor as soon as possible if any of the following are noticed:

• Allergic reactions: Skin rash, itching, difficulty in breathing, swelling of face, lips, tongue or throat
• Shallow breathing
• Severe dizziness or passing out
• Fast heartbeat
• Mental alteration
• Feeling extremely tired or weak
• Seizures (fits)

Avoid alcoholic drink.

Avoid taking grapefruit or grapefruit juice while taking this medicine.

Follow the directions on your medicine label and take the medicine exactly as directed. Do not take more or less than what is prescribed by your doctor. The dose for each patient is individually determined by the doctor.

Take the missed dose as soon as you remember. However, if you missed the dose for more than half the time interval (e.g. more than 4 hours for an 8-hourly dosing), skip the missed dose and take your medicine at the usual time. Inform your doctor if you missed 3 days or more of your regular prescribed dose. DO NOT take two doses at the same time to make up for a missed one.

In cases you or someone else may have taken an overdose of Methadone tablets, get an emergency help and call 995 immediately.

Signs and symptoms of overdose include cold clammy (pale) skin, confusion, seizures, severe dizziness (low blood pressure), severe drowsiness, severe nervousness or restlessness, slow or troubled breathing and severe weakness. Overdose can result in sudden death.

Keep away from children;#Keep in a cool, dry place, away from direct sunlight;#Store at room temperature;#

Inform your doctor or pharmacist if you are currently taking or intend to start any other medicines, supplements or herbal products.

What happens when you suddenly stop this medicine?

Do not stop taking Methadone without talking to your doctor. Stopping Methadone suddenly after taking it for a period of time may lead to possible withdrawal signs and symptoms such as sweating, chills, muscle pain, dilated pupils, irritability and insomnia. Your doctor may want to gradually reduce the amount of Methadone you are taking before stopping it completely. This is to lessen the chance of you developing these withdrawal symptoms.

Methadone is a Controlled Drug in Singapore. Please DO NOT share the medicine with others.​