Combination pills contain both estrogen and progestins. According to the listings in the Physicians Desk Reference, all combination pills have the capacity to prevent implantation, and therefore all can cause early abortions, though it's impossible to tell how often they do so.
Is Yasmin an Abortifacient?
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Yasmin is a combination pill that uses a progestin that can trigger an increase in potassium load in the body. As such, there are some women who may suffer serious complications if they are at risk for kidney, liver or adrenal system diseases. The added burden of potassium can upset the sodium-potassium balance in the heart bringing on a heart attack.