Frequently Asked Questions Q1. What are effervescent tablets?
Answer: Effervescent tablet is a tablet intended to be dissolved or dispersed in water before administration. Effervescence is the escape of gas from an aqueous solution and the foaming or fizzing that results from a release of the gas. They are uncoated tablets that generally contain acid substances and carbonates or bicarbonates and which react rapidly in the presence of water by releasing carbon dioxide. Effervescent tablets have major advantage that the drug product is already in solution at the time it is consumed. Thus, the absorption is faster and more complete than with conventional tablet. This is particularly helpful in treating acute symptoms of pain and gastrointestinal disorder. Effervescent drugs are delivered to the stomach at a pH that is just right for absorption. Moreover, it can be administered to patients who cannot swallow and have less intestinal tolerance. Such tablets are palatable, highly stable, easily transportable and can help in incorporation of large doses for faster therapeutic action. Examples of such medications are fast acting painkillers, cold-relief medicines, multi-vitamins, dental drugs, nausea drugs and antacids.
ENO is the most globally consumed gastrointestinal product. The fast-acting effervescent fruit salts, used as an antacid and reliever of bloated-ness, was invented in the 1850s by James Crossley Eno. Eno (Tagline -"Gets to work in 6 seconds" ) is actually a formula of Sodium bicarbonate, Citric acid and Anhydrous sodium carbonate. In India, Eno is marketed as Ayurvedic proprietary medicine and comes in many types of refreshing flavours.
Q2. What are emulsions?
Answer: An emulsion is a mixture of two or more liquids that are normally immiscible (unmixable or unblendable). Emulsions are part of a more general class of two-phase systems of matter called colloids. Emulsions should be used when both phases, dispersed and continuous, are liquids. In an emulsion, one liquid (the dispersed phase) is dispersed in the other (the continuous phase). Two liquids can form different types of emulsions. As an example, oil and water can form, first, an oil-in-water emulsion, wherein the oil is the dispersed phase, and water is the dispersion medium. Second, they can form a water-in-oil emulsion, wherein water is the dispersed phase and oil is the external phase. Read More>>>