The Chemistry of Pepto Bismol

Introduction

The main ingredients of Pepto Bismol are Bismuth and Benzoic acid.

Bismuth:

• atomic number 83
• 208.98 atomic mass
• may occur naturally
  • white/ silver brittle heavy metal.
  • poor conductor of electricity for being a metal
  • low toxicity for being heavy metal also.
• used in pepto bismol

Benzoic acid

• chemical equation
• C7H6O2
• occurs naturally in many plants’
• salt used in food preservatives

Chemistry's Role

It is not know exactly how the pepto bismol reacts inside the stomach. Pepto bismol“Coats” the irritated tissues to calm down the explosive fluids inside the stomach. It also combines to the toxins produced by E.coli preventing forms of travelers diarrhea. Another reaction inside the stomach that take place is called the oligodynamic effect. The oligodynamic effect is when small amount of a heavy metal, in this case bismuth, is used to kill some of the harmful microbes inside the stomach. It reduces the secretion inside the digestive tract calming the stomach. One ingredient Salicylic acid is known to reduce the irritation and inflammation inside the stomach and intestines. It is due to the combination of these reactions that help the symptoms disappear.

Background Research

Pepto was first made in the early 20th century. It was created by a doctor inside of his own home looking for a cure to the widespread disease of cholera. After his medicine became a hit and he could not manufacture enough inside his home he brought his recipe to a pharmacal company in New York. The name was then changed to its currents name in 1919 Pepto Bismol to help appeal to the adult population more. Although the main purpose is no longer needed it now is used for other stomach problems such as indigestion, diarrhea, nausea, and heartburn.

Resources

http://www.pepto-bismol.com/en-us/about/history

this website is directly from the company and tells very general background information of the product

https://en.wikipedia.org/wiki/Bismuth_subsalicylate

this website has tons of information of almost everything about pepto bismol

http://chealth.canoe.com/drug_info_details.asp?brand_name_id=5164

more information on the ingredients and how its pepto bismol works and the ingredients of the original liquid

http://humantouchofchemistry.com/how-antacids-work.htm

this website has information on antacids and how they work with the stomach to combat nausea and other stomach ailments.

http://pubchem.ncbi.nlm.nih.gov/compound/bismuth_subsalicylate#section=Top

this website has tons of information on BISMUTH SUBSALICYLATE including structure and many other chemical properties

http://www.pepto-bismol.com/en-us/faq/black-stool-black-tongue

also directly form the company explaining why it may turn stools and tongue black and why that is harmless

https://www.nlm.nih.gov/medlineplus/druginfo/meds/a607040.html

This website contains information on why this medication is used and contains warning for usage

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