Spay/Neuter Store › Panacur (3 day dose) Panacur (3 day dose) $16.00 Adds 3 day dose of Panacur to a spay/neuter trip. Cannot be added with Pyrantel. Add To Cart Added! Adds 3 day dose of Panacur to a spay/neuter trip. Cannot be added with Pyrantel.