science

Neomycin/polymyxin B/hydrocortisone

Neomycin/polymyxin B/hydrocortisone is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Neomycin/polymyxin B/hydrocortisone rather than just read about it. In short: Neomycin/polymyxin B/hydrocortisone, sold under the brand Otosporin among others, is a medication used to treat otitis externa (swimmer's ear) and certain eye disorders. It consists of the antibiotics neomycin and polymyxin B, and the steroid hydrocortisone.

Key takeaways

Neomycin/polymyxin B/hydrocortisone belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Neomycin/polymyxin B/hydrocortisone to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Neomycin/polymyxin B/hydrocortisone from memory before moving on to harder problems.

Reference excerpt

Neomycin/polymyxin B/hydrocortisone, sold under the brand Otosporin among others, is a medication used to treat otitis externa (swimmer's ear) and certain eye disorders. It consists of the antibiotics neomycin and polymyxin B, and the steroid hydrocortisone. It is used as an ear drop or eye drop. The most common side effects include itchiness and a skin rash. Other side effects may include dizziness, hives, anaphylaxis, hearing loss, and headache. Safety in pregnancy and breastfeeding is unclear. The antibiotics work by killing specific types of bacteria while the steroids work by decreasing inflammation. The combination was approved for medical use in the United States in 1964. In 2022, it was the 296th most commonly prescribed medication in the United States, with more than 400,000 prescriptions.

History Cortisporin was developed by Glaxo Wellcome and was approved by the US Food and Drug Administration in 1975. In 1997, the rights were sold to Monarch Pharmaceuticals, a division of King Pharmaceuticals. In 2007, King sold it to JHP Pharmaceuticals. Par Pharmaceutical acquired JHP in 2014. In 2015, Endo International purchased Par.

Society and culture

Economics In 2015, the price was $100, and in 2016, it reportedly was selling for $195. A generic version is priced at $144. The drug is owned by Dublin, Ireland-based Endo International.

References

Illustrations

Worked examples

Example 1 — a first encounter with Neomycin/polymyxin B/hydrocortisone

Start with the simplest possible case. Write down what Neomycin/polymyxin B/hydrocortisone claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Neomycin/polymyxin B/hydrocortisone before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Neomycin/polymyxin B/hydrocortisone ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Neomycin/polymyxin B/hydrocortisone

In research: Neomycin/polymyxin B/hydrocortisone appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Neomycin/polymyxin B/hydrocortisone in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Neomycin/polymyxin B/hydrocortisone is common in secondary-school and first-year university syllabi. It links to neighbouring topics Combination drugs, Drugs developed by Pfizer, Drugs not assigned an ATC code, so understanding it makes those chapters shorter.
In everyday life: Look for Neomycin/polymyxin B/hydrocortisone outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Neomycin/polymyxin B/hydrocortisone in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Neomycin/polymyxin B/hydrocortisone means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Neomycin/polymyxin B/hydrocortisone out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Neomycin/polymyxin B/hydrocortisone in simple terms?

Why does Neomycin/polymyxin B/hydrocortisone matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Neomycin/polymyxin B/hydrocortisone?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Neomycin/polymyxin B/hydrocortisone.