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PubMed1987

Treatment of severe motion sickness with antimotion sickness drug injections.

This report concerns the use of intramuscular injections of scopolamine, promethazine, and dramamine to treat severely motion sick individuals participating in parabolic flight experiments. The findings indicate that a majority of individuals received benefit from 50-mg injections of promethazine or 0.5mg-injections of scopolamine. By contrast, 50-mg injections of dramamine and 25-mg injections of promethazine were nonbeneficial. The use of antimotion drug injections for treating space motion sickness is discussed.

Dimenhydrinate↗

PubMed1993

[Clinical and experimental studies on royal made ping an dan in preventing motion sickness].

Royal Made Ping An Dan (PAD) is a royal clandestine prescription of the Qing Dynasty Imperial hospital for emperors, empresses, ministers, imperial maids and eunuchs. Experimental study confirmed; (1) PAD had apparent peripheral effect in inhibiting vomiting and improving mental state (P < 0.05). (2) PAD possessed markedly sedative effect (P < 0.05). (3) PAD was able to strengthen the defence ability of gastric mucosa and decreased its damage induced by chemical irritation. (4) PAD could markedly relieve the spasm of intestinal smooth muscle in vitro. (5) PAD could inhibit the growth of common pathogenic bacteria in intestine and stomach such as B. coli and B. dysenteriae. (6) The study of toxicology suggested that PAD was safe for clinical use. The clinical results showed that PAD possessed the effect in preventing 274 persons on motion sickness. The total effective rate of PAD group was 83.9%, while that of Dramamine group was 60.8%. PAD revealed better effect than that of Dramamine. Therefore, the authors realize that PAD is a better preventive drug for motion sickness.

Adolescent↗

PubMed2003

Dimenhydrinate produces a conditioned place preference in rats.

Dimenhydrinate (DMH; trade names Gravol and Dramamine) is a compound of diphenhydramine (DP) and 8-chlorotheophylline in equimolar ratios. DMH has been reported to be abused by humans for its euphoric and hallucinogenic properties but few studies have evaluated its reinforcing effects in animals. To evaluate the hypothesis that DMH and its constituents DP and 8-chlorotheophylline are rewarding in animals, rats were tested for conditioned place preference (CPP). The paradigm consisted of pre-exposure (three 15-min sessions of access to both sides of the chamber), conditioning [eight 30-min pairings of one side with drug (four sessions) and, on alternate days, the other side with vehicle (four sessions)] and test phases (three 15-min sessions of access to both sides of the chamber). Significant preferences for the drug-paired location were found on test session one after conditioning with 60.0, but not 25.0, 40.0 or 50.0 mg/kg of DMH, and after conditioning with 37.8 but not 27.0 or 32.4 mg/kg of DP. No preference was found after conditioning with 23.0, 27.6 or 32.2 mg/kg of 8-chlorotheophylline. All three drugs stimulated locomotor activity during conditioning sessions and DMH and DP showed sensitization over conditioning sessions. DMH doses that showed sensitization (25.0 and 40.0 mg/kg) were lower than the dose (60.0 mg/kg) that produced a CPP revealing a dissociation of locomotor stimulating versus rewarding effects. Results reveal that DMH and DP have rewarding properties, although the molar equivalent dose-response curve for DP appeared to be further to the right than that for DMH. Future investigations into the neurotransmitter systems modulating this effect are awaited.

Animals↗

PubMed2002

Mechanisms and abuse liability of the anti-histamine dimenhydrinate.

The over-the-counter anti-emetic dimenhydrinate (DMH) (Gravol or Dramamine) has been reported to be abused for non-medicinal purposes. Street drug users abuse DMH for the acute effects of euphoric sensations and hallucinations, while psychiatric patients abuse DMH for its anxiolytic or anti-cholinergic effects. DMH is an H(1) histamine receptor antagonist, but it interacts either directly or indirectly with other neurotransimitter systems, including those using acetylcholine, serotonin, norepinephrine, dopamine, opioids or adenosine. Animal behavioural studies, such as self-administration, conditioned place preference, drug discrimination, and modulation of operant responding, show that anti-histamines have abuse potential. Further support comes from reports of acute and chronic abuse of DMH by humans. Collectively, results confirm the abuse liability of DMH.

Animals↗

PubMed1983

Contact dermatitis caused by diphenhydramine hydrochloride.

Three cases of contact dermatitis caused by an ethanolamine antihistamine, diphenhydramine hydrochloride (Benadryl), are described. Patients who develop contact dermatitis from it should avoid its oral or parenteral administration because they may develop a localized or generalized flare of dermatitis. Dimenhydrinate (Dramamine), clemastine fumarate (Tavist), carbinoxamine maleate (Clistin-D), and doxylamine succinate (Decapryn) are also ethanolamine antihistamines. Since they may cross-react with diphenhydramine hydrochloride, they should be avoided in sensitive patients.

Child↗

PubMed1991

Methotrimeprazine versus meperidine and dimenhydrinate in the treatment of severe migraine: a randomized, controlled trial.

STUDY OBJECTIVE: To compare the effectiveness of IM administration of methotrimeprazine, a non-narcotic, nonaddicting phenothiazine derivative, with that of a combination of meperidine and dimenhydrinate in the treatment of severe migraine. DESIGN: Double-blind, randomized, controlled trial. SETTING: University hospital emergency department. PARTICIPANTS: Consecutive adult patients with migraine who met eligibility criteria. INTERVENTIONS: Random allocation to receive IM injections of either 37.5 mg methotrimeprazine (Levoprome, Nozinan) or 75 mg meperidine (Demerol) combined with 50 mg dimenhydrinate (Dramamine, Gravol). MEASUREMENTS AND MAIN RESULTS: The 37 patients in each group who completed the study were similar in all demographic and clinical characteristics. There were no statistical differences in pain intensity one hour after treatment, change in pain intensity, or pain relief as measured on a visual-analog scale; need for additional analgesia; persistence of nausea or vomiting; adverse effects; or follow-up status, except for prolonged drowsiness, in the group receiving methotrimeprazine. CONCLUSION: Methotrimeprazine is comparable to meperidine with dimenhydrinate for treating severe migraine and may be considered an effective, nonaddicting, IM alternative to narcotics for the management of this problem.

Adolescent↗

PubMed1993

Fatality secondary to massive overdose of dimenhydrinate.

A 19-year-old woman presented with status epilepticus and ventricular dysrhythmias less than one hour after ingesting 5,000 mg dimenhydrinate (Dramamine). Aggressive resuscitation including the use of physostigmine stabilized the cardiac rhythm; however, she suffered a severe neurologic deficit. Development of ischemic and infarcted bowel necessitated colonic resection. After surgery, her condition worsened, and after demonstration of minimal cerebral activity, supportive measures were withdrawn, and she died. Overdose with dimenhydrinate and diphenhydramine, both of which are over-the-counter drugs, can result in rapid central nervous system stimulation, including status epilepticus. Death can occur within two hours. To our knowledge, this is the first reported fatality resulting from ingestion of dimenhydrinate.

Adult↗

PubMed1991

Colic medication and apparent life-threatening events.

Eight infants with histories of apnea and cyanosis were referred to the Southwest SIDS Research Institute for evaluation of apparent life threatening events (ALTE). All of the infants had been treated for colic with a 1:1 concentration of dimenhydrinate (Dramamine) and phenobarbital, hyoscyamine sulfate, atropine sulfate and scopolamine hydrobromide (Donnatal). The medication was pre-mixed by local pharmacists. A comprehensive work-up failed to reveal a cause for the ALTE in any infant. The Dramamine/Donnatal mixture was withdrawn and polygraphic evaluation was conducted. Cardiorespiratory abnormalities were identified in all eight infants and significant gastroesophageal reflux (GER) was documented in four. The possibility that colic medication contributes to cardiorespiratory instability and GER in vulnerable infants requires serious consideration and further evaluation.

Atropine↗

PubMed1990

The importance of domperidone (Motilium) in controlling postoperative nausea and vomiting.

Comparative study was performed for assessing the postoperative anti-emetic and emesis preventive effect of domperidone. It has been found that the emesis preventive effect of Motilium tablet is identical with the effect of the well known Daedalon (Dramamin) and Torecan. From the therapeutic aspect it is of value especially in controlling nausea and in the prevention of subsequent vomiting following the use of rectal anti-emetics. This difference is attributable to the oral route of administration. Considering the lack of toxic effects domperidone is the most favourable.

Administration, Oral↗

PubMed1978

Discriminable effects of antihistamine drugs.

Rats were trained to discriminate drug vs. no-drug in a shock-escape T-maze task; a right turn was required when rats were drugged and a left turn when undrugged. The three antihistamine drugs pyrilamine, dimenhydrinate (Dramamine) and diphenhydramine (Benadryl) were discriminated after an average of 20 training sessions indicating that their effects were only moderately discriminable. After criterion performance was achieved under the training conditions, substitution tests were conducted during which rats received a novel drug and were then run in the maze with both goals accessible. Rats trained with antihistamine drugs made drug choices during tests with other antihistamines. Rats trained with other types of drugs made no-drug choices during tests with antihistamines. The results suggest that the antihistamines share a discriminable effect which is relatively unique to that class of drugs.

Animals↗

PubMed1995

Dimenhydrinate pretreatment in patients receiving intra-arterial ioxaglate: effect on nausea and vomiting.

OBJECTIVE: To determine the effectiveness of the antihistamine dimenhydrinate (Dramamine) as a prophylactic agent against the nausea and vomiting that occasionally accompany the use of ioxaglate. PATIENTS AND METHODS: Three hundred patients (165 men and 135 women, ranging in age from 18 to 89 [mean 62] years) undergoing noncoronary arteriography received dimenhydrinate or placebo before the injection of the low-osmolality contrast material ioxaglate (Hexabrix). The patients were observed and questioned about nausea and vomiting, as well as many other possible reactions to the contrast material. RESULTS: There were no statistical differences in the occurrence of adverse reactions between the groups receiving dimenhydrinate and placebo (chi 2 or Fisher's exact test, p > 0.05). CONCLUSION: Dimenhydrinate, as administered in this study, was ineffective as a prophylactic agent against adverse reactions accompanying administration of ioxaglate.

Adolescent↗

PubMed1950