Dramamine (Dimenhydrinate)

Dramamine is used to treat sea and air sickness, Meniere's disease, to prevent and treat symptoms of vestibular and labyrinth disorders (dizziness, nausea, vomiting, except for symptoms caused by anticancer chemotherapy). Active substance of the drug is Dimenhydrinate, it blocks histamine H1-receptors and m-cholinergic receptors of central nervous system, inhibits hyperstimulated functioning of the labyrinth. Dramamine reduces dizziness, has antiemetic, anti-vomiting, sedative, and mild anti-allergic effect. The results of its action are manifested in 20-30 minutes and continue for 4-6 hours.
To prevent sea or air sickness take Dramamine at least 30 minutes before the planned trip. Adults and adolescents under 14 years of age should take 50-100 mg, children between 2-6 years of age should take 25-50 mg, and children between 7-14 years should take 50 mg dose of Dramamine. For vestibular disorders adults should take 50-100 mg (each for hours if necessary) but not more than 400 mg a day; for children reduction of the dose is needed. Take exactly as prescribed by your doctor. Take with a full glass of water.
Dramamine cannot be used in the patients with hypersensitivity to the components of the drug, asthma, epilepsy and in children under two years of age.
Besides possible allergic reaction (facial swelling, hives, rash) Dramamine may cause
drowsiness or dizziness,
restlessness,
tiredness,
insomnia,
inability to concentrate attention,
excitation,
nervousness,
or insomnia,
blurred or double vision,
weakness of night and color vision,
accommodation disorders,
dry mouth,
nose, or throat,
decreased appetite,
nausea,
vomiting, or diarrhea,
difficulty urinating,
or an irregular or fast heartbeat.
If you experience side effects listed above and they become bothersome inform your doctor about it.
Never take a double dose of this medication. If it is almost time of the next dose just skip the missed portion and continue to take the medicine according to the schedule. 
Dramamine overdose symptoms may include fatigue, drowsiness, headache, dizziness, itching and skin vasodilation, mydriasis (excessive dilation of the pupil), slow reaction of pupils to light, accommodation disturbances, nystagmus (involuntary eye movement), amyotonia and tendon reflexes, urinary retention, tachycardia, changes in blood pressure. Symptoms of depressed central nervous system caused by Dramamine may include slurred speech, orientation in time and space, ataxia, coma, respiratory depression, excitation of the central nervous system; in children hallucinations, convulsions, and death may occur.
Store Dramamine at room temperature between 20 and 25 degrees C (68 and 77 degrees F) away from moisture and heat.