Psyllium, known in India as isabgol, is the plant fibre behind many everyday fibre supplements, and it has some of the strongest research of any herb in the vault. Here’s how traditions use it, what the newest guidelines say, and how to take it safely.
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Bitter Candytuft
A small, bitter garden flower from the cabbage family. It's the lead herb in Germany's best-known stomach drops, a multi-herb formula that has been studied for bloating, fullness and IBS-type discomfort.
Vitamin D3 + K2
A hundred years ago, doctors found that cod liver oil and sunshine could straighten the bowed legs of children with rickets. Twenty years later a dentist found a mysterious "Activator X" in spring butter. Here's why people now take vitamin D3 and K2 together, what the studies actually show, and the one medicine that makes K2 a serious matter.
Vitex (Chaste Tree Berry)
Vitex is the peppery little berry of the chaste tree, used by women for over two thousand years and best known today for the days before a period. In Europe one vitex extract is an approved herbal medicine for premenstrual syndrome.
Cordyceps
A rare Himalayan fungus that grows out of moth caterpillars, cordyceps has been prized in Tibetan and Chinese medicine since at least the 1400s as an energy and lung–kidney tonic. Today almost all of it is grown in labs, and the research is far thinner than the marketing.
Sarsaparilla
Sarsaparilla root was one of the most famous "blood purifiers" of European and American medicine for about three centuries, and it still turns up in blood-cleanse, skin and men's tonic blends. Members get the full entry: its history, why doctors doubted it as early as the 1850s, what the research does and doesn't show, and its digoxin, lithium and kidney cautions.
Spirulina
Spirulina is a deep blue-green algae powder that's been eaten as food for centuries, and many detoxers add it to smoothies during heavy-metal and liver routines. Members get the full entry: what the small studies found, typical amounts, and why where your spirulina comes from matters more than almost anything else.
