It can relax bronchial smooth muscles, shrink bronchial mucosal blood vessels, reduce congestion and edema, and improve airway obstruction.

It can reflexively increase the secretion of respiratory mucosal glands, making it easier to discharge sputum and facilitating the removal of sticky sputum.

It can relieve cough, expectorant and asthma.

Can clear the lungs and relieve asthma

It can increase the secretion of respiratory mucus, dilute sputum, and make it easier to cough up.

It is a mucosal protective antitussive drug that can cover the inflamed pharyngeal mucosa to reduce the stimulation of local sensory nerve endings, thereby exerting an antitussive effect.

Sodium glycerophosphate is a phosphorus supplement used to meet the body's daily phosphorus needs. Phosphorus is involved in bone formation and in the composition of cell membranes in the form of phospholipids. Phosphorus is also related to the activity of many metabolic enzymes and plays a vital role in energy metabolism.

Caffeine can increase the content of cyclic adenosine monophosphate (cAMP) in cells. Small doses can enhance the excitation process of the cerebral cortex, invigorate the spirit, and relieve fatigue. Large doses can excite the medulla oblongata center.

Vitamin B1 combines with adenosine triphosphate to form vitamin B1 pyrophosphate, which is a necessary coenzyme for carbohydrate metabolism. Vitamin B1 can inhibit the activity of cholinesterase. When it is deficient, the activity of cholinesterase is enhanced, the hydrolysis of acetylcholine is accelerated, and the conduction of nerve impulses is impaired, affecting gastrointestinal and myocardial functions.

Nicotinic acid can be converted into nicotinamide in the body, and then combined with riboadenin to form nicotinamide adenine dinucleotide (coenzyme I) and nicotinamide adenine dinucleotide phosphate (coenzyme II), which are essential for lipid, amino acid, protein, purine metabolism, tissue respiration oxidation and glycogenolysis. Nicotinic acid can reduce the effect of coenzyme A; it affects the transport of cholesterol in the blood by inhibiting the synthesis of very low density lipoprotein (VLDL). Nicotine also has the effect of peripheral vasodilation.