Pelargonium Graveolens (Geranium) for Anti-Inflammatory

Research suggests that Pelargonium graveolens (geranium) essential oil and its extracts possess anti-inflammatory properties, with the available evidence coming primarily from laboratory and animal studies rather than human clinical trials. Studies indicate that geranium oil and its major constituents can suppress key inflammatory signaling pathways, including NF-κB activation and the expression of pro-inflammatory cytokines such as IL-6, IL-1β, and TNF-α, and one mouse model study found that geranium oil reduced neuroinflammation associated with Parkinson's disease-like conditions. The one randomized controlled trial included in this body of evidence focused on a multi-herb combination product rather than geranium alone, and the single clinical trial specifically examining geranium demonstrated antifungal and apparent anti-inflammatory effects in a localized oral condition, though it did not measure inflammatory biomarkers directly. Overall, while the preclinical findings are consistently supportive, the near-total reliance on cell culture and animal models is a significant limitation, and well-designed human trials isolating geranium's anti-inflammatory effects are lacking, making it premature to draw firm conclusions about its efficacy in people.