How to prevent headaches after air travel<br>Try ibuprofen. Oftentimes, headaches that occur during or after flight are due to a sudden change in altitude. The painkiller ibuprofen may effectively prevent altitude related headaches before they begin.
Ibuprofen is a type of painkiller
( z1 painkiller :mod ( z2 type ) :domain ( z3 ibuprofen ) )