Fortunately, you don't have to over-medicate yourself with conventional drugs, there are many natural and effective remedies for a sinus infection. Gargling with turmeric: Gargling with turmeric is very helpful in … Turmeric contains curcumin which helps heal the sinus cavity. Turmeric possesses an anti-inflammatory action. Garlic Inhalation. … This is a very well known treatment for a sinus infection. The Neti pot thins mucus and flushes it out of the nasal passages.