SubEx
Oil of Oregano·Support immunity·finding 05 of 10
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★☆☆Contested — the evidence disagrees with itself, or the finding carries a caution. A caution or conflict always shows one star, however strong the sources are.

Immune · decreases · contested

In one trial, an oregano oil nose spray beat a steroid for sinusitis

Over four weeks, 75 adults with long-lasting sinus symptoms improved far more on the oregano spray than on a steroid spray or a dummy one. It was sprayed into the nose, not swallowed.

What the study found

Sprayed in the nose, oregano oil beat a steroid for chronic sinusitis

In 75 adults with chronic sinusitis without polyps, four weeks of an oregano oil nasal spray, about 64 mg a day, cut a 22-item symptom score by 51.5 points, against 21.6 on a steroid spray and 11.8 on a sesame oil placebo. It is one trial of a spray, not of oil swallowed for a cold.

The caveat · One clinic, 25 a group, not repeated

The oregano nasal-spray trial ran at one clinic with 25 people a group and has not been repeated. Every group also followed the same Persian-medicine lifestyle routine, which may explain part of the placebo group's gain. A 2023 pooled ranking that put oregano first for this condition rests on this same trial.

What we don't know

The oregano nasal-spray trial ran at one clinic with 25 people a group and has not been repeated. Every group also followed the same Persian-medicine lifestyle routine, which may explain part of the placebo group's gain. A 2023 pooled ranking that put oregano first for this condition rests on this same trial.