Kamagra 100 mg, which contains sildenafil citrate, is commonly used to treat erectile dysfunction (ED) by improving blood flow to the penis. However, it may not be suitable for everyone, and certain individuals should avoid Kamagra 100 mg or use it with caution. Kamagra 100 mg is not recommended for men with severe heart conditions, such as those with heart failure, recent heart attack, or unstable angina. The drug can lower blood pressure, which may be dangerous for people with cardiovascular issues. Kamagra 100 mg should be avoided by individuals with retinitis pigmentosa or other hereditary retinal conditions, as sildenafil can affect vision.