https://www.marijuanadoctors.com/conditions/asthma/
FTA: Marijuana has anti-spasmodic, anti-anxiety and anti-inflammatory properties, making it ideal for treating asthma for some people. The herb may also address certain issues with conventional treatments such as inhalers.
According to a 1976 study, THC acts as an immediate and effective bronchodilator in asthma patients. Researchers in the study administered THC in patients as an aerosol spray at a mere 1/5 of a milligram dose.
I found it helped me. In the 70s, can't speak for today's weed.
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