In medicine, a cohort study is often undertaken to obtain evidence to try to refute the existence of a suspected association between cause and effect; failure to refute a hypothesis often strengthens confidence in it.
Rifampin (Rifadin Â®) is a prescription antibiotic that comes in oral (taken by mouth) and injectable forms. Oral rifampin is approved for the following uses: 1  To treat tuberculosis, usually along with other tuberculosis medications.
Modafinil is a medication that promotes wakefulness. Modafinil is used to treat excessive sleepiness caused by sleep apnea, narcolepsy, or shift work sleep disorder. Modafinil may also be used for purposes not listed in this medication guide.