This product is a disinfectant and preservative, which has a killing effect on a variety of bacteria, bacterial spores, viruses, fungi, etc. Its mechanism of action is that after contacting the wound or the affected area, it can depolymerize and release the iodine contained in it to exert a bactericidal effect. It is characterized by low irritation to tissues and is suitable for skin and mucous membrane infections.

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This product is a prodrug of acyclovir. It is rapidly absorbed after oral administration and quickly converted into acyclovir in the body. Its antiviral effect is exerted by acyclovir. After acyclovir enters the herpes infected cells, it competes with deoxynucleoside for viral thymidine kinase or cellular kinase. The drug is phosphorylated into activated acyclosine triphosphate, which competes with deoxyguanine triphosphate for viral DNA polymerase as a substrate for viral replication, thereby inhibiting viral DNA synthesis and showing antiviral effect. The antiviral activity of this product in vivo is better than that of acyclovir, and the therapeutic index for herpes simplex virus type I and type II is 42.91% and 30.13% higher than that of acyclovir, respectively. It also has a high efficacy against varicella zoster virus and has very low toxicity to mammalian host cells.

It has a good antitussive effect, and its antitussive effect on guinea pigs and rabbits is 1/10 to 1/20 of that of codeine, which is similar to racemic hydroxypropylpiperazine; after oral administration to conscious dogs, it can dose-dependently inhibit the cough reflex, and the maximum inhibition at high doses is 93%; it can reduce the response of cat vagus nerve C fibers to chemical stimulation, and its antitussive effect may be mediated by its inhibitory effect on C fibers.