Panadol Cold & Flu Extra caplet contains multi-ingredient formula that could relieve cold and flu symptoms 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. Caffeine is a stimulus to relieve the tiredness caused by cold without drowsiness, let patient feel comfortable. Vitamin C could help patient to recover fast during cold period. Terpin Hydrate is an effective expectorant by increasing bronchial secretion. Noscapine is a centrally acting cough suppressant which is used to relieve non-productive cough.