Tigan

INDICATIONS Tigan ® is indicated for the treatment of postoperative nausea and vomiting and for nausea associated with gastroenteritis.

DOSAGE AND ADMINISTRATION (See WARNINGS and PRECAUTIONS .) Dosage should be adjusted according to the indication for therapy, severity of symptoms and the response of the patient. Geriatric Patients Dose adjustment such as reducing the total dose administered at each dosing or increasing the dosing interval should be considered in elderly patients with renal impairment (creatinine clearance ≤ 70 mL/min/1.73m 2 ). Final dose adjustment should be based upon integration of clinical efficacy and safety considerations. (See CLINICAL PHARMACOLOGY and PRECAUTIONS ). Patients with Renal Impairment In subjects with renal impairment (creatinine clearance ≤ 70 mL/min/1.73m 2 ), dose adjustment such as reducing the total dose administered at each dosing or increasing the dosing interval should be considered. (See CLINICAL PHARMACOLOGY and DOSAGE AND ADMINISTRATION ). INJECTABLE, 100 mg/mL (Not for use in pediatric patients) Usual Adult Dosage 2 mL (200 mg) t.i.d. or q.i.d. intramuscularly. NOTE: The injectable form is intended for intramuscular administration only; it is not recommended for intravenous use. Intramuscular administration may cause pain, stinging, burning, redness and swelling at the site of injection. Such effects may be minimized by deep injection into the upper outer quadrant of the gluteal region, and by avoiding the escape of solution along the route.

Contraindications The injectable form of Tigan ® is contraindicated in pediatric patients and in patients with known hypersensitivity to trimethobenzamide.

Contraindications The injectable form of Tigan ® is contraindicated in pediatric patients and in patients with known hypersensitivity to trimethobenzamide.

ADVERSE REACTIONS There have been reports of hypersensitivity reactions and Parkinson-like symptoms. There have been instances of hypotension reported following parenteral administration to surgical patients. There have been reports of blood dyscrasias, blurring of vision, coma, convulsions, depression of mood, diarrhea, disorientation, dizziness, drowsiness, headache, jaundice, muscle cramps and opisthotonos. If these occur, the administration of the drug should be discontinued. Allergic-type skin reactions have been observed; therefore, the drug should be discontinued at the first sign of sensitization. While these symptoms will usually disappear spontaneously, symptomatic treatment may be indicated in some cases. For medical advice about adverse reactions contact your medical professional. To report SUSPECTED ADVERSE REACTIONS, contact Par Health at 1-800-828-9393 or FDA at 1-800-FDA-1088 (1-800-332-1088) or www.fda.gov/medwatch.

Mechanism of Action The mechanism of action of Tigan ® as determined in animals is obscure, but may involve the chemoreceptor trigger zone (CTZ), an area in the medulla oblongata through which emetic impulses are conveyed to the vomiting center; direct impulses to the vomiting center apparently are not similarly inhibited. In dogs pretreated with trimethobenzamide HCl, the emetic response to apomorphine is inhibited, while little or no protection is afforded against emesis induced by intragastric copper sulfate.

Description Chemically, trimethobenzamide (HCl) is N-[ p -[2-(dimethylamino)ethoxy]benzyl]-3,4,5-trimethoxybenzamide monohydrochloride. It has a molecular weight of 424.93 and the following structural formula: Single Dose Vials : Each 2-mL single-dose vial contains 200 mg trimethobenzamide hydrochloride compounded with 1 mg sodium citrate and 0.4 mg citric acid as buffers and pH adjusted to approximately 5.0 with sodium hydroxide. Multi-Dose Vials: Each mL contains 100 mg trimethobenzamide hydrochloride compounded with 0.45% phenol as preservative, 0.5 mg sodium citrate and 0.2 mg citric acid as buffers and pH adjusted to approximately 5.0 with sodium hydroxide. Formula1.jpg

How Supplied Tigan ® (trimethobenzamide hydrochloride) is available as follows: NDC 42023-119-25 100 mg/mL in 2 mL Single-Dose Vials, Pack of 25 Product repackaged by: Henry Schein, Inc., Bastian, VA 24314 From Original Manufacturer/Distributor's NDC and Unit of Sale To Henry Schein Repackaged Product NDC and Unit of Sale Total Strength/Total Volume (Concentration) per unit NDC 42023-119-25 Pack of 25 NDC 0404-9964-02 1 2 mL Single Dose Vial in a bag (Vial bears NDC 42023-119-25) 100 mg/mL Rx Only Manufactured for: Endo USA Malvern, PA 19355 © 2025 Endo, Inc. or one of its affiliates. R08/2024 OS118J-01-90-04 3000358J