Donnatal Tablets: Package Insert / Prescribing Info

Donnatal Tablets Description

Donnatal® Tablets

Each Donnatal® Tablet contains:

Phenobarbital, USP..... 16.2 mg
Hyoscyamine Sulfate, USP..... 0.1037 mg
Atropine Sulfate, USP .....0.0194 mg
Scopolamine Hydrobromide, USP .....0.0065 mg

Inactive Ingredients

Dibasic Calcium Phosphate Dihydrate, Compressible Sugar, Microcrystalline Cellulose, Sodium Starch Glycolate, Stearic Acid, Silicon Dioxide Colloidal, Magnesium Stearate.

Donnatal Tablets - Clinical Pharmacology

This drug combination provides natural belladonna alkaloids in a specific, fixed ratio combined with phenobarbital to provide peripheral anticholinergic/antispasmodic action and mild sedation.

Contraindications

• glaucoma;
• obstructive uropathy (for example, bladder neck obstruction due to prostatic hypertrophy);
• obstructive disease of the gastrointestinal tract (as in achalasia, pyloroduodenal stenosis, etc.);
• paralytic ileus, intestinal atony of the elderly or debilitated patient;
• unstable cardiovascular status in acute hemorrhage;
• severe ulcerative colitis especially if complicated by toxic megacolon;
• myasthenia gravis;
• hiatal hernia associated with reflux esophagitis;
• in patients with known hypersensitivity to any of the ingredients.

Phenobarbital is contraindicated in acute intermittent porphyria and in those patients in whom phenobarbital produces restlessness and/or excitement.

Warnings

Donnatal® Tablets can cause fetal harm when administered to a pregnant woman. Animal reproduction studies have not been conducted with Donnatal® Tablets. If this drug is used during pregnancy, or if the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to the fetus.

In the presence of a high environmental temperature, heat prostration can occur with belladonna alkaloids (fever and heatstroke due to decreased sweating).

Diarrhea may be an early symptom of incomplete intestinal obstruction, especially in patients with ileostomy or colostomy. In this instance, treatment with this drug would be inappropriate and possibly harmful.

Donnatal® Tablets may produce drowsiness or blurred vision. The patient should be warned, should these occur, not to engage in activities requiring mental alertness, such as operating a motor vehicle or other machinery, and not to perform hazardous work.

Phenobarbital may decrease the effect of anticoagulants, and necessitate larger doses of the anticoagulant for optimal effect. When the phenobarbital is discontinued, the dose of the anticoagulant may have to be decreased.

Phenobarbital may be habit forming and should not be administered to individuals known to be addiction prone or to those with a history of physical and/or psychological dependence upon drugs.

Since barbiturates are metabolized in the liver, they should be used with caution and initial doses should be small in patients with hepatic dysfunction.

Precautions

Adverse Reactions/Side Effects

Adverse reactions may include xerostomia; urinary hesitancy and retention; blurred vision; tachycardia; palpitation; mydriasis; cycloplegia; increased ocular tension; loss of taste sense; headache; nervousness; drowsiness; weakness; dizziness; insomnia; nausea; vomiting; impotence; suppression of lactation; constipation; bloated feeling; musculoskeletal pain; severe allergic reaction or drug idiosyncrasies, including anaphylaxis, urticaria, and other dermal manifestations; and decreased sweating.

Acquired hypersensitivity to barbiturates consists chiefly in allergic reactions that occur especially in persons who tend to have asthma, urticaria, angioedema, and similar conditions. Hypersensitivity reactions in this category include localized swelling, particularly of the eyelids, cheeks, or lips, and erythematous dermatitis. Rarely, exfoliative dermatitis (e.g. Stevens-Johnson syndrome and toxic epidermal necrolysis) may be caused by phenobarbital and can prove fatal. The skin eruption may be associated with fever, delirium, and marked degenerative changes in the liver and other parenchymatous organs. In a few cases, megaloblastic anemia has been associated with the chronic use of phenobarbital.

Phenobarbital may produce excitement in some patients, rather than a sedative effect.

To report SUSPECTED ADVERSE REACTIONS, contact Concordia Pharmaceuticals at 1-877-370-1142 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Drug Abuse and Dependence

Overdosage

The signs and symptoms of overdose are headache, nausea, vomiting, blurred vision, dilated pupils, hot and dry skin, dizziness, dryness of the mouth, difficulty in swallowing, and CNS stimulation. Treatment should consist of gastric lavage, emetics, and activated charcoal. If indicated, parenteral cholinergic agents such as physostigmine or bethanechol chloride should be used.

Donnatal Tablets Dosage and Administration

The dosage of Donnatal® Tablets should be adjusted to the needs of the individual patient to assure symptomatic control with a minimum of adverse effects.

Donnatal® Tablets - Adults: One or two Donnatal® Tablets three or four times a day according to condition and severity of symptoms.

How is Donnatal Tablets supplied

Donnatal® Tablets are supplied as: white, D-shaped, flat faced beveled edge tablets embossed "D" on one side and debossed "Donnatal" on the other side.

• Bottles of 100 tablets - NDC 59212-425-10.
• Bottles of 4 tablets - NDC 59212-425-04.

Store at 20°-25°C (68°-77°F) [See USP Controlled Room Temperature]. Protect from light and moisture.

Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure.

DEA EXEMPT PRODUCT

Mfd. for:
Concordia Pharmaceuticals

Distributed by:
Amdipharm Limited
17 Northwood House
Dublin 9, Ireland

Revised: 02/20

PRINCIPAL DISPLAY PANEL

NDC 59212-425-10 100 Tablets

Donnatal®
(Phenobarbital, Hyoscyamine Sulfate, Atropine Sulfate, Scopolamine Hydrobromide)

Each tablet contains:

Phenobarbital, USP..... 16.2 mg
Hyoscyamine Sulfate, USP..... 0.1037 mg
Atropine Sulfate, USP .....0.0194 mg
Scopolamine Hydrobromide, USP .....0.0065 mg

Rx only