was curious to this.. SWIM knows amphetamines
constrict blood vessels as well as in increase BP. SWIM knows of an amino acid
L-arginine. basically it's a prescurser to nitric oxide, and helps open up the blood vessels, thereby getting more oxygen to the heart and brain.. plus, possibly lower BP..
SWIM has taken this with adderall
, and hasn't noticed any heart pounding or head throbing. argnine is all natural too.. it's actually found in some foods.