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					Originally Posted by  LordRanger     I give them the stuff that protects them from covid.  LOL.  They get a little lethargic the next day.  I think part of it is that they are small dogs, and the dosage at the bottom end tends to be a bit large for them.  I think the side effects are about equivalent to what I get if I get a flu shot.   |  
 
  There is no *dosage* on Heartgard. But, of course, you haven't said which one you use.  I don't know of any heartworm prevention that is *dosed* unless you are giving Ivermectin.