Tetryzoline

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

Tetryzoline (INN), also known as tetrahydrozoline, is a drug used in some over-the-counter eye drops and nasal sprays. Tetryzoline was patented in 1954, and came into medical use in 1959.

Excerpt from the Wikipedia article “Tetryzoline”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Harbinary, Public domain, via Wikimedia Commons.