Qsilica Colloidal Silica Gel offers a convenient form of mineral silica required for normal growth and functioning of connective tissue, hair, skin, nails and joint cartilage. Silica can also help to support and maintain strong bones and teeth by playing a role in the metabolism of calcium in the body. Qsilica Colloidal Silica Gel is preserved with natural lemongrass oil, resulting in a refreshing lemon taste. Suitable for vegetarians.