Does it work?

Boswellia has been proposed as a potential therapy for asthma. Future studies are needed to assess the long-term efficacy and safety of boswellia and to compare the efficacy of boswellia to standard therapies. Boswellia should not be used for the relief of acute asthma exacerbations.

Dangers and possible side effects....

Boswellia is generally believed to be safe when used as directed, although safety and toxicity have not been well studied in humans. Avoid if allergic to boswellia. Avoid with a history of stomach ulcers or stomach acid reflux disease (GORD). Use cautiously if taking lipid-soluble medications, agents metabolized by the liver's cytochrome P450 enzymes, or sedatives. Use cautiously with impaired liver function or liver damage or lung disorders. Use cautiously in children. Avoid if pregnant due to potential abortifacient effects or if breastfeeding.