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Lobelia
has a long history of use as an herbal remedy for respiratory ailments such
as asthma, bronchitis, pneumonia, and cough. Native Americans historically
smoked lobelia as a treatment for asthma. In the 19th century, American
physicians prescribed lobelia to induce vomiting in order remove toxins from
the body. Because of this, it earned the name "puke weed." Today, lobelia is
considered an effective expectorant, meaning that it helps clear mucus from
the respiratory tract. Although few studies have thoroughly evaluated the
safety and effectiveness of lobelia, some herbalists today incorporate
lobelia into a comprehensive treatment plan for asthma.
Lobelia has not been extensively studied in animals or in people. However, a qualified healthcare practitioner may recommend this herb (usually in combination with other herbs) for the treatment of respiratory tract disorders or symptoms. An active ingredient in the lobelia plant, lobeline, is similar to nicotine in its effect on the body. Like nicotine, it stimulates nerves in the central nervous system. In fact, lobeline has been used as a nicotine substitute in many anti-smoking products and preparations designed to break the smoking habit. In 1993, however, the U.S. Food and Drug Administration (FDA) prohibited the sale of lobiline-containing smoking products because, according to the FDA report, they lacked effectiveness in helping people quit or reduce smoking. It also has a reputation as a mild euphoriant, producing feelings of happiness and well-being similar to that obtained from smoking nicotine. It is important to note that lobelia is a potentially toxic herb. Lobelia can be safely used in very small doses (particularly homeopathic doses), but moderate to large doses can cause serious adverse effects ranging from dry mouth and nausea to convulsions and even coma (see Precautions). Under the guidance of a qualified healthcare practitioner, however, lobelia, in combination with other herbs that affect the respiratory system, is considered relatively safe. Recommended DosageTherapy should begin with lower dosages and increase gradually, depending upon response. Pediatric Adjust the recommended adult dose to account for the child's weight. Most herbal dosages for adults are calculated on the basis of a 150 lb (70 kg) adult. Therefore, if the child weighs 50 lb (20 to 25 kg), the appropriate dose of lobelia for this child would be 1/3 of the adult dosage. Adult The following are recommended adult doses:
PrecautionsThe use of herbs is a time-honored approach to strengthening the body and treating disease. Herbs, however, contain active substances that can trigger side effects and interact with other herbs, supplements, or medications. For these reasons, herbs should be taken with care, under the supervision of a practitioner knowledgeable in the field of botanical medicine. Lobelia is considered a potentially toxic herb. Active substances in lobelia bind to nicotine receptors in the nervous system and can cause serious symptoms such as profuse sweating, nausea, vomiting, diarrhea, tremors, rapid heartbeat, mental confusion, convulsions, hypothermia, coma, and even death. A total of 20 mg lobelia per day should not be exceeded. Doses higher than 500 mg are highly toxic and, again, could be fatal. People with high blood pressure, heart disease, tobacco sensitivity, paralysis, seizure disorder, and shortness of breath as well as those recovering from shock should not take lobelia. Pregnant and breastfeeding women should also avoid this herb. Large doses can cause nausea, vomiting, upset stomach, convulsions, sweating, accelerated heart beat and a dangerous drop in blood pressure. At worst, coma can result and lead to death. As lobelia's safety is highly questionable, do not use without the recommendation and close supervision of your doctor. Possible InteractionsThere are no known scientific reports of interactions between lobelia and conventional medications. References
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