Methadone is a synthetic opioid that is used as a maintenance anti-additive for people who suffer from an opioid dependency, an addiction to heroin, morphine, codeine, oxycodone, etc. Although methadone acts upon the same opioid receptors as the drugs mentioned above, it is chemically different to them even though it has many of the same effects.
The most commonly used administration of methadone is through an oral solution however this is becoming less common because of its high production costs. Two drinkable formations are available for patients, one in a ready-to-disperse liquid, the other in a dissolvable tablet that is placed in water for the patient to drink. The liquid form is the most common method as it allows for easy changes in dosage. Studies have found that there is almost no difference in effectiveness when methadone is taken orally to when it is injected directly into the bloodstream, although methadone should not be injected. Although it can be done in extremely diluted forms, there have been reports of cardiac arrests and damaged veins from the sugar intake when injecting. Taking the medicine orally is the simplest and safest way for patients who are recovering from drug addiction to take.
There are quite a large number of adverse side effects that can occur when taking methadone. These include: Thrombus, hypoventilation, constricted pupils, constipation, seizures, skin rash, increased sweating or an intolerance to heat, low blood pressure, nausea and vomiting, anorexia, weight gain, sudden death, dry mouth, difficulty urinating, headaches, hallucinations, stomach pains, itching, flushing, mood changes and increased agitation, insomnia, impotence, blurred vision and cardiac arrhythmia.