Other possible side effects include a fast heartbeat, shortness of breath, chest pain, or difficulty breathing. If you experience these symptoms, you should seek medical help right away. In addition, you should avoid drinking alcohol or eating grapefruit while you are using Sildenafil citrate. These foods can increase the effects of this drug and cause serious problems. Similarly, you should not use nitrate drugs like nitroglycerin, as these can cause an irregular heart rate and low blood pressure. You should also stop taking Cenforce 150 mg if you are using nitrate-based medicine for chest pain problems. You should also tell your doctor if you are taking any other medications for erectile dysfunction or if you have a history of sexually transmitted diseases (STDs). It is vital to let your doctor know about all the medicines you are currently taking, as well as those you have taken in the past. The recommended dosage of this medication is one tablet per day. You should not take more than this as it could lead to an overdose and other adverse effects. You should also avoid smoking while taking this drug as it can increase the risk of side effects.