Dimenhydrinate

Tablet · Oral, Intramuscular, Intravenous

Over the counter

Uses

Dimenhydrinate Injection, USP is indicated for the prevention and treatment of nausea, vomiting, or vertigo of motion sickness.

Warnings

Caution should be used when dimenhydrinate is given in conjunction with certain antibiotics that may cause ototoxicity, since dimenhydrinate is capable of masking ototoxic symptoms, and an irreversible state may be reached. This drug may impair the mental and/or physical abilities required for the performance of potentially hazardous tasks, such as driving a vehicle or operating machinery. The concomitant use of alcohol or other central nervous system depressants may have an additive effect. Therefore, patients should be warned accordingly. Dimenhydrinate should be used with caution in patients having conditions which might be aggravated by anticholinergic therapy (i.e., prostatic hypertrophy, stenosing peptic ulcer, pyloroduodenal obstruction, bladder neck obstruction, narrow-angle glaucoma, bronchial asthma, or cardiac arrhythmias). The preparation should not be injected intra-arterially. Pediatric Patients For infants and children especially, antihistamines in overdosage may cause hallucinations, convulsions, or death. As in adults, antihistamines may diminish mental alertness in pediatric patients. In the young child, particularly, they may produce excitation (see CONTRAINDICATIONS ). Pediatric Patients For infants and children especially, antihistamines in overdosage may cause hallucinations, convulsions, or death. As in adults, antihistamines may diminish mental alertness in pediatric patients. In the young child, particularly, they may produce excitation (see CONTRAINDICATIONS ).

Dosage and administration

Dimenhydrinate in the injectable form is indicated when the oral form is impractical. Adults Nausea or vomiting may be expected to be controlled for approximately 4 hours with 50 mg, and prevented by a similar dose every 4 hours. Its administration may be attended by some degree of drowsiness in some patients, and 100 mg every 4 hours may be given in conditions in which drowsiness is not objectionable or is even desirable. For intramuscular administration, each milliliter (50 mg) of solution is injected as needed, but for intravenous administration, each milliliter (50 mg) of solution must be diluted in 10 mL of 0.9% Sodium Chloride Injection, USP and injected over a period of 2 minutes. Pediatric For intramuscular administration, 1.25 mg/kg of body weight or 37.5 mg/m 2 of body surface area is administered four times daily. The maximum dose should not exceed 300 mg daily (see CONTRAINDICATIONS ). Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. Adults Nausea or vomiting may be expected to be controlled for approximately 4 hours with 50 mg, and prevented by a similar dose every 4 hours. Its administration may be attended by some degree of drowsiness in some patients, and 100 mg every 4 hours may be given in conditions in which drowsiness is not objectionable or is even desirable. For intramuscular administration, each milliliter (50 mg) of solution is injected as needed, but for intravenous administration, each milliliter (50 mg) of solution must be diluted in 10 mL of 0.9% Sodium Chloride Injection, USP and injected over a period of 2 minutes. Pediatric For intramuscular administration, 1.25 mg/kg of body weight or 37.5 mg/m 2 of body surface area is administered four times daily. The maximum dose should not exceed 300 mg daily (see CONTRAINDICATIONS ). Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.

Label text from the FDA structured product label by Fresenius Kabi USA, LLC (revised Jan 15, 2025). Long sections are shortened; the complete label is on DailyMed.

Active ingredients

Dimenhydrinate NDC products (4)

NDCStrength & formLabelerType
63323-366Dimenhydrinate 50 mg/mL
Injection, Solution
Fresenius Kabi USA, LLCANDA
69842-206Dimenhydrinate 50 mg/1
Tablet
CVS Pharmacy, Inc.OTC MONOGRAPH DRUG
70000-0404Dimenhydrinate 50 mg/1
Tablet
LEADER/ Cardinal Health 110, Inc.OTC MONOGRAPH DRUG
0904-6772Dimenhydrinate 50 mg/1
Tablet
Major PharmaceuticalsOTC MONOGRAPH DRUG

Frequently asked questions

What is Dimenhydrinate used for?

Dimenhydrinate Injection, USP is indicated for the prevention and treatment of nausea, vomiting, or vertigo of motion sickness.

Who makes Dimenhydrinate?

Dimenhydrinate is listed by 4 labelers in the FDA NDC directory, including Fresenius Kabi USA, LLC, CVS Pharmacy, Inc., LEADER/ Cardinal Health 110, Inc., Major Pharmaceuticals.