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(oxymorphone hydrochloride) Tablets
OPANA (oxymorphone hydrochloride) is a semi-synthetic opioid analgesic supplied in 5 mg and 10 mg tablet strengths for oral administration. The tablet strengths describe the amount of oxymorphone hydrochloride per tablet. The tablets contain the following inactive ingredients: lactose monohydrate, magnesium stearate, and pregelatinized starch. In addition, the 5 mg tablets contain FD&C blue No. 2 aluminum lake. The 10 mg tablets contain D&C red No. 30 aluminum lake.
Chemically, oxymorphone hydrochloride is 4, 5α-epoxy-3, 14-dihydroxy-17-methylmorphinan-6-one hydrochloride, a white or slightly off-white, odorless powder, which is sparingly soluble in alcohol and ether, but freely soluble in water. The molecular weight of oxymorphone hydrochloride is 337.80. The pKa1 and pKa2 of oxymorphone at 37°C are 8.17 and 9.54, respectively. The octanol/aqueous partition coefficient at 37°C and pH 7.4 is 0.98.
The structural formula for oxymorphone hydrochloride is as follows:
What are the possible side effects of oxymorphone (Opana, Opana ER)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using oxymorphone and call your doctor at once if you have a serious side effect such as:
- shallow breathing, slow heartbeat;
- seizure (convulsions);
- cold, clammy skin;
- severe weakness or dizziness; or
- feeling light-headed, fainting.
Less serious side effects are more likely to occur, such as:
- nausea, vomiting,...
What are the precautions when taking oxymorphone hydrochloride (Opana)?
Before taking oxymorphone, tell your doctor or pharmacist if you are allergic to it; or to other narcotic pain medications (e.g., codeine, morphine); 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 (e.g., head injury, tumor, seizures), breathing problems (e.g., asthma, sleep apnea, chronic obstructive pulmonary disease-COPD), kidney disease, liver disease, mental/mood disorders (e.g., confusion, depression, thoughts of suicide), disease of the pancreas (pancreatitis), gallbladder disease, personal or family history of regular use/abuse of...
Last reviewed on RxList: 3/28/2011
This monograph has been modified to include the generic and brand name in many instances.
Additional Opana Information
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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