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.
The two main side effects of these medicines are, not surprisingly, excessive tiredness or sleeping and dizziness from low blood pressure. Tenex has less sedative effect than Clonidine, so is less likely to cause tiredness, but is also less useful as a sleep aid.