How should the canister of the Chemidex Pharma Ltd prednisolone sodium metasulphobenzoate 20 mg/dose rectal foam product be prepared before first use?

For the Chemidex Pharma Ltd prednisolone sodium metasulphobenzoate 20 mg/dose rectal foam product, shake the canister before use, remove and discard the small plastic safety tag beneath the button, push an applicator nozzle onto the canister’s side arm, and align the cap’s semi-circular cut-out with the nozzle.