Remedium ( Latin Remedium - a remedy for something, a medicine) is a numismatic term denoting an allowable deviation from the normative mass of a coin with a set monetary stop . Also, a remedium can indicate an allowable deviation from an established sample of a coin metal. As a rule, remediium is established by law.
Remedium can occur due to dishonesty of minters, due to technical deviations during minting and due to the natural aging of coins.