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What is Methadone 

Methadone reduces withdrawal symptoms in people addicted to heroin or other narcotics without high association with drug addiction.

This medicine is used as a pain reliever and as also a part of the drug addiction detoxification and maintenance programs. It is available only at pharmacies that are certified. If you have diseases like asthma or breathing problems, or a blockage in your stomach or intestines.

Important Information

Methadone works to treat pain by changing the way the brain and nervous system respond to pain. People who are addicted to opiate drugs have shown similar effects and prevent withdrawal symptoms in people who have stopped using these drugs.

It forms a habit so take this prescribed by the doctor. Do not take it in large amounts. Tell your doctor if you are or anyone alcoholic in your family or ever drunk a large amount of alcohol.

What to know before taking Methadone 

Do not use Methadone if you are allergic or if you have:

  •  Severe asthma or have the breathing problem,
  •  A blockage in your stomach or intestines,

To be sure if this medicine is safe for you tell your doctor if you have this before ever:

  • Breathing problem, sleep apnea,
  • Liver kidney diseases,
  • Urination problems,
  • A head injury, brain tumor, or seizures,
  • Drug or alcohol addiction or mental illness,
  • Problem with gallbladder, pancreas, or thyroid.

If you are using this opioid if you are pregnant, then your baby may depend on the drug. This can cause life-threatening withdrawal symptoms after birth in the baby. Babies born dependent on opioids may need medical treatment for several weeks.

If you are breastfeeding then do not feed it because Methadone can pass through breast milk in the baby’s body and cause drowsiness, breathing problems, or death in a nursing baby.

How to take Methadone 

Read and follow the guidance and prescription label. Never use it in large amounts, or not use it for a longer time. Ask your doctor if you want to take more Methadone.

Never share this medicine with anyone especially the person who is addicted to alcohol because it causes overdose addiction or maybe to death.

Methadone oral is taken by mouth. Methadone is injected into a muscle or under the skin, or given as an infusion into the vein. A doctor or a healthcare professional taught you how to inject yourself by injection.

If you are taking in liquid form then using the dosing syringe provided, or use a medicine dose-measuring device.

If you use a Methadone tablet in water or make a tablet dissolve into the water for injecting the drug into your vein then don’t do it because it causes death if you avoid the prescription labels.

Dissolve the dispersible tablet in water, orange juice, or other non-alcoholic beverage and citrus-flavored beverage.

Do not stop this treatment all of sudden before stopping this medicine ask your doctor.

When Methadone is used as part of a treatment program for drug addiction or detoxification, your doctor may recommend that your dose be given to you by a family member or other caregiver.

Methadone Dosage 

If you have children younger than 17 years then don’t give them because establishments are not found for children who are younger than 17 years.

Senior dosage (ages 65 and older)

The person who is 65 years or more than a kidney does not work as well as they used to. This can help the body to process drugs more slowly. If higher amounts of drugs stay in the body for a longer time. This raises the risk of side effects.

Important warning: Do not crush, dissolve, snort, or inject methadone tablets because this may cause you to overdose. This can be fatal.


If anyone overdoses then immediately call the Poison Helpline 1-800-222-1222

Overdose can be fatal, especially in a child or other person using methadone without a prescription.

Here are some symptoms of overdose:

  • Muscle weakness, cold and clammy skin,
  • Pinpoint pupils,
  • Very slow breathing or 
  • Coma
  • Slow heart rate,
  • Severe drowsiness

What to avoid while using Methadone 

Do not drink alcohol. It causes dangerous effects or may lead to death.

Avoid driving or operating any type of machine until you know medicine works on you because of it. Dizziness or severe drowsiness can cause falls, accidents, or severe injuries.

This medicine leads to unwanted side effects if methadone interacts with grapefruits. Avoid the use of products that are made of grapefruits.

Methadone Side Effects

If you have signs of hives, problems in breathing, swelling of your face, lips, tongue, or throat then take medical help immediately.

Opioid medicine can slow or stop your breathing and death may occur. A person caring for you should seek emergency medical attention if you have problems breathing with a long pause, or if you have hard to wake up or blue-colored lips.

Consult your doctor if you gave these:

  • Severe constipation,
  • Fast or pounding heartbeats, fluttering in your chest, shortness of breath,
  • Weak or shallow breathing, breathing that stops during sleep,
  • Nausea, vomiting, loss of appetite, worsening tiredness or weakness.
  • A light-headed feeling, like you, might pass out,

Serious side effects mostly in adults and those who are malnourished or debilitated.

 It also affects fertility in men and women if used for a longer time.

 Common side effects like:

  • Increased sweating
  • Nausea, vomiting,
  • Dizziness, drowsiness,
  • Pain, redness, or swelling where the medicine was injected.

What drugs can interact with Methadone

Opioid medicine can interact with many other drugs and cause many dangerous effects or death. Confirm your doctor knows if you also use:

  • Other neurotic medications- opioid pain medicine or prescription cough medicine,
  • Drugs that make you sleepy or slow your breathing 
  • Drugs that affect serotonin levels in your body
  • A sedative like Valium

Other drugs can interact with methadone, including prescription and over-the-counter medicine, vitamins, and herbal products.