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Pronunciation |
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(SAL
sa
late) |
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U.S. Brand
Names |
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Argesic®-SA; Artha-G®;
Disalcid®; Marthritic®; Mono-Gesic®;
Salflex®; Salgesic®; Salsitab® |
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Generic
Available |
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Yes |
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Synonyms |
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Disalicylic Acid; Salicylsalicylic Acid |
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Pharmacological Index |
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Salicylate |
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Use |
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Treatment of minor pain or fever; arthritis |
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Pregnancy Risk
Factor |
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C (D in 3rd trimester) |
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Contraindications |
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GI ulcer or bleeding, known hypersensitivity to
salsalate |
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Warnings/Precautions |
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Use with caution in patients with platelet and bleeding disorders, renal
dysfunction, erosive gastritis, or peptic ulcer disease, dehydration, previous
nonreaction does not guarantee future safe taking of medication; do not use
aspirin in children <16 years of age for chickenpox or flu symptoms due to
the association with Reye's syndrome |
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Adverse
Reactions |
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>10%: Gastrointestinal: Nausea, heartburn, stomach pains, dyspepsia
1% to 10%:
Central nervous system: Fatigue
Dermatologic: Rash
Gastrointestinal: Gastrointestinal ulceration
Hematologic: Hemolytic anemia
Neuromuscular & skeletal: Weakness
Respiratory: Dyspnea
Miscellaneous: Anaphylactic shock
<1%: Insomnia, nervousness, jitters, leukopenia, thrombocytopenia, iron
deficiency anemia, does not appear to inhibit platelet aggregation, occult
bleeding, hepatotoxicity, impaired renal function, bronchospasm
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Overdosage/Toxicology |
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Symptoms of overdose include respiratory alkalosis, hyperpnea, tachypnea,
tinnitus, headache, hyperpyrexia, metabolic acidosis, hypoglycemia, coma. The
"Done" nomogram is very helpful for estimating the severity of aspirin poisoning
and directing treatment using serum salicylate levels.
Treatment should also be based upon symptomatology. Toxic symptoms and
corresponding treatments are as follows:
- Overdose: Induce emesis with ipecac, and/or lavage with saline,
followed with activated charcoal
- Dehydration: I.V. fluids with KCl (no D5W only)
- Metabolic acidosis (must be treated): Sodium bicarbonate
- Hyperthermia: Cooling blankets or sponge baths
- Coagulopathy/hemorrhage: Vitamin K I.V.
- Hypoglycemia (with coma, seizures, or change in mental status):
Dextrose 25 g I.V.
- Seizures: Diazepam 5-10 mg I.V.
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Drug
Interactions |
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Decreased effect with urinary alkalinizers, antacids, corticosteroids;
decreased effect of uricosurics, spironolactone; ACE-inhibitor effects may be
decreased by concurrent therapy with NSAIDs
Increased effect/toxicity of oral anticoagulants, hypoglycemics, methotrexate
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Mechanism of
Action |
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Inhibits prostaglandin synthesis, acts on the hypothalamus heat-regulating
center to reduce fever, blocks prostaglandin synthetase action which prevents
formation of the platelet-aggregating substance thromboxane
A2 |
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Pharmacodynamics/Kinetics |
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Onset of action: Therapeutic effects occur within 3-4 days of continuous
dosing
Absorption: Oral: Completely from the small intestine
Metabolism: Hydrolyzed in the liver to 2 moles of salicylic acid (active)
Half-life: 7-8 hours
Elimination: Almost totally excreted renally |
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Usual Dosage |
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Adults: Oral: 3 g/day in 2-3 divided doses |
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Dietary
Considerations |
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May be administered with food to decrease GI distress |
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Test
Interactions |
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False-negative results for glucose oxidase urinary glucose tests
(Clinistix®); false-positives using the cupric sulfate
method (Clinitest®); also, interferes with Gerhardt test,
VMA determination; 5-HIAA, xylose tolerance test and T3 and
T4 |
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Mental Health: Effects
on Mental Status |
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May cause drowsiness; may rarely cause nervousness or
insomnia |
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Mental Health:
Effects on Psychiatric
Treatment |
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May rarely cause leukopenia; use caution with clozapine and
carbamazepine |
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Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
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No information available to require special precautions |
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Dental Health:
Effects on Dental Treatment |
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NSAID formulations are known to reversibly decrease platelet aggregation via
mechanisms different than observed with aspirin. The dentist should be aware of
the potential of abnormal coagulation. Caution should also be exercised in the
use of NSAIDs in patients already on anticoagulant therapy with drugs such as
warfarin (Coumadin®). |
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Patient
Information |
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Take this medication exactly as directed; do not increase dose without
consulting prescriber. Do not crush tablets or break capsules. Take with food or
milk to reduce GI distress. Maintain adequate fluid intake (2-3 L/day of fluids
unless instructed to restrict fluid intake). Do not use alcohol, aspirin, or
aspirin-containing medication, and all other anti-inflammatory medications
without consulting prescriber. You may experience drowsiness (use caution when
driving or engaging in tasks requiring alertness until response to drug is
known); nausea or heartburn (frequent small meals, frequent mouth care, sucking
lozenges, or chewing gum may help). GI bleeding, ulceration, or perforation can
occur with or without pain; discontinue medication and contact prescriber if
persistent abdominal pain or cramping, or blood in stool occurs. Report
breathlessness or difficulty breathing; unusual bruising/bleeding; blood in
urine, stool, mouth, or vomitus; unusual fatigue; skin rash or itching; change
in urinary pattern; or change in hearing or ringing in ears.
Pregnancy/breast-feeding precautions: Inform prescriber if you are or intend
to be pregnant. Do not breast-feed. |
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Nursing
Implications |
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Does not appear to inhibit platelet aggregation |
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Dosage Forms |
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Capsule: 500 mg
Tablet: 500 mg, 750 mg |
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References |
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Chapman BJ and Proudfoot AT,
"Adult Salicylate Poisoning: Deaths and Outcome in Patients With High Plasma Salicylate Concentrations,"
Q J Med, 1989, 72(268):699-707.
Dugandric RM, Tierney MG, and Dickinson GE,
"Evaluation of the Done Nomogram in the Management of Acute Salicylate Intoxication,"
Ann Emerg Med, 1989, 18(11):1186-90.
Gurwitz JH, Avorn J, Ross-Degnan D, et al,
"Nonsteroidal Anti-Inflammatory Drug-Associated Azotemia in the Very Old,"
JAMA, 1990, 264(4):471-5.
Hawkey CJ, Karrasch JA, Szczepanski L, et al,
"Omeprazole Compared With Misoprostrol for Ulcers Associated With Nonsteroidal Anti-inflammatory Drugs,"
N Engl J Med, 1998, 338(11):727-34.
Spontak SF, Hassan FM, and Spadafora MP,
"Salsalate Intoxication and Ramifications of Utilizing Nonspecific Analytical Methods in Estimating Quantitative Blood Concentrations,"
J Anal Toxicol, 1994, 18(4):229-31.
Vandenberg SA, Smolinske SC, Spoerke DG, et al,
"Nonaspirin Salicylates: Conversion Factors for Estimating Aspirin Equivalency,"
Vet Hum Toxicol, 1989, 31(1):49-50.
Verbeeck RK,
"Pharmacokinetic Drug Interactions With Nonsteroidal Anti-inflammatory Drugs,"
Clin Pharmacokinet, 1990, 19(1):44-66.
Vertrees JE, McWilliams BC, and Kelly HW,
"Repeated Oral Administration for Treating Aspirin Overdose in Young Children,"
Pediatrics, 1990, 85(4):594-8.
Weissmann G, "Aspirin," Sci Am, 1991, 264(1):84-90.
Yeomans ND, Tulassay Z, Juhasz L, et al,
"A Comparison of Omeprazole With Ranitidine for Ulcers Associated With Nonsteroidal Anti-inflammatory Drugs,"
N Engl J Med, 1998, 338(11):719-26.
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