Drugs that increase the activity of the nervous system, causing wakefulness.Found on http://www.translationdirectory.com/glossaries/glossary046.htm
herbs that spur the circulation, increase energy and physical functionFound on http://www.encyclo.co.uk/local/20575
Stimulants are substances that can change your mood, or produce a sense of alertness and energy. For example, caffeine.
Found on http://www.nhs.uk/Conditions/Pages/hub.xhtml
stimulants Medications which increase heart rate, breathing rate, and brain function. Some stimulants affect only a specific organ; such as, the heart, lungs, brain, or nervous system.Found on http://www.wordinfo.info/words/index/info/view_unit/3904/
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