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.
A quality manufacturer will ensure that their vitamins are at the listed strength on the label at the time of expiration. If the manufacturer does not list an expiration date, then they are liable for the listed strength for the entire time the product is in circulation. The Food and Drug Administration (FDA) does not require supplements to have expiration dates. However, quality manufacturers voluntarily list expiration dates because it is to their benefit. They test their vitamins rigorously to make sure they can successfully guarantee the label strength up until the expiration date.