An isotonic solution has the same salt concentration as your body. Listening to the

Although we've all heard of people who are allergic to aspirin, we might not be aware that they are allergic to salicylates, which are the natural salicylate compounds that are also found in so many foods, personal care products, toothpastes and pain relief products. Molds are a component of the household, and large quantities of mold spores in your environment pose a threat for allergies (allergic fungal sinusitis). Fortunately, most cases of sinus congestion will eventually go away.

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