Acyclovir is an antiviral medication that is used to treat herpes infections. It is not used to treat allergies. Therefore, there are no alternative medications to acyclovir for allergies.

According to Drug Patent Watch [1], Acyclovir is a generic medication that has been available since 1985. It is used to treat herpes infections, including genital herpes, cold sores, shingles, and chickenpox. It works by stopping the growth and spread of the virus, which helps to reduce the severity and duration of symptoms.

The American Academy of Allergy, Asthma & Immunology [2] confirms that Acyclovir is not used to treat allergies. It is important to note that allergies are caused by an overreaction of the immune system to a substance that is normally harmless. Antiviral medications like Acyclovir are not effective in treating allergies.

A study published in the Journal of the American Academy of Dermatology [3] investigated the use of Acyclovir in the treatment of eczema herpeticum, a rare complication of eczema that is caused by a herpes simplex virus infection. The study found that Acyclovir was effective in reducing the severity and duration of eczema herpeticum, but it is important to note that this is not an allergic condition.

In conclusion, there are no alternative medications to Acyclovir for allergies. Acyclovir is an antiviral medication that is used to treat herpes infections, not allergies. If you are experiencing allergies, it is important to consult with a healthcare professional to determine the appropriate treatment plan.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ACYCLOVIR
[2] https://www.aaaai.org/allergist-resources/ask-the-expert/answers/old-ask-the-experts/acyclovir
[3] https://pubmed.ncbi.nlm.nih.gov/10644024/