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Dramamine

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Dram·a·mine (drm-mn)
A trademark for the drug dimenhydrinate.

Dramamine,
trademark now used for two different antiemetics, dimenhyDRINATE, and more recently meclizine (causes less sedation).

dimenhydrinate

Apo-Dimenhydrinate (CA), Dramamine, Dramanate (CA), Gravol (CA), PMS-Dimenhydrinate (CA), Travamine (CA)

Pharmacologic class: Anticholinergic

Therapeutic class: Antiemetic, antivertigo agent

Pregnancy risk category B

Action

Prevents nausea and vomiting by inhibiting vestibular stimulation of chemoreceptor trigger zone and inhibiting stimulation of vomiting center in brain

Availability

Capsules: 50 mg

Capsules (extended-release): 25 mg

Elixir: 12.5 mg/5 ml, 15 mg/5 ml

Injection: 50 mg/ml

Liquid: 12.5 mg/4 ml, 15.62 mg/5 ml

Suppositories: 50 mg, 100 mg

Tablets: 50 mg

Tablets (chewable): 50 mg

Indications and dosages

Prevention and treatment of nausea, vomiting, dizziness, and vertigo

Adults and children ages 12 and older: 50 to 100 mg P.O. q 4 hours (not to exceed 400 mg/day), or 50 to 100 mg P.R. q 6 to 8 hours, or 50 mg I.M. or I.V. q 4 hours p.r.n.

Children ages 6 to 12: 25 to 50 mg P.O. q 6 to 8 hours (not to exceed 150 mg/day), or 25 to 50 mg P.R. q 8 to 12 hours, or 1.25 mg/kg I.M. (37.5 mg/m2) q 6 hours p.r.n.

Children ages 2 to 6: 12.5 to 25 mg P.O. q 6 to 8 hours (not to exceed 75 mg/day)

Contraindications

• Hypersensitivity to drug or tartrazine
• Alcohol intolerance

Precautions

Use cautiously in:
• angle-closure glaucoma, seizure disorders, prostatic hypertrophy.

Administration

• For I.V. use, dilute with dextrose 5% in water or normal saline solution.
• Give each 50-mg I.V. dose over 2 minutes.
Don't administer by I.V. route to premature or low-birth-weight infants. Solution contains benzyl alcohol, which can cause fatal "gasping" syndrome.

RouteOnsetPeakDuration
P.O.15-60 min1-2 hr3-6 hr
I.V.RapidUnknown3-6 hr
I.M.20-30 min1-2 hr3-6 hr
P.R.30-45 minUnknown6-12 hr

Adverse reactions

CNS: drowsiness, dizziness, headache, paradoxical stimulation (in children)

CV: hypotension, palpitations

EENT: blurred vision, tinnitus

GI: diarrhea, constipation, dry mouth

GU: dysuria, urinary frequency

Skin: photosensitivity

Other: decreased appetite, pain at I.M. site

Interactions

Drug-drug. Disopyramide, quinidine, tricyclic antidepressants: increased anticholinergic effects

MAO inhibitors: intensified and prolonged anticholinergic effects

Other CNS depressants (such as antihistamines, opioids sedative-hypnotics): additive CNS depression

Ototoxic drugs (such as aminoglycosides, ethacrynic acid): masking of signs or symptoms of ototoxicity

Drug-diagnostic tests. Allergy skin tests: false-negative results

Drug-behaviors. Alcohol use: increased CNS depression

Patient monitoring

• Assess for lethargy and drowsiness.
• Monitor for dizziness, nausea, and vomiting (possible indicators of drug toxicity).

Patient teaching

• To prevent motion sickness, advise patient to take drug 30 minutes before traveling and to repeat dose before meals and at bedtime.
• Instruct patient to avoid driving and other hazardous activities until he knows how drug affects concentration and alertness.
• Caution patient to avoid alcohol and sedative-hypnotics during therapy.
• As appropriate, review all other significant adverse reactions and interactions, especially those related to the drugs, tests, and behaviors mentioned above.



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