Can You Take Lavender Oil (Oral) and Passionflower Together?

Use extra care with this pair

The short answer

Passionflower increases serotonin levels, and Lavender Oil (Oral) (linalool) has been shown to affect serotonergic neurotransmission. Together, they may amplify serotonergic effects beyond safe levels.

How to arrange timing

Monitor for signs of excess serotonin (agitation, tremor, sweating) when combining Passionflower and Lavender Oil (Oral). Consider reducing doses or using them at different times.

Reference

Reference noted for this combination: Franconi G, et al. Serotonin syndrome caused by drug-drug interactions with supplements. J Clin Pharm Ther. 2014;39(4):339-342.

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.