Epinephrine is a vasoconstrictor
Indeed.
yes
vasoconstrictor
Serotonin
Serotonin
Yes it can.
Phenylephrine is a powerful vasoconstrictor. It is used as a nasal decongestant and cardiotonic agent. Phenylephrine is a postsynaptic α1-receptor agonist with little effect on β-receptors of the heart.
nope. Its a vasoconstrictor which is why it works specifically for migraines
No. Marijuana is one of the few drugs that isnt. Type in "vasoconstrictor" into wikipedia to look up the ones that are. Marijuana actually does the opposite and increase blood flow and expand the arteries.
Vasoconstrictor fibers
reduces risk of toxic reaction, and helps control bleeding