People who are taking cilostazol should not drink grapefruit juice or eat grapefruit, since it can increase the amount of medicine in the body. Smoking or using other kinds of tobacco may also alter the level of cilostazol in the body. Tobacco can also worsen the symptoms of your condition. You should talk to your doctor about smoking and cilostazol, and ways to decrease tobacco products or to get help with quitting smoking. Cilostazol can be passed to an infant through a mother's breast milk, and doctors don't know how it might affect a developing or nursing baby. If you are breastfeeding, talk to your doctor about whether you should stop taking the medicine or stop nursing. Since lightheadedness can sometimes occur while taking cilostazol, you should be careful driving or using heavy machines until you are comfortable with the way the medicine affects you. Alcohol can increase this effect, so it is better to avoid alcohol or use it with caution while on the medication. Finally, since cilostazol can increase bleeding, care should be taken to inform any medical personnel that you are taking the medication before any medical procedure, including surgery, dental procedures or emergency room procedures.