I used Sinarest for 3 days and still have sneezing and a blocked nose. Is it safe to continue, or can it cause side effects?

Is it safe to continue?
It is generally recommended not to use combination cold medicines like Sinarest (which typically contains a pain reliever/fever reducer, a decongestant, and an antihistamine) for more than 3 to 7 days without speaking to a doctor. Since your symptoms haven’t cleared up after 3 days, it’s best to consult a healthcare professional.
Reasons to seek medical advice now:
Symptoms Persist: If cold symptoms like a blocked nose and sneezing last longer than 7 days, it could indicate a bacterial infection, sinusitis, or an allergy that requires a different type of treatment.
Active Ingredients: Sinarest contains several active ingredients. One is a decongestant, and if used for too long (over a few days), nasal decongestants can sometimes cause “rebound congestion” (rhinitis medicamentosa), where your stuffiness gets worse when you stop the medicine.
Paracetamol (Acetaminophen) Risk: The tablet also contains paracetamol. Taking paracetamol for too long or in too high a dose (especially if you are taking other paracetamol-containing products) can cause liver damage.
Potential Side Effects with Extended Use:
Common side effects of the components in Sinarest include drowsiness, dizziness, dry mouth, and occasionally, increased heart rate or blood pressure. Prolonged or unsupervised use increases the risk of these side effects and the chance of liver issues due to the paracetamol component.
Next Steps:
Stop self-medicating and consult a doctor to determine the cause of your persistent symptoms and get guidance on the safest and most effective treatment plan moving forward.