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. Author manuscript; available in PMC: 2015 Jan 8.
Published in final edited form as: Sci Transl Med. 2014 Jan 8;6(218):218ra5. doi: 10.1126/scitranslmed.3006175

Figure 2. Labeling of the ‘study drug’ and optional ‘rescue medications’ envelopes.

Figure 2

The study drug envelope was labeled ‘placebo’ (2 attacks), ‘Maxalt or placebo’ (2 attacks) or ‘Maxalt’ (2 attacks), in order to provide negative, neutral or positive information, respectively. Subjects were instructed to open the envelope and swallow the pill 30 min after onset of headache. They were asked to refrain from taking rescue medications during the first 2.5 h of each attack, including untreated attack (control).