METHADONE HYDROCHLORIDE- methadone hydrochloride tablet 



Methadone Hydrochloride Tablets USP CII

(METH a done)

Rx Only

Methadone hydrochloride is:

A strong prescription pain medicine that contains an opioid (narcotic) that is used to manage pain severe enough to require daily around-the-clock, long-term treatment with an opioid, when other pain treatments such as non-opioid pain medicines or immediate-release opioid medicines do not treat your pain well enough or you cannot tolerate them.

A long-acting opioid pain medicine that can put you at risk for overdose and death. Even if you take your dose correctly as prescribed you are at risk for opioid addiction, abuse, and misuse than can lead to death.

Not for use to treat pain that is not around-the-clock.

Also used to manage drug addiction.

Important information about methadone hydrochloride:

Get emergency help right away if you take too much methadone hydrochloride (overdose). When you first start taking methadone hydrochloride, when your dose is changed, or if you take too much (overdose), serious or life-threatening breathing problems that can lead to death may occur.

Never give anyone your methadone hydrochloride. They could die from taking it. Store methadone hydrochloride away from children and in a safe place to prevent stealing or abuse. Selling or giving away methadone hydrochloride is against the law.

Do not take methadone hydrochloride if you have:

severe asthma, trouble breathing, or other lung problems.

a bowel blockage or have narrowing of the stomach or intestines.

Before taking methadone hydrochloride, tell your healthcare provider if you have a history of:

head injury, seizures

liver, kidney, thyroid problems

problems urinating

pancreas or gallbladder problems

heart rhythm problems (Long QT syndrome)

abuse of street or prescription drugs, alcohol addiction, or mental health problems.

Tell your healthcare provider if you are:

pregnant or planning to become pregnant. Prolonged use of methadone hydrochloride during pregnancy can cause withdrawal symptoms in your newborn baby that could be life-threatening if not recognized and treated.

breastfeeding. Methadone hydrochloride passes into breast milk and may harm your baby.

taking prescription or over-the-counter medicines, vitamins, or herbal supplements. Taking methadone hydrochloride with certain other medicines may cause serious side effects.

When taking methadone hydrochloride:

Do not change your dose. Take methadone hydrochloride exactly as prescribed by your healthcare provider.

Do not take more than your prescribed dose in 24 hours. If you take methadone hydrochloride for pain and miss a dose, take methadone hydrochloride as soon as possible and then take your next dose 8 or 12 hours later as directed by your healthcare provider. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule.

If you take methadone hydrochloride for opioid addiction and miss a dose, take your next dose the following day as scheduled. Do not take extra doses. Taking more than the prescribed dose may cause you to overdose because methadone hydrochloride builds up in your body over time.

Do not crush, dissolve, snort or inject methadone hydrochloride because this may cause you to overdose and die.

Call your healthcare provider if the dose you are taking does not control your pain.

Do not stop taking methadone hydrochloride without talking to your healthcare provider.

After you stop taking methadone hydrochloride, flush any unused tablets down the toilet.

While taking methadone hydrochloride Do Not:

Drive or operate heavy machinery, until you know how methadone hydrochloride affects you. Methadone hydrochloride can make you sleepy, dizzy, or lightheaded.

Drink alcohol or use prescription or over-the-counter medicines that contain alcohol. Using products containing alcohol during treatment with methadone hydrochloride may cause you to overdose and die.

The possible side effects of methadone hydrochloride are:

constipation, nausea, sleepiness, vomiting, tiredness, headache, dizziness, abdominal pain. Call your healthcare provider if you have any of these symptoms and they are severe.

Get emergency medical help if you have:

trouble breathing, shortness of breath, fast heartbeat, chest pain, swelling of your face, tongue or throat, extreme drowsiness, light-headedness when changing positions, or you are feeling faint.

These are not all the possible side effects of methadone hydrochloride. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. For more information go to

Distributed by: West-Ward Pharmaceuticals Corp., Eatontown, NJ 07724, 1-800-962-8364

This Medication Guide has been approved by the U.S. Food and Drug Administration. Issue: April 2014


Revised: 7/2019