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.
The expiration date is a guideline, and most products are good for a short while after expiration if they have been properly stored; but you should not depend in it. If its just a few days then it is probably still okay. Try tasting it and if it tastes strange then discard it.