As with any medication, Tadagra may cause side effects, including headache, flushing, indigestion, back pain, muscle aches, nasal congestion, and dizziness. If you experience any severe or persistent side effects, it's crucial to seek medical attention.Additionally, Tadagra may interact with certain medications, including nitrates, alpha-blockers, and other drugs used to treat erectile dysfunction. It's essential to inform your healthcare provider about all the medications you are taking to avoid potential interactions.