It depends on which meds you are giving. Each has an age and weight requirement so make sure you check the box before giving it. Frontline can be given after 8 weeks old. Interceptor can be given to dogs over 2 lbs and older then 4 weeks. Heartgard can be given to any weight as long as the pup is older then 6 weeks. So make sure you check.
__________________ Kellie  and  Morgan |