Products Crospovidone (polyvinylpolypyrrolidone) is found in many drugs as an excipient, especially in tablets. Not to be confused with copovidone. Structure and properties Crospovidone is a cross-linked homopolymer of 1-ethenylpyrrolidin-2-one. It exists as a white to yellowish-white hygroscopic powder or as a leaflet and is practically insoluble in water. This is in contrast to the … Crospovidone
Definition and properties Tablets are solid dosage forms containing one or more active pharmaceutical ingredients (exception: placebos). They are intended to be taken by mouth. Tablets may be swallowed unchewed or chewed, dissolved in water or allowed to disintegrate before use, or retained in the oral cavity, depending on the galenic form. The Latin term … Tablets
Products Numerous medicines are commercially available as film-coated tablets. Today, they are produced much more frequently than the classic coated tablets, which are characterized by a thicker layer with sugar. If tablets are newly registered, they are usually film-coated tablets. Structure and properties Film-coated tablets are tablets that are coated with a thin layer of … Film Tablets
Products Polyvinyl alcohol is used as an excipient in many drugs, especially in film-coated tablets. Structure and properties Polyvinyl alcohol exists as a yellowish white and odorless powder or as translucent granules and is soluble in water. Different types are distinguished. The substance is obtained by polymerization of vinyl acetate followed by partial or almost … Polyvinyl Alcohol
Products Copovidone is found as an excipient in drugs, mainly in tablets. Not to be confused with crospovidone. Structure and properties Copovidone is a copolymer of 1-ethenylpyrrolidone-2-one and ethenyl acetate in the ratio 3:2 (m/m). It exists as a white to yellowish white hygroscopic powder or as a leaflet and is readily soluble in water. … Copovidone
Products Tear substitutes are available as eye drops or eye gels in the form of single doses (monodoses, SDU, UD) and in vials. The monodoses do not contain preservatives and are usually suitable for contact lens wearers. The vials may contain a preservative and have a limited shelf life after opening. However, there are those … Tear Substitute
Definition On the one hand, drugs contain the active ingredients that mediate the pharmacological effects. On the other hand, they consist of excipients, which are used for the production or to support and regulate the drug effect. Placebos, which consist only of excipients and contain no active ingredients, are an exception. Excipients can be of … Auxiliary Materials
Background The tear film is the outermost connection between the surface of the eye and the environment and is involved in the visual process. It moisturizes, protects and nourishes the eye. It is an aqueous gel containing water, mucins, salts, antibacterial proteins and antibodies, vitamin A, and lipids, among other substances, and is distributed over … Dry Eyes: Causes and Remedies
Products Pure povidone is available to order in pharmacies. Povidone is found in many drugs as an excipient, especially in tablets. It is a component of the disinfectant povidone-iodine, which is available as a solution and ointment, among other products. Povidone is also found in artificial tears and, as such, is approved as a drug … Povidone
Products Povidone–iodine is commercially available as ointment, solution, gargle, ointment gauze, vaginal suppositories, and soap (Betadine, generic), among other products. It was developed in the 1950s and has been approved in many countries since 1969. Structure and properties Povidone–iodine is a complex of povidone and iodine. It has a content of 9.0 to 12.0% available … Povidone-Iodine
Products Povidone K 25 is commercially available in the form of eye drops in dropper bottles and as monodoses (Oculac, Protagent). It has been approved in many countries since 1990. Structure and properties Povidone consists of linear polymers of 1-ethenylpyrollidin-2-one. The different types of povidone are characterized by the viscosity of their solutions, expressed by … Povidone K 25
Definition Eye drops are sterile, aqueous or oily solutions or suspensions of one or more active ingredients for dropwise application to the eye. They may contain excipients. Aqueous preparations in multi-dose containers must contain a suitable preservative if the preparation is not itself sufficiently antimicrobial. Eye drops without preservatives must be marketed in single-dose containers. … Eye Drops for Dry, Red, Pink or Itchy Eyes
