about premarin: "Have been known to make certain conditions worse, including asthma, diabetes, epilepsy, migraine. If you are using Premarin vaginal cream, you should be aware that this product can weaken latex condoms. What is the most important information I should know about conjugated estrogens? What should I discuss with my healthcare provider before taking conjugated estrogens, tell your doctor if you are pregnant. Because Premarin can increase the risk of heart attack, or stroke. What should I discuss with my healthcare provider before taking conjugated estrogens, tell your doctor if you are pregnant. Estrogens regularly to get the most benefit."