What is Disalcid and how is it used?
Disalcid is a prescription medicine used to treat the symptoms of Osteoarthritis and Rheumatoid Arthritis. Disalcid may be used alone or with other medications.
Disalcid belongs to a class of drugs called NSAIDs; Salicylates.
It is not known if Disalcid is safe and effective in children.
What are the possible side effects of Disalcid?
Disalcid may cause serious side effects including:
- difficulty breathing,
- swelling of your face, lips, tongue, or throat,
- sore throat,
- burning eyes,
- skin pain,
- red or purple skin rash with blistering and peeling,
- swelling in your hands or feet,
- rapid weight gain,
- severe headache,
- blurred vision,
- pounding in your neck or ears,
- pale skin,
- unusual tiredness,
- cold hands and feet,
- stomach pain (upper right side),
- yellowing of the skin or eyes (jaundice),
- bloody or tarry stools,
- coughing up blood,
- vomit that looks like coffee grounds,
- chest pain or pressure,
- pain spreading to your jaw or shoulder,
- sudden numbness or weakness (especially on one side of the body),
- severe headache,
- slurred speech, and
- balance problems
Get medical help right away, if you have any of the symptoms listed above.
The most common side effects of Disalcid include:
- hearing problems,
- spinning sensation,
- rash, and
- abnormal liver function tests
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 Disalcid. 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.
DISALCID (salsalate) is a nonsteroidal anti-inflammatory agent for oral administration. Chemically, salsalate (salicylsalicylic acid or 2-hydroxybenzoE acid, 2carboxyphenyl ester) is a dimer of salicylic acid; its structural formula is shown below.
Each DISALCID capsule contains 500 mg salsalate and also contains colloidal silicon dioxide, gelatin, magnesium stearate, pregelatinited starch, corn starch, titanium dioxide, FD& C blue #l, and D& C yellow #l0. Each DISALCI D tablet contains 500 or 750 mg salsalate and also contains croscarmellose sodium, hydroxypropyl methylcellulose, magnesium stearate, microcryst, alline cellulose, polyethylene glycol, polysorbate 80, propylene glycol, talc, titanium dioxide, FD& C blue #l, and D& C yellow #l0. (See HOW SUPPLIED)
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DISALCID (salsalate) is indicated for relief of the signs and symptoms of rheumatoid arthritis, osteoarthritis and related rheumatic disorders.
DOSAGE AND ADMINISTRATION
The usual dosage is 3000 mg daily, given in divided doses as follows: 1) two doses of two 750 mg tablets: 2) two doses of three 500 mg tablets/capsules; or 3) three doses of two 500 mg tablets/capsules. Some patients, e.g., the elderly, may require a lower dosage to achieve therapeutic blood concentrations and to avoid the more common side effects such as auditory.
Alleviation of symptoms is gradual, and full benefit may not be evident for 3 to 4 days, when plasma salicylate levels have achieved steady state. There is no evidence for development of tissue tolerance (tachyphylaxis) but salicylate therapy may induce increased activity of metabolizing liver enzymes, causing a greater rate of salicyluric acid production and excretion, with a resultant increase in dosage requirement for maintenance of therapeutic serum salicylate levels.
Dosage recommendations and indications for DISALCID (salsalate) use in children have not been established.
HOW SUPPLIEDEach DISALCID (salsalate) 500 mg aqua/white capsule printed with Disalcid (salsalate) /3M is available in:
Bottles of 100 (NDC #0089-0148-10)
Each DISALCID (salsalate) 500 mg aqua, film coated, round, bisected tablet embossed with DISALCID (salsalate) on one side and 3M on the other side is available in:
Bottles of 100 (NDC #0089-0149-10)
Bottles of 500 (NDC #0089-0149-50)
Each DISALCID (salsalate) 750 mg aqua, film coated, capsule shaped, bisected tablet embossed with DISALCID (salsalate) 750 on one side and 3M on the other side is available in:
Bottles of 100 (NDC #0089-0151-10)
Bottles of 500 (NDC #0089-0151-50)
Store at controlled room temperature 15°-30°C (59°-86°F).
Northridge, CA 91324
In two well-controlled clinical trials (n= 280 patients), the following reversible adverse experiences characteristic of salicylates were most commonly reported with DISALCID (salsalate) , listed in descending order of frequency: tinnitus, nausea, hearing impairment, rash, and vertigo. These common symptoms of salicylates, i.e., tinnitus or reversible hearing impairment, are often used as a guide to therapy.
Although cause-and-effect relationships have not been established, spontaneous reports over a ten-year period have included the following additional medically significant adverse experiences: abdominal pain, abnormal hepatic function, anaphylactic shock, angioedema, bronchospasm, decreased creatinine dearance, diarrhea, G.I. bleeding, hepatitis, hypotension, nephritis and urticaria.
DRUG ABUSE AND DEPENDENCE
Drug abuse and dependence have not been reported with DISALCID (salsalate) .
Salicylates antagonize the uricosuric action of . drugs used to treat gout. ASPIRIN AND OTHER SALICYLATE DRUGS WILL BE ADDITIVE TO DISALCID (salsalate) AND MAY INCREASE PLASMA CONCENTRATIONS OF SALICYLIC ACID TO TOXIC LEVELS. Drugs and foods that raise urine pH will increase renal clearance and urinary excretion of salicylic acid, thus lowering plasma levels; acidifying drugs or foods will decrease urinary excretion and increase plasma levels. Salicylates given concomitantly with anticoagulant drugs may predispose to systemic bleeding. Salicylates may enhance the hypoglycemic effect of oral antidiabetic drugs of the sulfonylurea class. Salicylate competes with a number of drugs for protein binding sites, notably penicillin, thiopental, thyroxine, triiodothyronine, phenytoin, sulfinpyrazone, naproxen, warfarin, methotrexate, and possibly corticosteroids.
Drug/ Laboratory Test Interactions
Salicylate competes with thyroid hormone for binding to plasma proteins, which may be reflected in a depressed plasma T4 value in some patients; thyroid function and basal metabolism are unaffected.
Reye's Syndrome may develop in individuals who have chicken pox, influenza, or flu symptoms. Some studies suggest a possible association between the development of Reye's Syndrome and the use of medicines containing salicylate or aspirin. DISALCID (salsalate) contains a salicylate and therefore is not recommended for use in patients with chicken pox, influenza, or flu symptoms.
Patients on treatment with DISALCID (salsalate) should be warned not to take other salicylates so as to avoid potentially toxic concentrations. Great care should be exercised when DISALCID (salsalate) is prescribed in the presence of chronic renal insufficiency or peptic ulcer disease. Protein binding of salicylic acid can be influenced by nutritional status, competitive binding of other drugs, and fluctuations in serum proteins caused by disease (rheumatoid arthritis, etc.).
Although cross reactivity, induding bronchospasm, has been reported occasionally with non- acetylated salicylates, including salsalate, in aspirin-sensitive patients,8,9 salsalate is less likely than aspirin to induce asthma in such patients.10
Plasma salicylic acid concentrations should be periodically monitored during longterm treatment with DISALCID (salsalate) to aid maintenance of therapeutically effective levels: 10 to 30 mg/100 ml. Toxic manifestations are not usually seen until plasma concentrations exceed 30 mg/l00 ml (see OVERDOSAGE). Urinary pH should also be regularly monitored: sudden acidification, as from pH 6.5 to 5.5, can double the plasma level, resulting in toxicity.
No long-term animal studies have been performed with DISALCID (salsalate) to evaluate its carcinogenic potential.
Use in Pregnancy
Pregnancy Category C: Salsalate and salicylic acid have been shown to be teratogenic and embryocidal in rats when given in doses 4 to 5 times the usual human dose. The effects were not observed at doses twice as great as the usual human dose. There are no adequate and well-controlled studies in pregnant women. DISALCID (salsalate) should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
Labor and Delivery
There exist no adequate and well-controlled studies in pregnant women. Although adverse effects on mother or infant have not been reported with DISALCID (salsalate) use during labor, caution is advised when anti-inflammatory dosage is involved. However, other salicylates have been associated with prolonged gestation and labor, maternal and neonatal bleeding sequelae, potentiation of narcotic and barbiturate effects (respiratory or cardiac arrest in the mother), delivery problems and stillbirth.
It is not known whether salsalate per se is excreted in human milk; salicylic acid, the primary metabolite of DISALCID (salsalate) , has been shown to appear in human milk in concentrations approximating the maternal blood level. Thus, the infant of a mother on DISALCID (salsalate) therapy might ingest in mother†s milk 30 to 80% as much salicylate per kg body weight as the mother is taking. Accordingly, caution should be exercised when DISALCID (salsalate) is administered to a nursing woman.
Safety and effectiveness in pediatric patients have not been established. (See WARNINGS)
Death has followed ingestion of 10 to 30 g of salicylates in adults, but much larger amounts have been ingested without fatal outcome.
The usual symptoms of salicylism - tinnitus, vertigo, headache, confusion, drowsiness, sweating, hyperventilation, vomiting and diarrhea - will occur. More severe intoxication will lead to disruption of electrolyte balance and blood pH, and hyperthermia and dehydration.
Further absorption of DISALCID (salsalate) from the G.I. tract should be prevented by emesis (syrup of ipecac) and if necessary, by gastric lavage.
Fluid and electrolyte imbalance should be corrected by the administration of appropriate I.V. therapy. Adequate renal function should be maintained. Hemodialysis or peritoneal dialysis may be required in extreme cases.
DISALCID is contraindicated in patients hypersensitive to salsalate.
DISALCID (salsalate) is insoluble in acid gastric fluids (< 0.1 mg/ml at pH 1.0), but readily soluble in the small intestine where it is partially hydrolyzed to two molecules of salicylic acid. A significant portion of the parent compound is absorbed unchanged and undergoes rapid esterase hydrolysis in the body; its half-life is about one hour. About 13% is excreted through the kidneys as a glucuronide conjugate of the parent compound, the remainder as salicylic acid and its metabolites. Thus, the amount of salicylic acid available from DISALCID (salsalate) is about 15% less than from aspirin, when the two drugs are administered on a salicylic acid molar equivalent basis (3.6 g salsalate/5 g aspirin).
Salicylic acid biotransformation is saturated at anti-inflammatory doses of DISALCID (salsalate) . Such capacity limited biotransformation results in an increase in the half-life of salicylic acid from 3.5 to 16 or more hours. Thus, dosing with DISALCID (salsalate) twice a day will satisfactorily maintain blood levels within the desired therapeutic range (10 to 30 mg/100 ml) throughout the 12-hour intervals. Therapeutic blood levels continue for up to 16 hours after the last dose. The parent compound does not show capacity-limited biotransformation, nor does it accumulate in the plasma on multiple dosing. Food slows the absorption of all salicylates including DISALCID (salsalate) .
The mode of anti-inflammatory action of DISALCID (salsalate) and other nonsteroidal anti-inflammatory drugs is not fully defined. Although salicylic acid (the primary metabolite of DISALCID (salsalate) ) is a weak inhibitor of prostaglandin synthesis in vitro, DISALCID (salsalate) appears to selectively inhibit prostaglandin synthesis in vivo, providing anti-inflammatory activity equivalent to aspirin and indomethacin. Unlike aspirin, DISALCID (salsalate) does not inhibit platelet aggregation.
The usefulness of salicylic acid, the active in vivo product of DISALCID (salsalate) , in the treatment of arthritic disorders has been established. In contrast to aspirin, DISALCID (salsalate) causes no greater fecal gastrointestinal blood loss than placebo.
See WARNINGS, CONTRAINDICATIONS, and PRECAUTIONS.
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