Methimazole ( Topi - Click ) Transdermal Gel Pen - prescribed to treat hyperthyroidism in cats and dogs.
Each 9ml Topi Click pen contains 180 clicks (20 clicks per ml). Topi Click pens have a refill badge that is displayed when 32 clicks remain in the pen. Topi click pens have a rubberized tip allowing for easy administration of medication.