Saline Rinse Calculator
Pick your rinse bottle size and get the exact non-iodized salt and baking soda - the same pharmacy-standard packet recipe at a few cents per rinse instead of a dollar.
The safety rule comes first because it is the only fatal one on the page: the water must be boiled and cooled or distilled, never straight from the tap. During allergy season a daily rinse after being outside clears pollen before it sets up inflammation - the best evidence-to-cost ratio on the allergy shelf.
How to use
- Boil the water a minute and cool it, or use distilled - always.
- Weigh the salt and soda; non-iodized salt only.
- Rinse daily after outdoor exposure in pollen season.
Frequently asked questions
How much salt do I put in a sinus rinse?
About 9.4 grams of non-iodized salt per liter - 2.25 grams in a 240 ml squeeze bottle - plus baking soda to buffer. The calculator scales it to your bottle exactly, matching the commercial packet.
Can I use tap water for a nasal rinse?
Never straight - tap, lake and shower water carry a rare but fatal amoeba risk. Boil for a minute and cool, or use distilled. This is the one rule on the page with no exceptions and no home remedies.
Why does my sinus rinse sting?
Iodized table salt or missing buffer: iodine and anti-caking agents irritate, and the baking soda is what matches your body pH so the rinse feels like nothing. Use pickling or canning salt plus the soda.
How often can I rinse my sinuses?
Daily during allergy season is standard and safe with clean water - rinse after outdoor exposure to clear pollen before it inflames. Skip when fully blocked; forcing through creates pressure without benefit.