Many drugs can affect the sensitivity and accuracy of vestibular function test results: 1. Antidepressants, sedatives and tranquilizers, and vestibular depressants can cause test results similar to cerebellar and brainstem disorders. 2. Diuretics, especially tachypnea, can cause transient vestibular hypofunction. 3. Alcohol, marijuana, and aspirin can cause false results within 24 hours of taking the drug. A sufficient amount of alcohol can also cause gaze nystagmus. Therefore, these drugs should not be taken within 48 hours of the examination. If these drugs are taken, caution must be exercised in interpreting the test results.