The best package to purchase is definitely the 6-bottle bundle. It would last you a period of 6 months. This is quite economical considering the price per bottle and also an effective method to save you from the hassles of limited stocks. If you choose to place an order for a single bottle or a 3-bottle bundle, there are chances for a break in consumption, breaking the required regularity in the formulation due to limited stocks or shipping delays. In order to avoid such undesired situations, it is better to order in bulk and be safe. However, the priority is your choice and convenience to choose the package option.