Premarin could cause adverse side effects such as any sort of pain or pressure in your chest, pain spreading to your jaw or shoulder, nausea, or excessive sweating.
You may also show signs of a stroke where you could feel numb or weak suddenly, head hurting severely, slurring of speech, or difficulties with eyesight or balance.
Additionally, signs of a blood would include a sudden inability to see, a sharp pain in the chest, loss of breath, coughing up blood, and pain or a warm sensation in one or both of your legs.
Other side effects include, swollen or tender stomach, yellow skin or eyes, cognitive impairment, irregular bleeding in vagina, pain in pelvis, lump in breast, high calcium levels in blood, nausea, pain in stomach, passing gas, headache, back pain, insomnia, depression, breast pain, itching or discharge of vagina, irregular alterations in your menstrual cycle.
Premarin could cause an allergic reaction where you may develop hives, breathing problems, face swelling, lips swelling, tongue swelling or throat swelling. If you show any of these symptoms, seek emergency aid at once.