Vitacost Vegetarian Capsules Empty size “00” may be filled with the herbs supplements extracts or nutrients of your choice. How does Vitacost Vegetarian Capsules Empty size “00” work? . Vitacost Vegetarian Capsules come bottled for your convenience. These empty vegetarian capsules may be filled as needed or pre-filled (unless filling with if liquid) and stored in the bottle. Each 2-piece capsule is easy to pull apart fill and put back together. . These size “00” vegetarian capsules can be used to make your own combinations of vitamins minerals and powdered nutrients. Some popular herbs and spices taste bitter or unpalatable like cayenne pepper. But with these empty vegetarian capsules you can ingest healthy herbs and nutrients without tasting them and control the potency of the dosage.