Topic: Pharmaceutical Calculation
Chapter: Colligative properties of solution and isotonicity
The sodium chloride equivalent method (aka NaCl e-value method) is the most popular method of rendering an ophthalmic preparation isotonic. This video discusses the following:
a) The concept of e-value of a drug.
b) The general structure of questions that appear in NAPLEX and Pharmaceutics quizzes.
c) Steps you need to follow to solve these problems.
d) Making a preparation isotonic with the help of non-sodium chloride tonicity-adjusting agents, such as boric acid.
This is an education video only. Anyone can distribute and use for educational purpose. No rights reserved by me.
I like to thank Bensound (www.bensound.com) for their kind permission to use this royalty free background music.
Note: the term "tonic" is used as a part of isotonic, hypertonic, hypotonic adjectives. However, 'tonicic' too is used as adjective when we mean strength or equivalent amount of something. This is not a typo in this video. Pages 175, 179, 182 of Ansel's Pharmaceutical Calculation (14th ed) have this term mentioned.
Thanks for watching.
Mamoon Rashid, PhD
Appalachian College of Pharmacy
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