Vegetable capsules consist of only two ingredients: HPMC and purified water.
HPMC or Hydroxypropylmethylcellulose -- is derived from vegetable cellulose. 100% natural, these capsules contain no preservatives, gelatin, wheat, animal by-products or starch, and they are made from pure cellulose of either pine or poplar.
If Possible capsules should be stored in a cool (15 to 26 degrees C.), dry place (Humidity 45% and 60%), although they can tolerate a wider range of temperatures. If are allowed absorb to much moisture any capsules will expand and can be difficult to insert in capsule machines.
Information
Do not fill capsules with any liquid suspension because it will dissolve prior to consumption. Keep out of direct sunlight, hot water and high temperatures. Capsule content depends on the density, concentration and the amount of the powder filled.
Note: You can fill capsules with some oils - walnut, olive, garlic, omega-3, grape-seed and any other oil as long as there is absolutely no water in it.