Erectile tissue in the clitoris and penis. Cross section showing the two corpora cavernosa near the top surface of the penis, and the corpus spongiosum surrounding the urethra near the bottom surface.
Adderall (amphetamine and dextroamphetamine) is a stimulant that affects chemicals in the brain that are associated with hyperactivity and impulse control. Adderall is used in attention deficit hyperactivity disorder (ADHD).
One hypothesis is that the central administration of 5-HT can cause bradycardia or tachycardia and hypo- or hypertension mediated by activation of 5-HT1A and 5-HT2 receptors. Another hypothesis suggests that alpha1-adrenegic antagonism with peripheral vasodilatation causes postural hypotension and compensatory tachycardia.