But some children don’t respond well to these drugs or have bothersome side effects. Guanfacine and clonidine were first developed to treat high blood pressure. By affecting nerve impulses ...

February 28, 2011 — The US Food and Drug Administration (FDA) has approved guanfacine extended-release tablets (Intuniv, Shire Plc) as adjunctive therapy to stimulants such as methylphenidate in ...