What is Vicodin HP and how is it used?
Vicodin HP is a prescription medicine used to treat the symptoms of Moderate-to-Severe Pain. Vicodin HP may be used alone or with other medications.
- Vicodin HP belongs to a class of drugs called Analgesics, Opioid Combos.
- It is not known if Vicodin HP is safe and effective in children younger than 2 years of age.
What are the possible side effects of Vicodin HP?
Vicodin HP may cause serious side effects including:
- difficulty breathing,
- swelling of your face, lips, tongue, or throat,
- slow breathing with long pauses,
- blue colored lips,
- difficulty to wake up,
- skin redness,
- a rash that spreads and causes blistering and peeling,
- noisy breathing,
- shallow breathing,
- upper stomach pain,
- loss of appetite,
- dark urine,
- clay-colored stools,
- yellowing of the skin or eyes (jaundice),
- loss of appetite,
- worsening tiredness,
- fast heart rate,
- muscle stiffness,
- loss of coordination, and
Get medical help right away, if you have any of the symptoms listed above.
The most common side effects of Vicodin HP include:
- feeling tired,
- stomach pain,
- constipation, and
Tell the doctor if you have any side effect that bothers you or that does not go away.
These are not all the possible side effects of Vicodin HP. For more information, ask your doctor or pharmacist.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Hydrocodone bitartrate and acetaminophen are 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 4,5α-epoxy-3-methoxy-17-methylmorphinan-6-one tartrate (1:1) hydrate (2:5).
It has the following structural formula:
C18H21NO3.C4H6O6.2½ H2O M.W.= 494.50
Acetaminophen, 4-hydroxyacetanilide, a slightly bitter, white, odorless, crystalline powder, is a non-opiate, non-salicylate analgesic and antipyretic. It has the following structural formula:
C8H9NO2 M.W.= 151.17
Each VICODIN HP (hydrocodone bitrate and acetaminophen tablets) Tablet contains:
Hydrocodone Bitartrate 10 mg
Acetaminophen 660 mg
In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, magnesium stearate, microcrystalline cellulose, povidone, pregelatinized starch, and stearic acid.
Meets USP Dissolution Test 2.
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VICODIN HP (hydrocodone bitrate and acetaminophen tablets) Tablets are indicated for the relief of moderate to moderately severe pain.
DOSAGE AND ADMINISTRATION
Dosage should be adjusted according to severity of pain and the response of the patient. However, it should be kept in mind that tolerance to hydrocodone can develop with continued use and that the incidence of untoward effects is dose related.
The usual adult dosage is one tablet every four to six hours as needed for pain. The total daily dosage should not exceed 6 tablets.
VICODIN HP® (hydrocodone bitrate and acetaminophen tablets) (hydrocodone bitartrate and acetaminophen, 10 mg/660 mg) is supplied as a white, oval-shaped, tablet bisected on one side and debossed with “VICODIN HP (hydrocodone bitrate and acetaminophen tablets) ” on the other side.
Bottles of 100-NDC #0074-2274-14
Bottles of 500-NDC #0074-2274-54
Storage: Store at 25°C (77°F); excursions permitted to 15°-30°C (59°-86°F). [see USP Controlled Room Temperature]. Dispense in a tight, light-resistant container as defined in the USP.
Revised March, 2007. Abbott Laboratories, North Chicago, IL 60064, USA
The most frequently reported adverse reactions are 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
Central Nervous System
Prolonged administration of VICODIN HP (hydrocodone bitrate and acetaminophen tablets) Tablets may produce constipation.
Cases of hearing impairment or permanent loss have been reported predominantly in patients with chronic overdose.
Skin rash, pruritus.
Potential effects of high dosage are listed in the OVERDOSAGE section.
Drug Abuse And Dependence
Misuse, Abuse, and Diversion of Opioids
VICODIN HP (hydrocodone bitrate and acetaminophen tablets) contains hydrocodone, an opioid agonist, and is a Schedule III controlled substance. VICODIN HP (hydrocodone bitrate and acetaminophen tablets) , 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 HP (hydrocodone bitrate and acetaminophen tablets) , 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.
Patients receiving narcotics, antihistamines, antipsychotics, antianxiety agents, or other CNS depressants (including alcohol) concomitantly with VICODIN HP (hydrocodone bitrate and acetaminophen tablets) Tablets may exhibit an additive CNS depression. When combined therapy is contemplated, the dose of one or both agents should be reduced.
Drug/Laboratory Test Interactions
Acetaminophen may produce false-positive test results for urinary 5-hydroxyindoleacetic acid.
At high doses or in sensitive patients, hydrocodone may produce dose-related respiratory depression by acting directly on the brain stem respiratory center. Hydrocodone also affects the center that controls respiratory rhythm, and may produce irregular and periodic breathing.
Head Injury and Increased Intracranial Pressure
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.
Acute Abdominal Conditions
The administration of narcotics may obscure the diagnosis or clinical course of patients with acute abdominal conditions.
Misuse, Abuse, and Diversion of Opioids
VICODIN HP (hydrocodone bitrate and acetaminophen 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 HP (hydrocodone bitrate and acetaminophen tablets) can be abused in a manner similar to other opioid agonists, legal or illicit. This should be considered when prescribing or dispensing VICODIN HP in situations where the physician or pharmacist is concerned about an increased risk of misuse, abuse or diversion (see Drug Abuse And Dependence).
Special Risk Patients
As with any narcotic analgesic agent, VICODIN HP (hydrocodone bitrate and acetaminophen tablets) 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 HP (hydrocodone bitrate and acetaminophen tablets) Tablets are used postoperatively and in patients with pulmonary disease.
Carcinogenesis, Mutagenesis, Impairment of Fertility
Pregnancy Category C. There are no adequate and well-controlled studies in pregnant women. VICODIN HP (hydrocodone bitrate and acetaminophen tablets) 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.
Labor and Delivery
As with all narcotics, administration of VICODIN HP (hydrocodone bitrate and acetaminophen tablets) 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 HP® (hydrocodone bitrate and acetaminophen tablets) (hydrocodone bitartrate and acetaminophen 10 mg/660 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.
Signs and Symptoms
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.
Early symptoms following a potentially hepatotoxic overdose may include: nausea, vomiting, diaphoresis and general malaise. Clinical and laboratory evidence of hepatic toxicity may not be apparent until 48 to 72 hours post-ingestion.
In adults, hepatic toxicity has rarely been reported with acute overdoses of less than 10 grams, or fatalities with less than 15 grams.
Immediate treatment includes support of cardiorespiratory function and measures to reduce drug absorption. Vomiting should be induced mechanically, or with syrup of ipecac, if the patient is alert (adequate pharyngeal and laryngeal reflexes). Oral activated charcoal (1 g/kg) should follow gastric emptying. The first dose should be accompanied by an appropriate cathartic. If repeated doses are used, the cathartic might be included with alternate doses as required. Hypotension is usually hypovolemic and should respond to fluids. Vasopressors and other supportive measures should be employed as indicated. A cuffed endo-tracheal tube should be inserted before gastric lavage of the unconscious patient and, when necessary, to provide assisted respiration.
Meticulous attention should be given to maintaining adequate pulmonary ventilation. In severe cases of intoxication, peritoneal dialysis, or preferably hemodialysis may be considered. If hypoprothrombinemia occurs due to acetaminophen overdose, vitamin K should be administered intravenously.
Naloxone, an opioid antagonist, can reverse respiratory depression and coma associated with opioid overdose. Naloxone hydrochloride 0.4 mg to 2 mg is given parenterally. Since the duration of action of hydrocodone may exceed that of the naloxone, the patient should be kept under continuous surveillance and repeated doses of the antagonist should be administered as needed to maintain adequate respiration. An opioid antagonist should not be administered in the absence of clinically significant respiratory or cardiovascular depression.
If the dose of acetaminophen may have exceeded 140 mg/kg, acetylcysteine should be administered as early as possible. Serum acetaminophen levels should be obtained, since levels four or more hours following ingestion help predict acetaminophen toxicity. Do not await acetaminophen assay results before initiating treatment. Hepatic enzymes should be obtained initially, and repeated at 24-hour intervals.
The toxic dose for adults for acetaminophen is 10 g.
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.
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. Antipyretic activity is mediated through hypothalamic heat regulating centers. Acetaminophen 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 10 mg 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 O-demethylation, N-demethylation and 6-keto reduction to the corresponding 6-α- and 6-β- 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.
Hydrocodone, 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.
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.
Pain Management Resources
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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