Anti-Histamines
Examples: Gravol, Histanil and Life Brand Anti-NauseantHow they work: Classified as anti-histamines, these medications are to be taken before travelling. They also block the cholinergic transmitters in the brain that control nerve impulses in the gastrointestinal tract and vomiting centre. Dimenhydrinate (the active ingredient in Gravol and Life Brand) offers relief for six to eight hours. Promethazine (the active ingredient in Histanil) may be effective for up to 12 hours, but causes more sedation than dimenhydrinate.Need to know: Side effects include drowsiness, dry mouth and blurred vision; avoid alcohol and, if you are taking other medications, check with your doctor or pharmacist about interactions. If you are pregnant or lactating, these three products are all safe choices, says Thomson.Try: Gravol Taste Free Liquid Gel Capsules, $12, well.ca
