Eno (drug)

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Headquarters India
Brands GSK
Website https://www.eno.co.in

Eno is one of the best known GlaxoSmithKline's[1] (GSK) products. It is the fast-acting effervescent fruit salt, which is used as an antacid and reliever of bloating. Eno was invented in the 1850s by James Crossley Eno (1827-1915). It has sales of nearly £30 million in the major markets are Spain, India, Brazil, South Africa, Malaysia and Thailand. Apart from providing quick relief to stomach, it is frequently used as a substitute for baking powder[2].


In the summer, 2010, GSK made the decision to withdraw Eno from the UK market. At the beginning of the year, they withdrew the unique UK 218g jar, replacing it with a European/USA 150g jar, increasing its price by 18%. It can still be found in sachets of 5g, sold in boxes of ten, however stocks are not being replaced. Most existing UK stock has an expiry date of May 2013. It was also known in its earliest incarnations for the prevention of intense diarrhea.[3]

This leaves a major gap in the UK market as its primary competitor, Andrews, also a registered trade mark of GlaxoSmithKline, contains 2.1g of sucrose per 5ml measure, making it unsuitable for diabetics. They are, however readily available at Indian grocery stores in the US and UK. Other effervescent alternatives, such as Resolve, contain paracetamol - unnecessary if you have a simple stomach upset. Even alternatives type 'fruit salts' from Boots and Superdrug contain sucrose, the result being a sweet sugary taste in contrast to the historically advertised Eno "refreshing zing". They are not suitable for diabetics.


Each 5 gm of Eno sachet contains sodium bicarbonate[4] 2.32 gm, citric acid[5] 2.18 gm, anhydrous sodium carbonate[6] 0.50 gm, and sodium[7] 0.85 gm.

Flavors of Eno[edit]

Eno provides quick relief in stomach acidity and is available in six flavors: Eno fruit salt mausambi flavor, orange flavor, ajwain[8] flavor, lemon[9] flavor, cola flavor and fruit salt regular.

Uses of Eno[edit]

Eno is used for common health problems such as indigestion, gas, flatulence, stomach acidity, bloating, and heartburn. The sparkling antacid drink provides quick relief in just 6 seconds for acidity. In addition to being used as a medication, Eno can be used for baking recipes.


Eno should be taken by those people affected by indigestion and it is recommended to be taken 10 minutes after having a meal in the day or in the night.


Before taking Eno, it is advisable to consult a doctor. It can be harmful to pregnant and lactating women. Taking Eno can sometimes cause stomach gas and gut irritation and it only provides short-term relief from indigestion. Patients on salt restricted diets should not take Eno, while normal persons are advised not to take it for more than 14 days. Furthermore, Eno should not be used in combination with other drugs.

See also[edit]


  1. ^ "Home | GSK". www.gsk.com. Retrieved 2016-08-30. 
  2. ^ "Baking powder". Retrieved 2016-08-30. 
  3. ^ The Sunday Magazine. Strahan & Company. 1892-01-01. 
  4. ^ "Sodium bicarbonate: Indications, Side Effects, Warnings - Drugs.com". www.drugs.com. Retrieved 2016-08-30. 
  5. ^ Pubchem. "citric acid | CH2COOH-C(OH)COOH-CH2COOH - PubChem". pubchem.ncbi.nlm.nih.gov. Retrieved 2016-08-30. 
  6. ^ "Information on anhydrous sodium carbonate, soda ash: Etacude.com". chemicals.etacude.com. Retrieved 2016-08-30. 
  7. ^ "Sodium: How to tame your salt habit - Mayo Clinic". www.mayoclinic.org. Retrieved 2016-08-30. 
  8. ^ "Ajwain seeds nutrition facts, medicinal properties and health benefits". Retrieved 2016-08-30. 
  9. ^ "Lemon/Limes". www.whfoods.com. Retrieved 2016-08-30.