 [ Symptoms ] why have experts recommended lowering levels of acetaminophen in prescription and over the counter drugs [ Disease ] you probably will not find it it most likely was black tar that used to be sold in metal containers as a grandfather myself i remember this from my youth you can use hot water compresses for the same effect there is an ointment you can get from your pharmacist it looks like the black tar but has a different name it is kept behind the counter and works wonders the black tar salve that you are talking about is called ichthammol ointment 20 walgreen pharmacy has it it works wonders