What is the recommended treatment for trichomonas infection?

Metronidazole is the recommended treatment for trichomonas infection due to its effectiveness in targeting the organism that causes the infection, Trichomonas vaginalis. This medication works by disrupting the DNA synthesis in the parasite, leading to its death. The standard regimen for treating uncomplicated trichomoniasis typically involves a single dose of metronidazole; however, in certain cases, a longer course or higher dosing may be required based on the clinical judgment and the specific circumstances of the patient.

The other options presented do not align with the standard treatment guidelines for trichomonas infection. Acyclovir is used for herpes simplex and not effective against trichomonas. Azithromycin, while used to treat various bacterial infections, is not indicated for trichomoniasis. Doxycycline is primarily effective against certain bacterial infections like those caused by chlamydia but does not target the trichomonas organism. Hence, metronidazole is the most appropriate choice for treating trichomonas infections.