It seems like Total Whole Grain cereal doesn’t have a slogan. Here are some suggestions, available for General Mills to license for a modest sum:
If it tastes this bad, it has to be good for you. [Link]
Where exactly did you think all that recycled cardboard was going?
You can really taste the fiber.
If you think it tastes bad at first, give it a minute – it gets worse!
100% of your recommended daily intake of awful.