Many devices are based on hydrostatics such as barometers and manometers, i.e., determine pressure through measurement of a column (or columns) of a liquid using the pressure variation with elevation equation for an incompressible fluid.
Tenex is the brand-name version of a generic drug called guanfacine. This drug is typically prescribed to treat high blood pressure. Itâs not approved by the Food and Drug Administration (FDA) to treat ADHD. However, your childâs doctor may still prescribe Tenex to treat ADHD.
Blood Pressure Drugs Used to Treat ADHD. Some drugs normally taken for high blood pressure, like clonidine (Kavpay) and guanfacine hcl (Tenex), may help control symptoms of the disorder. They also can help lower some of the side effects of stimulant meds, especially sleeplessness and aggressive behavior. They can be used alone or along with stimulants.