Lobelia inflata

Lobelia

Botanical Name: Lobelia inflata Botanical Family: Campanulaceae Definition and Etymology: Inflata refers to the inflated seed pods. Numerous of the common names refer to its use as an emetic including: puke weed, vomit weed, vomit wort, gag weed. Common Names: Lobelia, puke weed, vomit weed, vomit wort, gag weed History: Samuel Thomson in early 1800s used it to remove canker or wastes from the body, as a relaxantand a diffusie agent to move the vital force from the bodys core to the surface removing obstacles along the way. In a time when regular physicians were using bloodletting, Samuel and other physicans were prosecuted and accused of murder. HE introduced it the the eclectics who lauded it was one of the most valued vital stimulants. It was applied topically to the chest for bronchopulmonary afflicitions. Was given in low doses as a cardiac stimulant when the pulse was full sluggish oppressed and doughy. Another indication was nausea with a full, pale, broad, flabby, heavily coated tongue at the base, engorged tissue, difficulty breathing, and a bruised, oppressive feeling in the chest. Folklore: Identification: Herbaceous perennials with stems that exude milky latex. The linear elliptic leaves .5-1.5cm wide are basal or alternate on the stem. Inflorescences are usually racemes with bilaterally symmetric flowers on twisted pedicels, resulting in upside down flowers. The calyces and corollas have tubular bases with 5 narrow often outspread loves. The bilabiate corolla is red, blue or white the upper lip has 2 lobes and the lower lip has 3. The connate stamens enclose the style and extend past the corolla. The usually inferior two-chambered ovary develops into a many-seeded two-valved capsule, or a berry enclosed within the persistent calyx. Habitat: Large genus of plants growing mostly in the tropical and subtropical areas of Africa and the America’s. the species Lobelia inflata is found in temperate North America. Grows in moist, often poor soil in woods and fields and along roads throughout southern Canada and the Eastern US Parts Used: The leaves and flowering tops. The seeds are also used but more likely to induce nausea in moderate doses Herbal Actions: Analgesic, Anodyne, Antispasmodic, Antitussive, Anxiolytic, Calmative, Diaphoretic, Emetic if high dose, Expectorant, Purgative if high dose, Nervine, Counterirritant, Sedative Energetics: Hot, acrid, bitter, and astringent Constituents: Pyridine alkaloids, resin, gum, fats, lobelic acid, chelidonic acid, and fixed and pungent volatile oils Indications: "Used with caution and consumed in small quantities. Potent smooth muscle antispasmodic effective for respiratory spasms. Alleviates dry hacking, unproductive cough with difficult expectoration and dyspnea. Aids in treating couch, cold, dry bronchitis, pleurisy, croup, whooping cough, pneumonia, and dypsnea. Aids in respiratory symptoms that worsen when an individual is laying down. Consuming a low dose before sleep reduces insomnia related respiratory spasms. Useful for easing digestive spasms when gentler remedies have been exhausted. Effective for treating acute spasmodic asthma attacks. Especially when consumed onset. 5-15 drops as needed has reduced inhaler use. Treating muscles spasms and rigidity, myalgia, and neuralgia Nervine and central nervous system sedative that affects the sympathetic nerve ganglia. It should be used as a last resort when gentler nervine herbs are ineffective. Calms nervous system in individuals with severe anxiety, insomnia, multiple sclerosis, tremors, or seizures. Slows the hear rate and deepens respiration and lowers elevated blood pressure. Reduces sense of pain and oppression in the cheat. Improves circulation by relaxing blood vessels. Reduces nicotine withdrawal. Due to its lobeline content that fills nicotinic receptors. Lobelia poultice eases pain and inflammation due to insect bites and stings, bruises, sprains, strains, swelling, arthritis, swollen joints, tendonitis, carpel tunnel, boils, and bunions. Compress eases itching due to poison oak or poison ivy Eases neuralgia, neuritis and myalgia For insect bites combine the powdered herb with clay and water and apply to the inflamed area" Cautions and contraindications: Used cautiously with asthma medications. Contraindicated with prescription narcotics, analgesics, sedatives, and steroids. Excessive doses of lobelia especially the seeds or dry plant can cause nausea, vomiting, dizziness, cold sweats, headaches, respiratory depression, convulsions, and collapse. Lobelia will cause emesis before a poisonous amount can be ingested therefore it will not cause fatal results. Limit topical application to a small localized region. Do not consume while operating heavy machinery. Lobelia is eliminated by the kidneys. Pregnancy and Lactation: Contraindicated Preparations: "Use caution when making medicine with lobelia, overexposure will cause nausea. Tincture: Fresh flowering herb 1:4 70 - 95% ETOH, Recently dried herb 1:5 50% ETOH, Dry seeds 1:5 50 - 60% ETOH Acetum Extract: Dry herb 1:5 ACV Tea: not recommended as it is difficult to regulate the dosage of Lobelia Topical: fresh plan poultice, oil with ETOH intermediary, tincture diluted with water as a liniment" Dosages: "Tincture: fresh and recently dried herb 5 - 30 drops in 2- 4 ounces of water, up to four times daily for acute conditions. Dry seeds consume 5 - 15 drops in 2 - 4 ounces of water up to four times daily for acute conditions (use seed extract cautiously as an excessive voice can cause vomiting). Acetum Extract: Apply topically Tea: NA Topical: As needed"

Herbal Actions
Definition and Etymology

A potent, acrid respiratory antispasmodic and nervine used in very small doses to relax smooth muscle, ease acute asthma or bronchial constriction, calm severe spasms, and relieve intense anxiety or neuromuscular tension. Strong, fast-acting, and effective but must be used with caution.

Indications

Lobelia is a powerful smooth-muscle antispasmodic used in extremely small, careful doses. It relieves respiratory spasms, easing dry, hacking, unproductive coughs with difficult expectoration and shortness of breath. It is useful for cough, cold, dry bronchitis, pleurisy, croup, whooping cough, pneumonia, and dyspnea, especially when symptoms worsen when lying down; small bedtime doses can reduce insomnia caused by respiratory tension. It benefits acute spasmodic asthma attacks when taken at onset, and low doses may reduce reliance on inhalers.

Lobelia also relaxes skeletal and neuromuscular spasms, helping with muscle rigidity, neuralgia, myalgia, and severe tension patterns. As a strong nervine and CNS sedative, it is reserved for cases where gentler herbs fail. It calms the sympathetic nervous system in individuals with severe anxiety, insomnia, tremors, multiple sclerosis, or seizure tendencies. It slows the heart rate, deepens respiration, lowers elevated blood pressure, and eases chest oppression.

Lobelia supports withdrawal from nicotine due to its lobeline content, which interacts with nicotinic receptors. Topically, poultices or washes reduce pain, inflammation, and swelling from insect bites, stings, sprains, strains, bruises, arthritis, tendonitis, carpal tunnel, boils, and bunions. Compresses relieve itching from poison oak or ivy. Applied with clay, it soothes insect bites and inflamed tissues.

Body Systems
History

In the early 1800s, Samuel Thomson used lobelia as a relaxant and “diffusive” agent that moved vital force outward and expelled waste, contrasting sharply with the bloodletting practices of conventional physicians. His use of lobelia led to prosecution and accusations of poisoning, though no fatal outcomes were attributable to the plant. The Eclectics later adopted it as a valued vital stimulant. Traditionally, it was used topically for bronchopulmonary conditions and internally in very small doses for cardiac stagnation and patterns marked by nausea, a broad flabby tongue, engorged tissues, shallow breathing, and a bruised feeling in the chest.

Identification

Lobelia inflata is an herbaceous perennial whose stems exude milky latex. Leaves are linear-elliptic, 0.5–1.5 cm wide, arising basally or alternately along the stem. Inflorescences are typically racemes with bilaterally symmetrical flowers borne on twisted pedicels, causing the flowers to appear upside down. The tubular calyx and corolla have a five-lobed base, with the corolla forming a bilabiate structure—two lobes above and three below—in red, blue, or white. Connate stamens surround the style and extend beyond the corolla. The usually inferior two-chambered ovary matures into a many-seeded, two-valved capsule or a berry held within the persistent calyx.

Cautions and Contraindications

Use with great caution and only in small doses. Avoid combining with asthma medications, narcotics, analgesics, sedatives, or steroids. Excessive intake—especially of seeds or dried herb—can cause nausea, vomiting, dizziness, cold sweats, headaches, respiratory depression, convulsions, or collapse. Lobelia induces vomiting before reaching a poisonous dose and is not considered fatal. Avoid while operating machinery. Limit topical use to small areas. Excreted via the kidneys.

Preparations and Dosages

Tincture
Fresh flowering herb 1:4 (70–95% alcohol)
Recently dried herb 1:5 (50% alcohol)
Dry seeds 1:5 (50–60% alcohol)
Dose: 5–30 drops in 2–4 oz water, up to four times daily for acute conditions.
Seed tincture 5–15 drops—use with caution.

Acetum Extract
Dry herb 1:5 ACV.
Topical use.

Tea
Not recommended due to difficulty regulating dose.

Topical
Fresh plant poultice, oil (alcohol-intermediary), tincture diluted with water as a liniment.

References and Sources

Christina Sinadinos, David Hoffman, Bryan Bowen, all relevant CHSHS lectures.