sis to avoid too much stress sa liver nya, you can give liver supplements like liv52, liverolin, sylimarin capsules. talk also to your vet about your concerns para mapanatag loob mo.
addition to post: naalala ko pala yung dog ng friend ko injectable din yung heartworm preventive nya. and that dog died at a very young age, kaka2 pa lang nya nun, cancer ang cause at sobrang napaisip ako kasi very healthy ang dog na yun, nagulat na lang ako ng biglang may tumor daw and within few weeks nawala na sya. hay naku, may something wrong talaga sa mga injectables so be very wary mga sis, do your research parati at wag ibigay ang 100% trust sa mga vets.