Typically, acyclovir cream is not a cure for cryptosporidium bites. Cryptosporidium is acidic in its toxicity, and an alkaline solution can be used to neutralize some of the venom and can effectively prevent skin damage from the venom. Acyclovir cream is not associated with this treatment. Acyclovir cream is mainly used to treat herpes simplex or herpes zoster infections, so it is not a treatment for cryptosporidium bites. Its mechanism of action is to inhibit viral replication by interfering with viral DNA polymerase, and it has an inhibitory effect on herpes simplex virus, varicella zoster virus and cytomegalovirus. The use of this product can be seen mild pain, burning, tingling, itching, as well as skin rash and other adverse reactions, it is recommended to stop the drug and seek medical attention. Allergic to the product is prohibited, allergic people should be cautious, and pregnant women, lactating women should not use. In addition, it is recommended that patients use Acyclovir Cream under the guidance of a doctor, and should not use it privately to avoid unnecessary trouble.