Whoever, by himself or his agents, knowingly adulterates or causes to be adulterated any article of food or drug, or knowingly manufactures for sale, offers for sale, or sells, within this state, any article of food or drug which is adulterated within the meaning of this article, without making the same known to the buyer, shall be guilty of a misdemeanor, and, upon conviction thereof, shall be fined not exceeding $500, or confined in jail not more than one year, or both, in the discretion of the court; and in addition to the penalties hereinbefore provided, he shall be adjudged to pay the cost and expense of analyzing such adulterated food or drug, as set forth in the certificate of the person making the analysis, not exceeding $25 in any one case, which shall be included in the costs of such prosecution and taxed in favor of the state department of health or the West Virginia Board of Pharmacy, as the case may be; and if he be a registered pharmacist or assistant pharmacist, his name shall be stricken from the register. The adulterated article shall be forfeited and destroyed.