Coconut water (different than coconut milk), continues to gain popularity as a sports drink. Athletes appreciate the natural salts, vitamins and minerals this tasty, clear liquid contains. Side effects are rare and usually related to coconut water processing or storage.
About a liter of coconut water comes from a young, green coconut, and is usually consumed fresh in tropical countries like the Philippines, Thailand and Indonesia. Coconut water also has healing properties, and was even used intravenously during WWII. Coconut water eventually becomes coconut flesh.
A 2005 study at Imo State University in Nigeria showed drinking coconut water after an overdose of the drugs acetaminophen (Tylenol) does not protect the liver and may enhance the toxic effects.
Allergic reactions to coconut water are rare. Few who have nut or latex allergies may have reactions to coconut water.
In March 2009, inspections in Georgetown, Guyana prompted the The Meat and Food Hygiene Section of the Mayor and City Council to issue a public health statement, warning people to avoid consuming coconut water in recycled bottles: The "process involved in pouring coconut water into bottles was very unhygienic."
Drink fresh coconut water directly from the coconut immediately or refrigerate it and use within 24 hours. Coconut water breaks down quickly from exposure to bacteria.