I took 1.5 Tablespoons instead of 2teaspoons of cough syrup Promethazine with Codeine. Will I be ok? Or should I be worried?

Prometh c Cod. While not impossible, It would be highly unusual to encounter any serious adverse side effects at this dosage in the standard US concentration. Transient somnolence, dizziness, constipation, dry mouth, blurred vision, urinary retention and other minor side effects may be noted.