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Medications and Drugs

Pharmacy Author: Omudhome Ogbru, PharmD
Medical and Pharmacy Editor: Jay W. Marks, MD

GENERIC NAME: hydrocodone/acetaminophen

BRAND NAMES: Vicodin, Vicodin ES, Anexsia, Lorcet, Lorcet Plus, Norco

DRUG CLASS AND MECHANISM: Hydrocodone is a narcotic pain-reliever and a cough suppressant, similar to codeine. Hydrocodone blocks the receptors on nerve cells in the brain that give rise to the sensation of pain. Acetaminophen is a non-narcotic analgesic (pain reliever) and antipyretic (fever reducer). Acetaminophen works by elevating the threshold to pain, that is, in order for pain to be felt, greater stimulation of the nerves responsible for the sensation of pain is necessary. It reduces fever through its action on the temperature-regulating center of the brain. Frequently, hydrocodone and acetaminophen are combined to achieve pain relief, as in Vicodin and Lortab. For more information please see acetaminophen (Tylenol).

PRESCRIPTION: Yes

GENERIC AVAILABLE: Yes

PREPARATIONS: Tablets, capsules and liquid. Among the many brands the dose of acetaminophen ranges between 500 and 750 mg, and the dose of hydrocodone ranges between 2.5 and 10 mg.

STORAGE: Hydrocodone/acetaminophen should be stored at room temperature, between 15-30°C (59-86°F).

PRESCRIBED FOR: Hydrocodone/acetaminophen is prescribed for the relief of moderate to moderately severe pain.

DOSING: The usual dose for adults is 1 to 2 tablets or capsules (hydrocodone 2.5 to 10 mg; acetaminophen 300 to 750 mg) every 4 to 6 hours or 15 mL of liquid every 4 to 6 hours as needed.

DRUG INTERACTIONS: Combining alcohol and other sedatives with hydrocodone can lead to increased sedation and even cause confusion. Combining carbamazepine with acetaminophen may increase the risk of liver toxicity.

PREGNANCY: There are no adequate studies of hydrocodone/acetaminophen in pregnant women.

NURSING MOTHERS: Hydrocodone/acetaminophen is excreted in breast milk, and, therefore should be used cautiously by nursing mothers.

SIDE EFFECTS: The most frequent adverse reactions include lightheadedness, dizziness, sedation, nausea, and vomiting. Other side effects include drowsiness, constipation, and spasm of the ureter, which can lead to difficulty in urinating. Hydrocodone can impair thinking and the physical abilities required for driving or operating machinery. Hydrocodone can depress breathing, and should be used with caution in elderly, debilitated patients and in patients with serious lung disease. Hydrocodone may be habit forming. Mental and physical dependence can occur, but are unlikely when used for short-term pain relief.

Reference: FDA Prescribing Information


Last Editorial Review: 1/7/2008




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Pain management can be simple or complex, depending on the cause of the pain. An example of pain that is typically less complex would be nerve root irritation from a herniated disc with pain radiating down the leg. This condition can often be alleviated with an epidural steroid injection and physical therapy. Sometimes, however, the pain does not go away. This can require a wide variety of skills and techniques to treat the pain. These skills and techniques include:

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