Cenforce Professional (or any medication containing sildenafil citrate) in the following circumstances:

Nitrate Medications: If you are taking nitrate medications for chest pain (angina) or heart problems, combining them with sildenafil can cause a severe drop in blood pressure. This combination can be dangerous and potentially life-threatening.

Heart Conditions: If you have a history of heart disease or have recently had a heart attack or stroke, it's important to consult your doctor before taking Cenforce Professional.

Low Blood Pressure: If you have low blood pressure (hypotension), taking sildenafil may further lower your blood pressure and cause dizziness, fainting, or even a heart attack in extreme cases.

Liver or Kidney Problems: Individuals with severe liver or kidney disease should use Cenforce Professional with caution, as it may increase the levels of the drug in the body, leading to potential side effects.

Vision Problems: If you have a history of vision problems such as retinitis pigmentosa or non-arteritic anterior ischemic optic neuropathy (NAION), sildenafil can exacerbate these conditions.

Allergic Reactions: If you are allergic to sildenafil or any other ingredients in Cenforce Professional, avoid taking this medication.

Always consult with a healthcare provider before starting or stopping any medication, especially if you have underlying health conditions or take other medications regularly.