The majority of our parasiticide products (Nexgard, Bravecto, Revolution) are sold as either a 1 pack / 3 pack / 6 pack / 12 pack. Pack size refers to the amount of chews or pipettes in each pack. For example a 3 pack of Nexgard contains 3 Nexgard chews. A 6 pack of Nexgard contains 6 Nexgard chews. A 12 pack of Nexgard contains 12 Nexgard chews.