🧠Neurotransmission
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← Neurotransmitters

Adenosine

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C10H13N5O4
⤢ 3D

Adenosine is a neuromodulator that accumulates during waking hours and promotes sleep, serving as the brain’s marker of metabolic "tiredness." By dampening arousal-promoting neurons it builds sleep pressure across the day — the effect caffeine blocks to produce alertness. It also regulates cerebral blood flow and helps protect neurons during metabolic stress.

Too little may be associated with

Difficulty sleeping

Too much may be associated with

Excessive drowsiness

Informational only — not medical advice.

Stimuli that influence it

Functions

Books (3)

Research (19)

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