Used for rehydration in cases of dehydration due to vomiting, diarrhea, or excessive sweating. Delivered intravenously to restore fluid and electrolyte balance. Commonly used in hospitals during surgery or shock to maintain blood volume. Also used to flush wounds and clean contact lenses. Helps deliver medications through IV infusions by acting as a diluent. Used in nasal sprays to relieve congestion by moisturizing nasal passages.