Three years. According to China Body Network. Neptune wine is a kind of health wine, which contains longan, medlar and Amomum villosum, so it has a shelf life, while Coconut Island Neptune wine has a shelf life of three years. If it is more than three years later, you can't drink such wine, otherwise the substances such as medlar, longan and sea cucumber will change qualitatively. If you drink it again at this time, it will cause gastrointestinal discomfort.