He should take an antihistamine, such as dimenhydrinate.    From Wordnik.com.  [Chapter 29] Reference

· If you still cannot sleep, try taking an antihistamine like promethazine (Phenergan) or dimenhydrinate.    From Wordnik.com.  [Chapter 29] Reference

"Antihistamines like diphenhydramine or dimenhydrinate are good for dealing with mild to severe symptoms," says Knappich.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference

Another less common use of domperidone is for severe motion sickness when over-the-counter medicines like Dramamine (dimenhydrinate) do not work.    From Wordnik.com.  [eHow - Health How To's] Reference

Take an over-the-counter antihistamine, such as meclizine (Bonine), or one containing dimenhydrinate (Dramamine) at least 30 to 60 minutes before traveling.    From Wordnik.com.  [Medlogs - Recent stories] Reference

• Take an over-the-counter antihistamine, such as meclizine (Bonine), or one containing dimenhydrinate (Dramamine) at least 30 to 60 minutes before you travel.    From Wordnik.com.  [LJWorld.com stories: News] Reference

(dimenhydrinate), Stugeron (cinnarizine) and Bonine/Antivert (meclizine).    From Wordnik.com.  [Medlogs - Recent stories] Reference

While waiting in the terminal: Motion sickness is hard to stop after it starts, so if you’re prone to the problem, try the over-the-counter drug dimenhydrinate (Dramamine and generic) or meclizine (Bonine and generic) at least 30 minutes before boarding.    From Wordnik.com.  [How to be healthy at 30,000 feet] Reference

Dosage of dimenhydrinate.    From Wordnik.com.  [Chapter 31] Reference