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ABUSE POTENTIAL, LIFE-THREATENING RESPIRATORY DEPRESSION, LIFETHREATENING QT PROLONGATION, ACCIDENTAL EXPOSURE, and TREATMENT FOR OPIOID ADDICTION
DOLOPHINE contains methadone, an opioid agonist and Schedule II controlled substance with an abuse liability similar to other opioid agonists, legal or illicit [see WARNINGS AND PRECAUTIONS]. Assess each patient's risk for opioid abuse or addiction prior to prescribing DOLOPHINE. The risk for opioid abuse is increased in patients with a personal or family history of substance abuse (including drug or alcohol abuse or addiction) or mental illness (e.g., major depressive disorder). Routinely monitor all patients receiving DOLOPHINE for signs of misuse, abuse, and addiction during treatment [see Drug Abuse and Dependence].
Life-threatening Respiratory Depression
Respiratory depression, including fatal cases, have been reported during initiation and conversion of patients to DOLOPHINE, and even when the drug has been used as recommended and not misused or abused [see WARNINGS AND PRECAUTIONS]. Proper dosing and titration are essential and DOLOPHINE should only be prescribed by healthcare professionals who are knowledgeable in the use of potent opioids for the management of chronic pain. Monitor for respiratory depression, especially during initiation of DOLOPHINE or following a dose increase. The peak respiratory depressant effect of DOLOPHINE occurs later, and persists longer than the peak analgesic effect, especially during the initial dosing period.
Life-threatening QT Prolongation
QT interval prolongation and serious arrhythmia (torsades de pointes) have occurred during treatment with methadone. Most cases involve patients being treated for pain with large, multiple daily doses of methadone, although cases have been reported in patients receiving doses commonly used for maintenance treatment of opioid addiction. Closely monitor patients for changes in cardiac rhythm during initiation and titration of DOLOPHINE.
Accidental ingestion of DOLOPHINE, especially in children, can result in a fatal overdose of methadone [see WARNINGS AND PRECAUTIONS].
Conditions For Distribution And Use Of Methadone Products For The Treatment Of Opioid Addiction
For detoxification and maintenance of opioid dependence, methadone should be administered in accordance with the treatment standards cited in 42 CFR Section 8, including limitations on unsupervised administration [see INDICATIONS AND USAGE].
Methadone hydrochloride is chemically described as 6-(dimethylamino)-4,4-diphenyl-3-hepatanone hydrochloride. Methadone hydrochloride is a white, crystalline material that is water-soluble. Its molecular formula is C21H27NO•HCl and it has a molecular weight of 345.91. Methadone hydrochloride has a melting point of 235°C, and a pKa of 8.25 in water at 20°C. Its octanol/water partition coefficient at pH 7.4 is 117. A solution (1:100) in water has a pH between 4.5 and 6.5.
It has the following structural formula:
Each DOLOPHINE tablet contains 5 or 10 mg of methadone hydrochloride, USP and the following inactive ingredients: magnesium stearate, microcrystalline cellulose, and starch.
What are the possible side effects of methadone (Diskets, Dolophine, Methadose)?
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.
Call your doctor at once if you have any of these serious side effects:
- shallow breathing;
- hallucinations or confusion;
- chest pain, dizziness, fainting, fast or pounding heartbeat; or
- trouble breathing, feeling light-headed, or fainting.
Less serious side effects may include:
- feeling anxious, nervous, or restless;
- sleep problems...
What are the precautions when taking methadone (Dolophine)?
Before taking methadone, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: brain disorders (such as head injury, tumor, seizures), breathing problems (such as asthma, sleep apnea, chronic obstructive pulmonary disease-COPD), kidney disease, liver disease, mental/mood disorders (such as confusion, depression, thoughts of suicide), personal or family history of regular use/abuse of drugs/alcohol, stomach/intestinal problems (such as blockage, constipation, diarrhea due to infection, paralytic ileus),...
Last reviewed on RxList: 7/19/2012
This monograph has been modified to include the generic and brand name in many instances.
Additional Dolophine Information
Dolophine - User Reviews
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