Are there any side effects of nasal washes & sinus irrigation?

Performing a nasal wash or sinus irrigation is relatively harmless. The procedure only involves salt water and no drugs, so there is no risk of an allergic reaction. If the procedure is done correctly, the salt water will simply flow out of your nose, so none of the solution enters the body. Side effects, therefore, usually involve the discomfort of the procedure and the effect of the salt water on the nasal cavity. The most common side effects include: nasal pain, burning, stinging or irritation; the saline draining from the eyes instead of the lower nostril; or an unpleasant, temporary sensation that feels like drowning.

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