Eligible patients will be consented and enrolled in the study. Patients will be randomized to receive either Ibuprofen 400mg or Metoclopramide 10mg by mouth. Investigators will be blinded as to which arm of the study the patient is enrolled. Participants will be assessed by Lake Louise Score and Visual Analog Scale for headache and nausea severity immediately prior to ingestion of study medication, and then serially at 30, 60, and 120 minutes following medication ingestion. Standard statistical analysis of the Lake Louise AMS scores and visual analog scales will be used to determine which medication is more effective in treating acute mountain sickness.