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Cetirizine: Symptoms observed after an overdose of Cetirizine includes confusion, diarrhea, dizziness, fatigue, headache, malaise (feeling of discomfort), mydriasis (widening of the pupils), itchiness, restlessness, sleepiness, stupor (state of near-unconsciousness), tachycardia (fast heartbeat), tremor (rhythmic shaking movement in one or more parts of the body), and urinary retention.
Phenylephrine: Symptoms observed after an overdose of Phenylephrine includes headache, hypertension, reflex bradycardia (decrease heart rate), tingling limbs, cardiac arrhythmias (group of conditions that cause the heart to beat irregularly, too slowly, or too quickly), and a feeling of fullness in the head.
