Single 0 size capsules hold between 500 mg to 700 mg of powder.
Length is 21.6 mm.
Ingredients: Made from plants, not gelatin. Hydroxypropylmethylcellulose (polymers derived from plant fibers), Water, Sorbitol USP, Colloidal Silicon Dioxide USP
To fill, either purchase an inexpensive capsule machine or put your herb blend into a bowl and push the inside portion of a capsule into the herbs to pack the capsule. Once filled, push the two halves back together until they click.