Certain precautions should be taken while or prior to administering the medicine to the pet. Neo Poly Dex Ophthalmic Ointment must not be given to animals that are allergic to its contents. The medication should not be prescribed for cats with possible chances of herpes virus infection. If the condition of the pet shows no improvement within 48 hours or if the condition deteriorates further, do consult a veterinarian. While applying the medicine, never touch the applicator tip of the bottle or tube to the eye or skin to prevent the medicine from getting contaminated.