250,000 IU vitamin D3/day for 5 days. Amazon has Biotech 50,000 IU D3.

That protocol is called a stoss dose of vitamin D and is used for acute situations such as influenzas and respiratory problems.

It worked for my SIL sinus infection. It works for TB, and it's worked in some cases of H1N1. I don't know if it would work for a situation with polyps involved.