Shop Heartland Vet Supply & Pharmacy for Isoniazid.
We carry Isoniazid in tablet form: 500mg in 100 and 500 count bottles. Our prices and customer service is the best around.
Shop all departments including vaccines, joint medicines, ulcer
treatments, just to name a few -- for horses, dogs, cats and humans.
And remember, when your order totals $75 or more before taxes, you qualify for free ground shipping (except for vaccine orders).