Most lifters start with 0.2–0.3 g of baking soda per kilogram of body weight about an hour before hard, high-intensity training.

A typical sitz bath uses 4–5 tablespoons of baking soda in warm water for short-term yeast infection itch relief, alongside proper antifungal care.

For a shallow infant bath, many pediatric sources suggest about 2 tablespoons of baking soda in warm water for short, supervised soaks.

For a standard tub, use about 1/4–1/2 cup of baking soda in warm bathwater, adjusting the amount down for children and small sitz baths.

A standard sitz bath for irritation relief uses about 2 to 4 tablespoons of baking soda dissolved in warm water.

For adults, a typical home dose is 1/2 teaspoon of baking soda dissolved in 4 ounces of water, taken only occasionally for mild stomach upset.

A half teaspoon of baking soda in plenty of water can ease occasional indigestion for healthy adults when used carefully and within package limits.

For a standard adult bath, use about 1/4 to 1 cup of baking soda, depending on tub size and purpose.

Baking soda is not a recommended UTI treatment; see a health professional for antibiotics and safer ways to ease burning and urgency.

Most runners who use baking soda around hard efforts test about 0.2–0.3 grams per kilogram of body weight in training long before race day.