GABA Modulation
Valerian root (Valeriana officinalis) contains valerenic acid, which inhibits the enzyme GABA transaminase — the enzyme responsible for breaking down GABA. This increases available GABA in the synapse, producing anxiolytic and sedative effects via GABA-A receptors, similar to how benzodiazepines work but far more mildly and without dependency.
The Paradox of Quality
Valerian's active compounds (valerenic acid, isovaleric acid) are volatile and degrade rapidly. Many commercial products have essentially no valerenic acid left by the time they reach the consumer. Choose standardised root extracts with guaranteed valerenic acid content, or use freshly dried root.
The Passionflower Stack
Valerian inhibits GABA breakdown. Passionflower (Passiflora incarnata) also inhibits GABA breakdown via a different enzyme (MAO). Together they stack for a more complete GABAergic effect — this combination has clinical trial support and is one of the most effective natural sleep stacks available.
Practical Use
Take 300–600mg of standardised extract 30–60 minutes before bed. Effects may take 2–4 weeks of consistent use to fully manifest — unlike drugs, valerian is a tonic that gently retrains sleep architecture. It does not cause next-day grogginess at normal doses. Morning use can cause sedation.