Trifexis is a prescription medication and cannot be legally purchased in the U.S. without authorization from a veterinarian.
Report: Availability and Purchase of Generic Trifexis (Spinosad + Milbemycin Oxime) buy generic trifexis
Since a direct generic is unavailable, owners often use "off-label" combinations of separate medications to achieve the same results more affordably: Trifexis - ShotVet There is currently no generic substitute available. Trifexis is a prescription medication and cannot be