Capsule Depot – all vegetarian capsules are made of HPMC and water, no preservatives, additives or excipients. Capsule Depot provides easily accessible materials testing reports and allergy declarations on their website. Solaray – all vegetarian capsules are made of HPMC and water, no preservatives, additives or excipients. Capsule Connection – all vegetarian capsules are made of HPMC and water, no preservatives, additives, excipients, wheat or starch, and are non-GMO. HealthCaps-USA – all HPMC vegetarian capsules are made of hypromellose and water, no preservatives, additives or excipients, and are non-GMO. (NOTE: their organic vegetarian capsules are made of pullulan, water and carageenan) NOW Foods – all vegetarian capsules are made of HPMC and water, manufactured by Capsugel.