Can You Take Caffeine and California Poppy Together?

Dose or timing may matter

The short answer

Caffeine's stimulation may counteract California poppy's sedative alkaloids.

How to arrange timing

Separate intake by at least 3-4 hours.

Reference

Reference noted for this combination: Rolland et al., 2001, Fundam Clin Pharmacol

Important context

Whether supplements suit you together also depends on dose, product formulation, health conditions, and medication use. Ask a doctor or pharmacist first if you take medication, are pregnant or breastfeeding, or have a chronic condition.