Phenylpropanolamine HCl: Aggressiveness (particularly in young childn), anxiety, confusion, insomnia/sleep disturbance, nervousness; agitation, dizziness, restlessness; sudden persistent severe headache, tremor; blurred vision; chest tightness, palpitation; high BP; nausea; irritability. Chlorpheniramine maleate: Insomnia/sleeplessness, nervousness; headache, tremor; blurred vision; visual disturbance; tinnitus; chest tightness; increased or decreased BP; constipation, diarrhea, GI discomfort, nausea, vomiting; muscle weakness; difficulty urinating; mouth, nose & throat dryness; irritability. Paracetamol: Agranulocytosis, leukopenia, neutropenia, pancytopenia, thrombocytopenia; allergic reactions; minor stomach & intestinal disturbances; SJS, TEN & acute generalized exanthematous pustulosis.