There are a vast majority of manufactures out there. I prefer the Vitamin Shoppe Brand. Among others are Solaray, Naturemade, and Natrol. They are more consistent, and do not contain additives, and usually in a natural base. Such as rice, or soy. The best types for adults are capsule and liquid, as we tend to not utilize hard pressed pills. For children, and adults the gummies are the best, Sundown makes a good one, as does Vitafusion. As we chew the vitamin, the nutrients are then absorbed, and distributed to the blood stream. The same as subliminal tabs, (under the tongue) only a lot cheaper.