Hi Sharfie –
I base the dosage on the assumption that a person is 100 lbs. So a 25 lb. dog should get 1/4 the recommended human dose, a 50 lb. dog should get 1/2 the recommend human dose, a 75 lb. dog should get 3/4 the recommended human dose and dogs 100 lbs. + should get the full human dose. With most supplements (such as probiotics) there’s no real danger of overdose so it’s not critical that you get the dosage exactly right. A good rule of thumb for fish oil is to give enough to provide about 100 mg. combined EPA and DHA per 10 lbs. of body weight.
