Dosage intervals are 6 to 8 weeks but during summer (when at grass) dose every 6 to 8 weeks. The oral syringe which also comes in caramel flavour will treat up to 600 Kg bodyweight whereas the granules which are administered by mixing with the feed will treat up to 300 Kg bodyweight. Please remember that a DOUBLE dose of Strongid P is required for tapeworm control.