PREGNANCY SECTION.

Pregnancy. Pregnancy Category C. Animal reproduction studies have not been conducted with orphenadrine. It is also not known whether orphenadrine can cause fetal harm when administered to pregnant woman or can affect reproduction capacity. Orphenadrine should be given to pregnant woman only if clearly needed.

SPL UNCLASSIFIED SECTION.

Pregnancy Category C. Animal reproduction studies have not been conducted with orphenadrine. It is also not known whether orphenadrine can cause fetal harm when administered to pregnant woman or can affect reproduction capacity. Orphenadrine should be given to pregnant woman only if clearly needed.

STORAGE AND HANDLING SECTION.

Store at 20-25C (68-77F) [see USP Controlled Room Temperature]. Dispense in tight, light-resistant container.

WARNINGS SECTION.

WARNINGS. Some patients may experience transient episodes of light-headedness, dizziness or syncope. Orphenadrine may impair the ability of the patient to engage in potentially hazardous activities such as operating machinery or driving motor vehicle; ambulatory patients should therefore be cautioned accordingly.

PRECAUTIONS SECTION.

PRECAUTIONS. Confusion, anxiety and tremors have been reported in few patients receiving propoxyphene and orphenadrine concomitantly. As these symptoms may be simply due to an additive effect, reduction of dosage and/or discontinuation of one or both agents is recommended in such cases.Orphenadrine citrate should be used with caution in patients with tachycardia, cardiac decompensation, coronary insufficiency, cardiac arrhythmias.Safety of continuous long-term therapy with orphenadrine has not been established. Therefore, if orphenadrine is prescribed for prolonged use, periodic monitoring of blood, urine and liver function values is recommended.. Pregnancy. Pregnancy Category C. Animal reproduction studies have not been conducted with orphenadrine. It is also not known whether orphenadrine can cause fetal harm when administered to pregnant woman or can affect reproduction capacity. Orphenadrine should be given to pregnant woman only if clearly needed.. Pediatric Use. Safety and effectiveness in pediatric patients have not been established.

ADVERSE REACTIONS SECTION.

ADVERSE REACTIONS. Adverse reactions of orphenadrine are mainly due to the mild anti-cholinergic action of orphenadrine, and are usually associated with higher dosage. Dryness of the mouth is usually the first adverse effect to appear. When the daily dose is increased, possible adverse effects include: tachycardia, palpitation, urinary hesitancy or retention, blurred vision, dilatation of pupils, increased ocular tension, weakness, nausea, vomiting, headache, dizziness, constipation, drowsiness, hypersensitivity reactions, pruritus, hallucinations, agitation, tremor, gastric irritation, and rarely urticaria and other dermatoses. Infrequently, an elderly patient may experience some degree of mental confusion. These adverse reactions can usually be eliminated by reduction in dosage. Very rare cases of aplastic anemia associated with the use of orphenadrine tablets have been reported. No causal relationship has been established.

CLINICAL PHARMACOLOGY SECTION.

CLINICAL PHARMACOLOGY. The mode of therapeutic action has not been clearly identified, but may be related to its analgesic properties. Orphenadrine citrate does not directly relax tense muscles in man. Orphenadrine citrate also possesses anti-cholinergic actions.

CONTRAINDICATIONS SECTION.

CONTRAINDICATIONS. Orphenadrine citrate extended-release tablets are contraindicated in patients with glaucoma, pyloric or duodenal obstruction, stenosing peptic ulcers, prostatic hypertrophy or obstruction of the bladder neck, cardio-spasm (mega-esophagus) and myasthenia gravis.Orphenadrine citrate tablets are contraindicated in patients who have demonstrated previous hypersensitivity to the drug.

DESCRIPTION SECTION.

DESCRIPTION. Orphenadrine citrate is the citrate salt of orphenadrine. It occurs as white, crystalline powder having bitter taste. It is practically odorless; sparingly soluble in water, slightly soluble in alcohol. The chemical name of orphenadrine citrate is (+-)-N,N-Dimethyl-2-[(o-methyl--phenylbenzyl)oxy]ethylamine citrate (1:1) having molecular formula C18H23NOoC6H8O7 and molecular weight of 461.51. It has the following structural formula:Each tablet for oral administration contains 100 mg orphenadrine citrate.Each Orphenadrine citrate extended-release tablet contains the following inactive ingredients: hydroxypropyl methylcellulose, lactose monohydrate and magnesium stearate.. Orphenadrine Citrate Chemical Structure.

DOSAGE & ADMINISTRATION SECTION.

DOSAGE AND ADMINISTRATION. Adults. Two tablets per day; one in the morning and one in the evening.

DRUG ABUSE AND DEPENDENCE SECTION.

DRUG ABUSE AND DEPENDENCE. Orphenadrine has been chronically abused for its euphoric effects. The mood elevating effects may occur at therapeutic doses of orphenadrine.

HOW SUPPLIED SECTION.

HOW SUPPLIED. Orphenadrine citrate extended-release tablets 100 mg are round, white tablets, debossed GG 931 on one side and plain on the reverse side and are supplied as:NDC 21695-099-14 in bottles of 14 tabletsNDC 21695-099-20 in bottles of 20 tabletsNDC 21695-099-28 in bottles of 28 tabletsNDC 21695-099-30 in bottles of 30 tabletsNDC 21695-099-56 in bottles of 56 tabletsNDC 21695-099-60 in bottles of 60 tablets. Store at 20-25C (68-77F) [see USP Controlled Room Temperature]. Dispense in tight, light-resistant container.. Manufactured bySandoz Inc.Princeton, NJ 08540for GAVIS Pharmaceuticals, LLC400 Campus DriveSomerset, NJ 08873Repackaged by:Rebel Distributors CorpThousand Oaks, CA 91320.

INDICATIONS & USAGE SECTION.

INDICATIONS AND USAGE. Orphenadrine citrate extended-release tablets are indicated as an adjunct to rest, physical therapy, and other measures for the relief of discomfort associated with acute painful musculoskeletal conditions.

OVERDOSAGE SECTION.

OVERDOSAGE. Orphenadrine is toxic when overdosed and typically induces anticholinergic effects. In review of orphenadrine toxicity, the minimum lethal dose was found to be to grams for adults; however, the range of toxicity is variable and unpredictable. Treatment for orphenadrine overdose is evacuation of stomach contents (when necessary), charcoal at repeated doses, intensive monitoring, and appropriate supportive treatment of any emergent anticholinergic effects.

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL.

Principal Display Panel. OrphenadrineCitrateExtended-ReleaseTablets100 mgRx only. Orphenadrine Citrate 100mg.