Clonidine.
D000959:Antihypertensive Agents / Q000009:adverse effects; D006801:Humans; D007022:Hypotension / Q000139:chemically induced; D008750:Methyldopa / Q000009:adverse effects; D005082:Physical Exertion; D011187:Posture
D000959:Antihypertensive Agents; D008750:Methyldopa