I had this very basic, but in my opinion, profound thought this morning.
Water is often the best first step for medical issues.
Cuts/scrapes - Wash to avoid infection.
Headache - Drink some water, and take an aspirin.
Dehydrated - Drink some more water.
Cramps - Hot water bottle, hot tea.
Sore throat - Gargle salt water.
Skin or eye irritant - Flush with cool water.
Nausea - Sip ice chips.
Aches and pains - Hot shower.
Fever - Cold shower.
Inflammation/swelling/bruising - Ice.
Sprains and strains - Ice and elevation, where applicable.
Sinus pressure - Steam, hydration.
Upset stomach - Water with sodium bicarbonate.
Exposure to nuclear radiation - Silkwood shower.
Every fluid we consume is water-based. Unless you're drinking pure grain alcohol which you really shouldn't. Even if you don't have a cold.