Vicodin is hydrocodone bitartrate and acetaminophen supplied in tablet form. Hydrocodone bitartrate is an opioid analgesic and antitussive. Vicodin tablets are indicated for the relief of moderate to moderately severe pain.
VICODIN- hydrocodone bitartrate and acetaminophen tablet
Hydrocodone bitartrate and acetaminophen is supplied in tablet form for oral administration.
Hydrocodone bitartrate is an opioid analgesic and antitussive and occurs as fine, white crystals or as a crystalline powder. It is affected by light. The chemical name is: 4,5〈-epoxy-3-methoxy-17-methylmorphinan-6-one tartrate (1:1) hydrate (2:5). It has the following structural formula:
C18H21NO3•C4H6O6•2½H2O M.W. 494.50
Acetaminophen, 4’-hydroxyacetani lide, a slightly bitter, white, odorless, crystalline powder, is a nonopiate, non-salicylate analgesic and anti pyretic. It has the following structural formula:
C8H9NO2 M.W. 151.16
Each VICODIN tablet contains:
Hydrocodone Bitartrate 5 mg
Acetaminophen 500 mg
In addition each tablet contains the following inactive ingredients: colloidal silicon dioxide, starch, cros carmellose sodium, dibasic calcium phosphate, magnesium stearate, microcrystalline cellulose, povidone, and stearic acid.
Meets USP Dissolution Test 2.
Hydrocodone is a semisynthetic narcotic analgesic and antitussive with multiple actions qualitatively similar to those of codeine. Most of these involve the central nervous system and smooth muscle. The precise mechanism of action of hydrocodone and other opiates is not known, although it is believed to relate to the existence of opiate receptors in the central nervous system. In addition to analgesia, narcotics may produce drowsiness, changes in mood and mental clouding.
The analgesic action of acetaminophen involves peripheral influences, but the specific mechanism is as yet undetermined. Anti pyretic activity is mediated through hypothalamic heat regulating centers. Aceta minophen inhibits prostaglandin synthetase. Therapeutic doses of acetaminophen have negligible effects on the cardiovascular or respiratory systems; however, toxic doses may cause circulatory failure and rapid, shallow breathing.
The behavior of the individual components is described below.
Following a 10mg oral dose of hydrocodone administered to five adult male subjects, the mean peak concentration was 23.6 ± 5.2ng/mL. Maximum serum levels were achieved at 1.3 ± 0.3 hours and the half-life was determined to be 3.8 ± 0.3 hours. Hydrocodone exhibits a complex pattern of metabolism including 0-demethylation, N-demethylation and 6-keto reduction to the cor responding 6-〈- and 6–®-hydroxy- metabolites. See OVERDOSAGE for toxicity information.
Acetaminophen is rapidly absorbed from the gastrointestinal tract and is distributed throughout most body tissues. The plasma half-life is 1.25 to 3 hours, but may be increased by liver damage and following overdosage. Elimination of acetaminophen is principally by liver metabolism (conjugation) and subsequent renal excretion of metabolites. Approximately 85% of an oral dose appears in the urine within 24 hours of administration, most as the glucuronide conjugate, with small amounts of other conjugates and unchanged drug. See OVERDOSAGE for toxicity information.
VICODIN tablets are indicated for the relief of moderate to moderately severe pain.
This product should not be administered to patients who have previously exhibited hypersensitivity to hydrocodone or acetaminophen.
Patients known to be hypersensitive to other opioids may exhibit cross-sensitivity to hydrocodone.
At high doses or in sensitive patients, hydrocodone may produce doserelated respiratory depression by acting directly on the brain stem respiratory center. Hydro codone also affects the center that controls respiratory rhythm, and may produce irregular and periodic breathing.
The respiratory depressant effects of narcotics and their capacity to elevate cerebrospinal fluid pressure may be markedly exaggerated in the presence of head injury, other intracranial lesions or a preexisting increase in intracranial pressure. Furthermore, narcotics produce adverse reactions, which may obscure the clinical course of patients with head injuries.
The administration of narcotics may obscure the diagnosis or clinical course of patients with acute abdominal conditions.
VICODIN tablets contains hydrocodone, an opioid agonist, and is a Schedule III controlled substance. Opioid agonists have the potential for being abused and are sought by abusers and people with addiction disorders, and are subject to diversion.
VICODIN tablets can be abused in a manner similar to other opioid agonists, legal or illicit. This should be considered when prescribing or dispensing VICODIN tablets in situations where the physician or pharmacist is concerned about an increased risk of misuse, abuse or diversion (see DRUG ABUSE AND DEPENDENCE).
As with any narcotic analgesic agent, VICODIN Tablets should be used with caution in elderly or debilitated patients and those with severe impairment of hepatic or renal function, hypothyroidism, Addison’s disease, prostatic hypertrophy or urethral stricture. The usual precautions should be observed and the possibility of respiratory depression should be kept in mind.
Hydrocodone suppresses the cough reflex; as with all narcotics, caution should be exercised when VICODIN Tablets are used postoperatively and in patients with pulmonary disease.
Hydro co done, like all narcotics, may impair the mental and/or physical abilities required for the performance of potentially hazardous tasks such as driving a car or operating machinery; patients should be cautioned accordingly.
Alcohol and other CNS depressants may produce an additive CNS depression, when taken with this combination product, and should be avoided.
Hydrocodone may be habit forming. Patients should take the drug only for as long as it is prescribed, in the amounts prescribed, and no more frequently than prescribed.
In patients with severe hepatic or renal disease, effects of therapy should be monitored with serial liver and/or renal function tests.
Patients receiving other narcotic analgesics, antihistamines, antipsychotics, antianxiety agents, or other CNS depressants (including alcohol) concomitantly with VICODIN Tablets may exhibit an additive CNS depression. When combined therapy is contemplated, the dose of one or both agents should be reduced.
The use of MAO inhibitors or tricyclic antidepressants with hydrocodone preparations may increase the effect of either the antidepressant or hydrocodone.
Acetaminophen may produce false-positive test results for urinary 5-hydroxyindoleacetic acid.
No adequate studies have been conducted in animals to determine whether hydrocodone or acetaminophen have a potential for carcinogenesis, mutagenesis, or impairment of fertility.
There are no adequate and well-controlled studies in pregnant women. VICODIN Tablets should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
Babies born to mothers who have been taking opioids regularly prior to delivery will be physically dependent. The withdrawal signs include irritability and excessive crying, tremors, hyperactive reflexes, increased respiratory rate, increased stools, sneezing, yawning, vomiting, and fever. The intensity of the syndrome does not always correlate with the duration of maternal opioid use or dose. There is no consensus on the best method of managing withdrawal.
As with all narcotics, administration of VICODIN Tablets to the mother shortly before delivery may result in some degree of respiratory depression in the newborn, especially if higher doses are used.
Acetaminophen is excreted in breast milk in small amounts, but the significance of its effects on nursing infants is not known. It is not known whether hydrocodone is excreted in human milk. Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from hydrocodone and acetaminophen, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.
Safety and effectiveness in the pediatric population have not been established.
Clinical studies of VICODIN (hydrocodone bitartrate 5 mg and acetaminophen 500 mg) did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.
Hydrocodone and the major metabolites of acetaminophen are known to be substantially excreted by the kidney. Thus the risk of toxic reactions may be greater in patients with impaired renal function due to accumulation of the parent compound and/or metabolites in the plasma. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function.
Hydrocodone may cause confusion and over-sedation in the elderly; elderly patients generally should be started on low doses of hydrocodone bitartrate and acetaminophen tablets and observed closely.
The most frequently reported adverse reactions include: lightheadedness, dizziness, sedation, nausea and vomiting. These effects seem to be more prominent in ambulatory than in nonambulatory patients and some of these adverse reactions may be alleviated if the patient lies down.
Other adverse reactions include:
Drowsi ness, mental clouding, lethargy, impairment of mental and physical performance, anxiety, fear, dysphoria, psychic dependence, mood changes.
Prolonged administration of VICODIN Tablets may produce constipation.
Ureteral spasm, spasm of vesical sphincters and urinary retention have been reported with opiates.
Hydro codone bitartrate may produce dose-related respiratory depression by acting directly on the brain stem respiratory center. (see OVERDOSAGE).
Cases of hearing impairment or permanent loss have been reported predominantly in patients with chronic overdose
Skin rash, pruritus.
The following adverse drug events may be borne in mind as potential effects of acetaminophen: allergic reactions, rash, thrombocytopenia, agranulocytosis.
Potential effects of high dosage are listed in the OVERDOSAGE section.
VICODIN® (hydrocodone bitartrate and acetaminphen, 5 mg/500 mg) contains hydrocodone, an opioid agonist, and is a Schedule III controlled substance. VICODIN, and other opioids, used in analgesia can be abused and are subject to criminal diversion.
Addiction is a primary, chronic, neurobiologic disease, with genetic, psychosocial, and environmental factors influencing its development and manifestations. It is characterized by behaviors that include one or more of the following: impaired control over drug use, compulsive use, continued use despite harm, and craving. Drug addiction is a treatable disease utilizing a multidisciplinary approach, but relapse is common.
“Drug seeking” behavior is very common in addicts and drug abusers. Drug-seeking tactics include emergency calls or visits near the end of office hours, refusal to undergo appropriate examination, testing or referral, repeated “loss” of prescriptions, tampering with prescriptions and reluctance to provide prior medical records or contact information for other treating physician(s). “Doctor shopping” to obtain additional prescriptions is common among drug abusers and people suffering from untreated addiction.
Abuse and addiction are separate and distinct from physical dependence and tolerance. Physical dependence usually assumes clinically significant dimensions only after several weeks of continued opioid use, although a mild degree of physical dependence may develop after a few days of opioid therapy. Tolerance, in which increasingly large doses are required in order to produce the same degree of analgesia, is manifested initially by a shortened duration of analgesic effect, and subsequently by decreases in the intensity of analgesia. The rate of development of tolerance varies among patients. Physicians should be aware that abuse of opioids can occur in the absence of true addiction and is characterized by misuse for non-medical purposes, often in combination with other psychoactive substances. VICODIN, like other opioids, may be diverted for non-medical use. Record-keeping of prescribing information, including quantity, frequency, and renewal requests is strongly advised.
Proper assessment of the patient, proper prescribing practices, periodic re-evaluation of therapy, and proper dispensing and storage are appropriate measures that help to limit abuse of opioid drugs.
Following an acute overdosage, toxicity may result from hydrocodone or acetaminophen.
Serious overdose with hydrocodone is characterized by respiratory depression (a decrease in respiratory rate and/or tidal volume, Cheyne-Stokes respiration, cyanosis), extreme somnolence progressing to stupor or coma, skeletal muscle flaccidity, cold and clammy skin, and sometimes bradycardia and hypotension. In severe overdosage, apnea, circulatory collapse, cardiac arrest and death may occur.
In This Section
- Painkillers: Analgesics and Muscle Relaxants
- Acetaminophen and Codeine Phosphate
- Cyclobenzaprine Hydrochloride
- Hydromorphone Hydrochloride
- Meperidine Hydrochloride
- Methadone Hydrochloride
- Morphine Sulfate
- Oxymorphone Hydrochloride
- Tramadol Hydrochloride
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