Sildenafil citrate tablets Cenforce 150 is not for use by women, only for men. Mixing it with nitrate-based medications (often given for chest pain or angina) can be dangerous. Avoid using this medicine (low blood pressure) if you have recently experienced a stroke, heart attack, or hypotension, severe heart or liver problems, or hypotension. Take it an hour or so before any sexual activity. When you are sexually aroused, this medicine will help you achieve an erection. On the other hand, this drug will not work without sexual stimulation. You can take this pill with food or on an empty stomach. This medicine should be taken only as prescribed by your doctor.