How long will my CBD oil bottle last?

Of course, it all depends on how much you use.  However, the most common daily usage for adults for health maintenance is 15mg.  So, on this basis, a 500mg bottle would last 33 days, a 1500mg bottle would last 100 days, a 2500mg bottle would last 167 days and a 5000mg bottle would last 333 days, or approximately 11 months.