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theophylline

theophylline Theophylline is a naturally occurring xanthine-derived alkaloid found in tea and coffee plants.

Theophylline is a naturally occurring xanthine-derived alkaloid found in tea and coffee plants. It acts on several body systems, including blocking adenosine and affecting phosphodiesterase activity, and is known for relaxing bronchial smooth muscle while also stimulating the central nervous system and heart.

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Drafting source: NCI Thesaurus. Flat export snapshot 2026-10-18. “Theophylline” (C872).
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PsychTerms (psychterms.org), CC BY 4.0, version 1. “theophylline.” Development preview.

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theophylline

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