melatonin....on the shelf at walgreens, synders, walmart. Dont know if i spelled it right but i used this stuff when i helped a guy with a night floor cleaning business while i was unemployed a year and a half ago. take one little tablet and about half hour later if you can keep your eyes open i dont know what will work. does suck if you dont have a FULL 8 hours or more to sleep. cause when i had to get up after like 5-6 hours once and i felt like CRAP. just a thought...
take care and watch out for the lot lizards! i heard a story of one that got out of one truck squated down to a puddle and spashed herself off and then walked over to another truck and got in for another round!