Last updated September 24, 2026 Gotu Kola Benefits, Uses, Tea, Dosage, and Safety Gotu kola is a leafy herb traditionally used for memory, mental clarity, and skin-related concerns. Known botanically as Centella asiatica, it appears in herbal teas, supplements, and skin-care products. Human research offers some promising findings, but Memorial Sloan Kettering's overview emphasizes that evidence remains insufficient to establish it… Read more

Last updated September 24, 2026 Passionflower Benefits, Uses, Tea, Dosage, and Safety Passionflower is an herb traditionally used to help people unwind and sleep. Usually identified as Passiflora incarnata, it is sold as dried herb, tea, and extracts. Its calming reputation has a long history, but the European Medicines Agency's assessment distinguishes traditional use from benefits established through strong clinical evidence.… Read more

Last updated September 24, 2026 What Is Kava? Effects, Uses, Dosage, and Safety Kava is a Pacific Island plant whose roots are used to prepare an earthy beverage associated with relaxation, social gatherings, and ceremony. Known botanically as Piper methysticum, it also appears in supplements studied for anxiety. Its long history is part of the appeal, but NCCIH's overview describes mixed evidence and important safety concerns, in… Read more

Last updated September 17, 2026 What Is Kanna? Effects, Uses, and What the Research Says Kanna is a South African succulent commonly known as Sceletium tortuosum. It has a history of use among San and Khoikhoi peoples and contains alkaloids studied for their effects on mood and stress responses. The background to a human brain-imaging study describes that botanical and traditional context. Today, kanna supplements are marketed… Read more

Last updated September 12, 2026 Smoking Herbs With Weed: Reported Effects, Evidence, and Risks Smoking herbs with weed can change a joint’s aroma and flavor, but research does not provide a reliable way to choose an herb that makes the high calmer, clearer, or more euphoric. Lavender, rose petals, chamomile, mullein, damiana, and peppermint appear in herbal smoking blends, yet the evidence discussed below largely concerns other p… Read more