HI PETE,I JUST USE 2 DOSES FOR THAT IS EQUAL TO MOST THE PILLS OUT THERE.I ORDERED A LARGE ORDER AND SHIPPING WAS FREE.I THINK IT WAS LIKE 250 OR SO AND THEY NEVER CHARGED SHIPPING BUT YOU KNOW SOME IOP HERE CHARGE AS MUCH AS $35 TO SHIP AND WHEN YOU TOTAL THESE LOW PRICES HERE WITH THE REGULAR SHIPPING YOU REALLY GET A GREAT DEAL.I MADE ANOTHER ORDER AND WAS NOTIFIED IT HAS BEEN SHIPPED.