Stimulant expectorants can stimulate the gastric mucosa, reflexively causing increased secretion of respiratory glands, diluting sputum and making it easier to cough up, thus producing an expectorant effect.

This product is an acetanilide antipyretic analgesic. It inhibits cyclooxygenase and selectively inhibits the synthesis of prostaglandins in the hypothalamic temperature regulation center, leading to peripheral vasodilation and sweating to achieve an antipyretic effect. Its antipyretic effect is similar to that of aspirin. It inhibits the synthesis and release of prostaglandins, etc., increases the pain threshold and has an analgesic effect. It is a peripheral analgesic, weaker than aspirin, and is only effective for mild and moderate pain. This product has no obvious anti-inflammatory effect.

The pharmacological action of compound ephedrine hydrochloride syrup is not specifically described, but generally ephedrine hydrochloride has the effect of constricting blood vessels and relieving symptoms such as nasal congestion.

Central antitussive drugs can inhibit the cough center in the medulla oblongata to produce an antitussive effect. Its antitussive effect is equal to or slightly stronger than codeine. Long-term use will not cause dependence or tolerance.

Expectorants increase the secretion of respiratory glands, dilute sputum, and make it easier to cough up