Morphine Sulfate IR Oral

Do not take more than 1600 milligrams of this medication per day. Doing so may allow an ingredient (fumaric acid) in the capsule to damage your kidneys. If you need more than 1600 milligrams per day, your doctor should switch you to another form of morphine or a stronger medication.

You may also take quick-acting narcotic pain medications for sudden (breakthrough) pain if so directed by your doctor. Also follow your doctor's or pharmacist's instructions for safely using non-narcotic pain relievers (such as naproxen, ibuprofen). If you have been using other long-acting narcotic pain medications or narcotic patches regularly, check with your doctor or pharmacist because you may need to stop using them before you start using this medication. If you are currently using a narcotic patch (such as fentanyl), the effects may continue after it is removed. Ask your doctor or pharmacist when it will be safe to start taking this medication (usually 18 hours after removing the patch).

This medication may cause withdrawal reactions, especially if it has been used regularly for a long time or in high doses. In such cases, withdrawal symptoms (such as restlessness, watery eyes, widened pupils, sweating, runny nose) may occur if you suddenly stop using this medication. To prevent withdrawal reactions, your doctor may reduce your dose gradually. Consult your doctor or pharmacist for more details, and report any withdrawal reactions immediately.

When this medication is used for a long time, it may not work as well. Your doctor may need to increase your dose or change your medication. Talk with your doctor if this medication stops working well.

Along with its benefits, this medication may rarely cause abnormal drug-seeking behavior (addiction). This risk may be increased if you have abused alcohol or drugs in the past. Take this medication exactly as prescribed to lessen the risk of addiction.

Tell your doctor if your pain persists or worsens.

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Dosage and Storage