California Poppy
Also known as: Eschscholzia californica, Golden poppy
Overview
Mild sedative and anxiolytic herb in the poppy family. Distinct from opium poppy — no opioid alkaloids.
Frequently Asked About California Poppy
How much California Poppy should I take?
When is the best time to take California Poppy?
Should I take California Poppy with food?
Does California Poppy interact with medications?
What does California Poppy pair well with?
Who should not take California Poppy?
What are the side effects of California Poppy?
Dosage
Safe for short-term ongoing use; long-term safety not well studied
Avoid in pregnancy
Research & Studies
We haven’t curated landmark studies for California Poppyyet — one-click into the primary literature here. PubMed (RCTs) is usually the highest-signal starting point.
Mechanism of Action
- • Contains californidine and eschscholtzine alkaloids
- • GABAergic activity in animal models
- • Inhibits enzymatic degradation of catecholamines and serotonin
Evidence Quality
Limited human studies. Traditional use for sleep and mild anxiety; mechanism inferred from in vitro work.
Safety & Contraindications
- • Despite the name, contains no opioid alkaloids
- • Pregnancy
- • Combination with strong CNS depressants
- • Drowsiness
- • Mild GI upset (rare)
Avoid — uterine-stimulating activity reported
No significant concerns at typical doses
Interactions
- • CNS depressants — additive sedation
- • MAOIs (theoretical, given alkaloid content)
- • Other sedatives (valerian, hops, kava)
- • Avoid with alcohol
Stacking & Synergies
Buying Guide
- • Whole-plant aerial parts
- • Standardized extract preferred
- • Often used in sleep blends rather than alone
- • Effect is subtle compared to valerian or kava
- • Not the same plant as opium poppy (Papaver somniferum)
More in Sleep
Other ingredients in the Sleep category.
Cite this page
Formulate Research Team. (2026, June). California Poppy — Evidence-Based Supplement Guide. Formulate Supplement Encyclopedia. https://app.formulate-health.app/learning/supplements/california-poppy
Educational content based on published research and our scoring methodology. Not medical advice — consult a qualified healthcare provider before starting, stopping, or changing supplements, especially if you take medications, are pregnant, or have a medical condition.