A drug production device which receives information from a processor relating to a drug combination, comprising: a plurality of drug cartridges , each configured to hold a quantity of a drug; a plurality of drug dispensers , each of said drug dispensers coupled to a respective drug cartridge ; a valve positioned in each dispenser configured to allow drug from a respective cartridge to be dispersed when the valve is opened; a conveyor configured to convey a drug carrier in the form of an gelatin capsule through the device beneath the dispenser for the first drug , where a predicted or desired dosage of the first drug is dispensed into the carrier and then to as many dispensers as necessary depending on the predicted or desired and/or prescribed drug selection, combination and dosage, with the appropriate dosage of each drug being dispensed into the carrier from each dispenser; characterized in that the plurality of drug cartridges are each configured to hold a quantity of a drug in the form of substantially equally sized microtablets containing a known dosage of the drug; and wherein said drug production device also includes a controller , wherein said drug production device also includes a meter for measuring an amount of drug passing through each dispenser , wherein the meter comprises an optical particle counter by means of which, it counts the number of substantially equally sized units of a known quantity of a drug as the substantially equally sized units of microtablets pass through the valve and into the gelatin capsule ; a capsule sealer for sealing the open capsules ; and a verification stage , for verifying that the gelatin capsules contain a correct dosage and combination of drugs, wherein a combination drug product in the gelatin capsule is produced from the dispensed drugs. a plurality of drug cartridges , each configured to hold a quantity of a drug; a plurality of drug dispensers , each of said drug dispensers coupled to a respective drug cartridge ; a valve positioned in each dispenser configured to allow drug from a respective cartridge to be dispersed when the valve is opened; a conveyor configured to convey a drug carrier in the form of an gelatin capsule through the device beneath the dispenser for the first drug , where a predicted or desired dosage of the first drug is dispensed into the carrier and then to as many dispensers as necessary depending on the predicted or desired and/or prescribed drug selection, combination and dosage, with the appropriate dosage of each drug being dispensed into the carrier from each dispenser; characterized in that the plurality of drug cartridges are each configured to hold a quantity of a drug in the form of substantially equally sized microtablets containing a known dosage of the drug; and wherein said drug production device also includes a controller , wherein said drug production device also includes a meter for measuring an amount of drug passing through each dispenser , wherein the meter comprises an optical particle counter by means of which, it counts the number of substantially equally sized units of a known quantity of a drug as the substantially equally sized units of microtablets pass through the valve and into the gelatin capsule ; a capsule sealer for sealing the open capsules ; and a verification stage , for verifying that the gelatin capsules contain a correct dosage and combination of drugs, wherein a combination drug product in the gelatin capsule is produced from the dispensed drugs. <EOS>