For an 8-month-old baby weighing 6 kg, it is very important to consult your pediatrician before giving Wikoryl syrup. Wikoryl contains a combination of paracetamol, phenylephrine, and chlorpheniramine. Multi-ingredient cold medicines are generally not recommended for infants under two years of age without a doctor's direct supervision, as precise dosing is critical for their safety. Please have a pediatrician examine your baby to determine the safest treatment and correct dosage. In the meantime, keep your baby comfortable and well-hydrated.