PANADOL COLD & FLU NASAL caplet contains multi-ingredient formula that could relieve cold and flu fast. Acetaminophen produces analgesia by elevation of the pain threshold and antipyresis through action on the hypothalamic heat-regulating center, which does not irritate stomach. Phenylephrine hydrochloride has fast relief of nasal congestion with long-lasting efficacy. Chlorpheniramine maleate is an antihistamine that helps to relieve the irritation of allergic symptoms eg, sneezing, itching and watery eyes.