Sildigra XL Plus 150 mg may cause side effects in some individuals. Common side effects of sildenafil citrate include headache, flushing, indigestion, nasal congestion, and dizziness. More serious side effects are rare but may include sudden vision or hearing loss, chest pain, and priapism (prolonged erection). It's essential to seek medical attention if you experience any severe or persistent side effects while taking Sildigra XL Plus 150 mg.