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1. The dried leaves and tops of Lobelia inflata (family Lobeliaceae); lobelia contains several alkaloids: lobeline, lobelamine, lobelanidine, lobelanine, norlobelanine, norlobelanidine, and isolobelanine. The fluid extract and the tincture have been used as an expectorant in asthma and chronic bronchitis.
2. One of a class of alkaloids isolated from lobelia (1).
3. Any plant of the genus Lobelia.
Synonym(s): asthma-weed (1) , wild tobacco
Farlex Partner Medical Dictionary © Farlex 2012


Herbal medicine
An annual or biennial plant that contains alkaloids (isolobinine, lobelanidine, lobeline, lobinaline), chelidonic acid, fats and resin. Lobelia is emetic and expectorant, and was once used for asthma, respiratory complaints and for tobacco withdrawal syndrome (due to the content of lobeline); it has been applied topically for bites, poison ivy and fungal infections.

Toxic effects
Nausea, vomiting, coma, and possibly death by paralysis; it is deemed it poisonous by the FDA.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
References in periodicals archive ?
Either species of lobelia would make a fine candidate for a rain garden, with cardinal flower planted on the bottom where the soil is slowest to dry out and great blue lobelia planted a little further up the side of the rain garden.
Lobelia cardinalis L.: Cardinal flower; August; low, wet woods; infrequent; USIH 1012.
The cardinal flower and great blue lobelia will also tolerate wet conditions.
Native bees pollinate wildflowers such as May-apple, blazing star, cardinal flower, wild columbine, rattlesnake master, and many, many more.
Coral Bells, Cardinal flower, Weigelia, Butterfly Bush, Coral Honeysuckle, Trumpet Creeper, Swamp Azalea, Beebalm, Salvia, and Columbine are all good choices for Mississippi's climate and are easily incorporated into a garden.
Last year, for example, he planted scarlet runner beans and cardinal flowers, to attract hummingbirds, on a barren patch of earth facing the alley.
In spring there are plenty of yellow and blue flag irises, in summer the pink swamp milkweed and in fall red cardinal flowers and blue lobelia.
Majure and florist William Brewer of Cardinal Flowers created all the arrangements for the ceremony and reception, including a floating monogram used as a focal point for the pool.
Zion Canyon was a different story: no cougars, no aster and cardinal flowers, and only one toad compared to the 150 they found in the backcountry.
It's not far from PEEC to the Delaware River, and the center's naturalist, Pat Scheuer, took us on a three-hour Kittatinny Canoes float from Milford to Dingmans Ferry, during which we encountered blue herons, cormorants, kingfishers and merganser ducks, not to mention bright red cardinal flowers. Even in light drizzle it was a magical time and the kids didn't complain about the soggy sandwiches.
Flowers that fill such dual roles include marsh marigold, true forget-me-nots, cardinal flowers, great lobelia, yellow coneflower, bee balm, swamp milkweed, Joe-Pye-weed, lance-leaved goldenrod and New England aster.