What I love about Sub-lingual B Vitamins is that I can skip breakfast, and still get my B's without stomach upset. Don't get me wrong, I am not recommending that you skip breakfast, but on those mornings when you are running late, and you are skipping breakfast, you don't have to skip your B vitamins as well. It's also good after you have had a complete breakfast. It's just not required before you can take this.These vitamins are so effective that I feel like I am on a V-8 commercial. You know the old ones where the person's head is leaning to the side until they have their V-8? The V-8 sort of balances them. That's what these vitamins do for me. I am just a bit cloudy until I get my B Vitamins, and the sub-lingual form, makes for faster absorption, and more immediate effectiveness. Now, what's unique about Spring Valley B-Complex Sub-lingual vitamins, compared to comparable brands of the same, is that it's also very cheap.