A bright yellow summer flower named after St. John, gathered around Midsummer and steeped in oil until it turns blood-red. Europe has used it for low spirits, nerves and skin for centuries, and today it’s one of the most-studied herbs for mood. It also has more drug interactions than almost any other herb, so this page starts its Safety section there.
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Berberine
Berberine is the bright-yellow compound behind some of the oldest bitter remedies in Ayurveda and Chinese medicine, from Indian barberry to Chinese goldthread. Today it is one of the most-studied plant compounds for metabolic health, and one of the most interaction-prone, so it is worth reading the safety section first.
Apple Cider Vinegar
People have used vinegar as a kitchen remedy for thousands of years, from Hippocrates' wound care to the honey-and-vinegar tonics of Persian medicine. Here's what tradition says, what the small modern studies found, and how to take it without hurting your throat.
Peppermint
Peppermint has settled stomachs and freshened breath since ancient Egypt, and today it's one of the few herbs with solid research behind it, especially for an irritable gut. Here's how tradition uses the leaf and the oil, what the studies show, and who should skip it.
Licorice Root
One of the oldest and most widely used herbs on earth, licorice root is the sweet "harmonizer" of Chinese formulas and a soothing tonic in Ayurveda. Here's what traditions use it for, what the research shows, and why it's one herb you need to respect.
Holy Basil (Tulsi)
Sacred in Hindu tradition and called the "elixir of life" in Ayurveda, tulsi has been a daily tonic in India for thousands of years. Here's what tradition uses it for, what the modern studies show, and who should be careful with it.
Red Clover
A pink meadow flower that herbalists have long counted among the classic "blood purifier" herbs, often sipped as a gentle tea. Members can see how people use it, what the research does and doesn't show, and why it isn't for everyone.
