Dimenhydrinate (Dramamine, but brand names vary) is an antihistamine drug that can be purchased at most grocery stores and pharmacies. These drugs block receptors in the brain associated with nausea and vomiting. You can purchase dramamine in two tablet forms — drowsy and non-drowsy. Non-drowsy is best for amusement parks. If you are taking a train or a plane long distance and can sleep, the drowsy kind will work well.  To prevent motion sickness, the first dose should be taken 30 minutes to one hour before you go to the amusement park. Adults and children older than age 12 can usually take dimenhydrinate every four to six hours as needed to prevent or treat motion sickness. Children under 12 can usually be given dimenhydrinate every six to eight hours or as needed to prevent or treat motion sickness, but talk to your child's doctor before using medications on young children. There are a few other similar medications used for motion sickness. check with your doctor or pharmacist on which medication may be best for you. You'll need to see a doctor to get a prescription for this medication. Generally, this medication is saved for those who aren't helped by dramamine. Most of the time, scopolamine is administered in a patch form.  Talk to your doctor about potential side effects of this medication, which can include drowsiness, disorientation, dry mouth, or hallucinations.  People with glaucoma or certain other medical problems may not be able to use scopolamine, so make sure to tell your doctor about any medical problems you have. The patch should be applied as directed on the package. Normally, it should be placed on the back of the ear, at least four hours prior to when it is actually needed. Wash behind your ear before applying. Remove the patch from the protective packaging. Place on the skin. Wash your hands thoroughly afterwards. Leave on for as long as you need it or as long as the package prescribes. Ginger (zingiber officinale) is cheap and effective. You can consume ginger raw or in lozenge/pill form....

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Write a summary of the previous text in Vietnamese:
Sử dụng thuốc chống say xe Dramamine không kê toa. Sử dụng miếng dán Scopolamine. Sử dụng thuốc dán Scopolamine. Bổ sung dược phẩm có vị gừng.