Guaifenesin (glyceryl guaiacolate) has the chemical name 3-(2-methoxyphenoxy)-1,2-propanediol. Its molecular formula is C10H14O4 with a molecular weight of 198.21. It is a white or slightly gray crystalline substance with a slightly bitter aromatic taste. One gram dissolves in 20 mL water at 25°C; it is freely soluble in ethanol. Guaifenesin is readily absorbed from the GI tract and is rapidly metabolized and excreted in the urine. Guaifenesin has a plasma half-life of one hour. The major urinary metabolite is β-(2-methoxyphenoxy) lactic acid.
ORGANIDIN® NR (guaifenesin) is an expectorant available for oral administration as:
Tablets — each containing 200 mg guaifenesin, USP.
Other ingredients: Corn starch, croscarmellose sodium, FD&C Red No. 40, magnesium stearate, microcrystalline cellulose.
Organidin NR - Clinical Pharmacology
ORGANIDIN® NR (guaifenesin) is an expectorant, the action of which promotes or facilitates the removal of secretions from the respiratory tract. By increasing sputum volume and making sputum less viscous, guaifenesin facilitates expectoration of retained secretions.
Indications and Usage for Organidin NR
ORGANIDIN® NR: Helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus, drain bronchial tubes and make coughs more productive. Helps loosen phlegm and thin bronchial secretions in patients with stable chronic bronchitis.
Contraindications
Hypersensitivity to any of the ingredients.
Precautions
Carcinogenesis, Mutagenesis, Impairment of Fertility: Animal studies to assess the long-term carcinogenic and mutagenic potential or the effect on fertility in animals or humans have not been performed.
Pregnancy:
Teratogenic Effects—Pregnancy Category C: Animal reproduction studies have not been conducted. Safe use in pregnancy has not been established relative to possible adverse effects on fetal development. Therefore, these products should not be used in pregnant patients unless, in the judgment of the physician, the potential benefits outweigh possible hazards.
Nursing Mothers: It is not known whether guaifenesin is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when these products are administered to a nursing woman and 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.
Laboratory Test Interactions: Guaifenesin or its metabolites may cause color interference with the VMA (vanillylmandelic acid) test for catechols. It may also falsely elevate the level of urinary 5-HIAA (5-hydroxyindoleacetic acid) in certain serotonin metabolite chemical tests because of color interference.
Adverse Reactions
To report SUSPECTED ADVERSE REACTIONS, contact Meda Pharmaceuticals Inc. at 1-800-526-3840 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
Guaifenesin is well tolerated and has a wide margin of safety. Side effects have been generally mild and infrequent. Nausea and vomiting are the side effects that occur most commonly. Dizziness, headache, and rash (including urticaria) have been reported rarely.
Overdosage
In massive overdosage the stomach should be emptied (emesis and/or gastric lavage) and further absorption prevented. Treatment is symptomatic and supportive.
The acute toxicity of guaifenesin is low and overdosage is unlikely to produce serious toxic effects. In laboratory animals no toxicity resulted when guaifenesin was administered by stomach tube in doses up to 5 grams/kg.
Organidin NR Dosage and Administration
ORGANIDIN® NR (guaifenesin)
Tablets — Adults and children 12 years of age and older: One to 2 tablets (200 mg to 400 mg) every four hours, not to exceed 2400 mg (12 tablets) in 24 hours.
PATIENTS SHOULD BE ADVISED TO KEEP THESE AND ALL DRUGS OUT OF THE REACH OF CHILDREN AND TO SEEK PROFESSIONAL ASSISTANCE OR CONTACT A POISON CONTROL CENTER IMMEDIATELY IN CASE OF ACCIDENTAL OVERDOSE.
How is Organidin NR Supplied
ORGANIDIN® NR (guaifenesin)
Tablets — Each round, scored, rose-colored tablet contains 200 mg guaifenesin USP—available in bottles of 100 (NDC 0037-4312-01)
STORAGE — Store at controlled room temperature 20°-25°C (68°-77°F). Protect tablets from moisture. Keep bottle tightly closed.
To report SUSPECTED ADVERSE REACTIONS, contact Meda Pharmaceuticals Inc. at 1-800-526-3840 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
MEDA PHARMACEUTICALS
Meda Pharmaceuticals Inc.
Somerset, New Jersey 08873-4120
IN-046J2-08 Rev. 11/09
Package Label - Principal Display Panel – 100 Tablet Bottle, Organidin NR Tablets
NDC 0037-4312-01
100 Tablets
Organidin® NR
Tablets (guaifenesin)
Expectorant
Each tablet§ contains:
Guaifenesin USP 200 mg
Other ingredients: croscarmellose sodium,
FD&C Red #40, magnesium stearate,
microcrystalline cellulose, starch.
§Assayed by a procedure other than that
specified in the USP.
This product labeled for dispensing on
prescription only.
Meda
Pharmaceuticals®
LB-046J2-06 Rev. 1/09
See package insert for dosing
information and directions for use.
Store at controlled room
temperature 20°-25°C
(68°-77°F).
Protect from moisture.
Dispense in tight container.
Meda Pharmaceuticals®
Meda Pharmaceuticals Inc.
Somerset, New Jersey 08873-4120
ORGANIDIN NR guaifenesin tablet |
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ORGANIDIN NR guaifenesin liquid |
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Revised: 06/2011Meda Pharmaceuticals Inc.