Pokeweed has a long history as a folk remedy, a foraged green, and even a source of ink and dye. In traditional medicine, it was used as a purgative, a salve for swollen tissue, and a bronchodilator for respiratory problems. Modern lab research has identified proteins in the plant with genuine antiviral and immune-stimulating properties. But pokeweed is also seriously toxic when handled or prepared incorrectly, so understanding both its uses and its risks matters.
Traditional Medicinal Uses
Pokeweed was a staple of folk medicine across the eastern United States long before anyone studied it in a lab. Herbalists used the root and leaves to treat swollen lymph nodes, tonsillitis, and respiratory congestion. The plant acts as an expectorant and antitussive, meaning it helps loosen mucus and suppress coughing. It was also applied externally as a poultice to reduce swelling and edema in superficial tissue.
Other traditional uses included treating rheumatoid arthritis, skin conditions, and infections. It was sometimes taken as a strong purgative or emetic to induce vomiting, which was a common (if unpleasant) medical strategy in earlier centuries. The Hoxsey herbal tonic, a controversial alternative cancer treatment from the mid-1900s, included pokeweed as one of its ingredients. None of these traditional applications have been validated in human clinical trials, but the biological activity behind some of them is real, as lab research has since confirmed.
Antiviral Protein Research
The most scientifically interesting compound in pokeweed is Pokeweed Antiviral Protein, or PAP. This protein belongs to a class of molecules called ribosome-inactivating proteins. In simple terms, PAP can disable the cellular machinery that viruses hijack to copy themselves. It does this by chemically snipping a critical piece of the ribosome (the cell’s protein-building factory), which stops viral replication in its tracks.
PAP also appears to attack viral genetic material directly. It targets a protective cap structure on viral RNA, chemically damaging it so the virus’s instructions can no longer be read and translated into new virus particles. This mechanism works on both capped and uncapped viruses, giving PAP a broad spectrum of activity. In laboratory studies, PAP has shown effectiveness against HIV-1, herpes simplex virus, influenza, poliovirus, and several plant viruses.
This research is entirely lab-based. No one has turned PAP into a pill or injection approved for human use. The protein is toxic to human cells too, not just viral ones, which makes translating these findings into a safe treatment extremely challenging. Still, the breadth of antiviral activity makes PAP a subject of ongoing scientific interest.
Immune System Stimulation
Pokeweed contains a substance called pokeweed mitogen, or PWM, that powerfully stimulates immune cells. In laboratory settings, PWM is actually used as a standard research tool to activate both T cells and B cells, the two major branches of the adaptive immune system. When researchers want to test how well someone’s immune cells function, they often expose those cells to PWM and measure the response.
Specifically, PWM drives T cells to produce a signaling molecule called interleukin-2, which in turn helps B cells produce antibodies. This cascade is so reliable in the lab that it has become a benchmark for studying immune function in both healthy people and those with immune-related diseases. The traditional use of pokeweed for infections and swollen glands lines up with this immune-stimulating activity, though eating the plant is far too dangerous and imprecise to serve as any kind of immune therapy.
Poke Sallet: The Edible Tradition
Despite its toxicity, pokeweed has been eaten as a cooked green across the American South for generations. The dish, called poke sallet (sometimes spelled “salat” or “salad”), uses only the young spring leaves, harvested before the plant matures and its toxin levels climb. The preparation method is non-negotiable: the leaves must be boiled twice in large volumes of fresh water, with the cooking water discarded and the leaves rinsed between each boil.
A typical preparation calls for boiling the leaves in about six quarts of water for 20 minutes, skimming the froth off the top, draining and rinsing in cold water, then repeating the entire process with fresh water. After this double boil, the greens are drained and typically sautéed with butter, onions, or bacon fat. The double boiling extracts enough of the toxic compounds to make the greens safe to eat. Skipping this step, or eating the leaves raw, can cause serious illness.
Dye, Ink, and Other Non-Medicinal Uses
Pokeweed berries produce a vivid reddish-purple juice that has been used as a natural dye, ink, and even food coloring. The berry juice turns wool and linen pink and gives paper a purple hue, though the color tends to fade on fabric over time. Dried mature pokeweed leaves yield a yellow dye. At one point, the berry juice was used to deepen the color of cheap wine, though it reportedly gave the wine a bitter, unpleasant taste and the practice was abandoned.
The name “inkberry,” one of pokeweed’s common names, comes directly from this use. Some historical documents, including letters from Civil War soldiers, were reportedly written with pokeweed berry ink.
Toxicity You Need to Know About
All parts of the pokeweed plant are toxic to humans. The roots carry the highest concentration of poison, followed by the leaves and stems. The berries contain smaller amounts but are still dangerous, especially for children. As few as 10 uncooked berries can cause serious symptoms in a child.
The two primary toxins are phytolaccatoxin and phytolaccigenin. Symptoms of pokeweed poisoning include severe nausea and vomiting, bloody diarrhea, stomach pain, headache, muscle spasms, seizures, rapid pulse, difficulty breathing, dangerously low blood pressure, and loss of consciousness. Even handling the plant with bare hands can cause skin irritation or allow toxins to absorb through cuts.
This toxicity is the central tension of pokeweed. The same biological potency that makes its proteins effective against viruses in a lab also makes the plant dangerous to consume or handle carelessly. If you’re foraging poke sallet, stick strictly to young spring leaves and the double-boil method. The roots, mature leaves, stems, and raw berries should never be eaten under any circumstances.