There are 60 pills in the Desert Burn bottle. FAQ from their website said 2 pills in the morning, and 1 or 2 before lunch and dinner.
FAQ from hoodia-dietpills.com says 1-2 caps before each meal.
It looks like for both brands you'd end up using anywhere from 3-6 caps a day.
Desert Burn has 60 caps x 750mg = 45000mg
hoodia-dietpills.com has 90 caps x 400mg = 36000mgs.
I guess if they're the same price...desert burn is cheaper per mg.
If hoodia-dietpills.com says 1 400mg cap before each meal, i'm sure you could get away with using only 1 desert burn cap (as it has almost twice as much hoodia). When I took it, I would take 2 caps in the morning and it would blunt my hunger until 6-7 at night.