Supporting a wealth of wildlife, the mangroves are a unique habitat. Mangroves are like botanical amphibians, and form some of the most productive ecosystems on Earth. They provide food, shelter, firewood and construction materials that have been harvested sustainably for thousands of years.
Check the expiration date on your vitamin supplements for the first indication of how long they'll last. Vitamin supplements typically bear an expiration date of a year or so from the time they're manufactured. If you store them properly, they should stay potent for at least this long. After the expiration date, you can still expect to use them without harm, but there's no guarantee on potency.
Can multi-vitamins go bad/expire? Can multi-vitamins go bad/expire? I've kept this massive jar of Centrum (stupid Sam's club) for about 4 or 5 years now and will occasionally get in a healthy mindset and take a pill a day for about a month. I'm not really concerned about the expense of replacing the vitamins, if need be, but I'd hate to trash the lot if they're still decent.