Important - we don't eat cows. We eat steer. Cows have been bred over the decades and centuries to give birth and milk, not to yield meat. That's important, because some cows are heavier than their steer counterparts (Holsteins, for example).
Also very dangerous is inducing a miscarriage by taking strong medications prescribed for other ailments and many of the ways to induce a miscarriage can actually end in loss of life or other very serious consequences.
Increasing vitamin C intake is one of the most popular methods to complete a miscarriage successfully. You should consume enough quantities of vitamin C orally each hour, but up to 6,000mg a day, until menstruation occurs. Cinnamon. Cinnamon is also helpful with natural miscarriage.