When you notice blood in your sputum, even if it's slight, it's important to be cautious. Elgadex syrup contains chlorpheniramine maleate and dextromethorphan, which help relieve allergy symptoms and suppress cough, but coughing up blood may indicate an underlying issue that requires medical evaluation.

Key points to consider:

• Do not self-medicate: Using Elgadex syrup without knowing the cause of blood in sputum might mask symptoms or delay diagnosis.
• Seek medical attention: Consult a doctor promptly to identify the cause, which could range from infections to inflammation or other serious conditions.
• Avoid irritants: Stay away from smoking or exposure to irritants that could worsen your symptoms.
• Monitor symptoms: Watch for increased bleeding, fever, chest pain, or difficulty breathing, and report these immediately to your doctor.

In summary, avoid taking Elgadex syrup solely because of slight blood in sputum without professional advice. Please see a doctor for proper diagnosis and treatment guidance.To narrow down potential causes, we will need some more information.Please tell me your age and gender.