Essential Oils for Asthma: Risks and Safety

Our knowledge of the relationship between essential oils and asthma has been limited by study size and lack of studies in humans.

Lavender

“For people with asthma, lavender essential oil can often be used safely with a few precautions. Topical use is typically safer; just dilute a few drops with a carrier oil, like coconut or olive oil, to avoid skin irritation,” Dasgupta says. “If you’d like to diffuse it, start with only a couple of drops in a well-ventilated room and see how you feel, as strong scents can sometimes trigger symptoms. Avoid inhaling it directly from the bottle. Starting slow and in small amounts can help you enjoy lavender without risking asthma flare-ups.”

Frankincense

Another essential oil, frankincense, has been used to support respiratory health for centuries. Still, Dasgupta says there’s insufficient evidence to suggest it’s an effective asthma treatment.

“Frankincense is often used to reduce inflammation and help breathing, but there’s limited scientific support for its use with asthma,” Dasgupta says. “It’s generally safe in a diffuser but should be used with your doctor’s guidance.”

Neither study was very long or large, though, and more research is needed to know whether frankincense is safe or effective for people with asthma.

Tea Tree Oil

“Known for its anti-inflammatory and antimicrobial properties, tea tree oil might reduce irritation in the airways, but it can also cause allergic reactions and worsen asthma for some,” Dasgupta says.

Before topical application, Dasgputa recommends diluting tea tree oil with a carrier oil to reduce the risk of skin irritation. “I’d start with a small amount in a well-ventilated space and see how you feel,” he says. “It’s always smart to check with your doctor before using it, just to be safe.”