Paracetamol: Changes in number of WBC & platelets eg, agranulocytosis, leukopenia, neutropenia, pancytopenia, thrombocytopenia; allergic reactions; minor stomach & intestinal disturbances; rare cases of serious skin reactions (ie, SJS, TEN & acute generalized exanthematous pustulosis). Phenylephrine HCl: Anxiety; dizziness, restlessness; arrhythmia, palpitation; pallor; resp distress; weakness. Chlorphenamine maleate: Sleepiness & drowsiness; headache; blurred vision, visual disturbance; tinnitus; chest tightness; decreased BP; constipation, diarrhea, GI discomfort, nausea, vomiting; muscle weakness; difficulty urinating; dryness of mouth, nose & throat; irritability. Phenylephrine HCl & chlorphenamine maleate: Insomnia/sleeplessness, nervousness; tremor; increased BP.