What Researchers Did
Researchers conducted a systematic review of 41 randomized clinical trials to assess the efficacy and safety of Chinese herbal medicine for idiopathic sudden sensorineural hearing loss.
What They Found
They identified 41 trials involving 3560 participants, which primarily compared conventional therapies with or without Chinese herbal medicine. No trials compared herbal medicine alone with a placebo, and none blinded participants or observers to the herbal medication.
What This Means for Canadian Patients
Given the lack of high-quality evidence, Canadian patients should be cautious about using Chinese herbal medicine for sudden sensorineural hearing loss. More rigorous research is needed to determine its true benefits and risks.
Canadian Relevance
This study has no direct Canadian connection.
Study Limitations
A significant limitation was the absence of trials comparing Chinese herbal medicine alone with a placebo, and the lack of blinding in all included studies.