Colloidal Silicon Dioxide marketed by PAR DRUGS AND CHEMICALS LIMITED is an excipient, which is also a pharmacologically inactive substance. It is formulated from silicon dioxide that is found in quartz or sand and silicates that are found in plants, animals, and water. Therefore, it is safe to consume by humans. Our Colloidal Silicon Dioxide is primarily used as a glidant, disintegrant, absorbent, and anti-caking agent, allowing powder to flow independently when the medicines are processed. Numerous over the counter medicines such as Acyclovir, Furosemide, Hydrochlorothiazide, Indomethacin, Meprobamates, etc., are made with this silicon dioxide compound.