A popular folk remedy for asthma involves a castor oil pack to cleanse the lungs. Homemade castor oil packs could draw toxins from the lungs and are an inexpensive remedy. However, scientific studies looking at its effectiveness are lacking. If you do try it with, it's essential to use organic cold-pressed castor oil, not the chemically extracted kind. While there is limited research on castor oil for asthma, people have used it for centuries.

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