The grapefruit diet is really just a set of standard rules you follow for mealtimes. There are some variations in the rules, but they usually look something like this:

o Drink 8 8oz (64oz total) glasses of water each day.
o When eating a meal, stop when you are full.
o Follow the meal-plan (below) exactly, no substitutions and you have to eat everything listed. No snacking
o Do the diet for 12 days, then take a break for 2 days.

Breakfast:

grapefruit ( or 8oz of grapefruit juice)
2 eggs prepared any way you choose
2 slices of bacon

Lunch:

grapefruit ( or 8oz of grapefruit juice)
salad with the dressing of your choice
all the meat you want

Dinner:

grapefruit ( or 8oz of grapefruit juice)
salad with the dressing of your choice OR a red or green veggie prepared with butter/spices
any meat or fish
1 cup of coffee or tea

Bedtime Snack:

1 cup of skimmed milk or tomato juice


The grapefruit juice is suppose to be a catalyst that helps burn fat. Coffee hinders fat burning, so you're limited to that 1 cup per day. You can basically eat all the meat and fat you want. Exercise is generally encouraged as well.

There are some supplements on the market that leverage the grapefruit diet as part of their gimmick.