Maturation device for curing seamless dosage forms, comprising: - an external drum with an upstream inlet for entrance of a fluid containing uncured dosage forms, and a downstream discharge outlet for discharging cured dosage forms; - a first internal body inside the drum, defining: - - at least one maturation chamber extending in the body between - - an upstream chamber inlet, in fluid communication with the inlet for uncured dosage forms in an open condition of the upstream chamber inlet, and - - a chamber downstream outlet, for establishing a fluid passage towards downstream and the downstream discharge outlet, in an open condition of the chamber downstream outlet; - a first separation element arranged between the first internal body and the downstream discharge outlet for discharging cured dosage forms, and comprising: - - a solid region for closing a downstream outlet of a chamber of the first internal body, and - - a passing-through region, able, in the chamber downstream outlet open condition, to open the chamber downstream outlet in order to allow passage of fluid towards downstream and the discharge outlet of the maturation device; Wherein at least the first internal body is rotatable around an own axis to determine the closing/opening condition of the downstream outlet of a maturation chamber of the first internal body, and wherein the device is configured so that, when the downstream outlet of a maturation chamber of the first internal body is in the open condition to allow downstream flow of the fluid containing dosage forms, the upstream inlet of the maturation chamber is not in fluid communication with the inlet of the drum, and when the upstream inlet of a maturation chamber of the first internal body is in fluid communication with the upstream inlet of the drum for entrance of the fluid containing uncured dosage forms in the maturation device, the downstream outlet of the chamber is in the closed condition. - an external drum with an upstream inlet for entrance of a fluid containing uncured dosage forms, and a downstream discharge outlet for discharging cured dosage forms; - a first internal body inside the drum, defining: - - at least one maturation chamber extending in the body between - - an upstream chamber inlet, in fluid communication with the inlet for uncured dosage forms in an open condition of the upstream chamber inlet, and - - a chamber downstream outlet, for establishing a fluid passage towards downstream and the downstream discharge outlet, in an open condition of the chamber downstream outlet; - a first separation element arranged between the first internal body and the downstream discharge outlet for discharging cured dosage forms, and comprising: - - at least one maturation chamber extending in the body between - - an upstream chamber inlet, in fluid communication with the inlet for uncured dosage forms in an open condition of the upstream chamber inlet, and - - a chamber downstream outlet, for establishing a fluid passage towards downstream and the downstream discharge outlet, in an open condition of the chamber downstream outlet; - a first separation element arranged between the first internal body and the downstream discharge outlet for discharging cured dosage forms, and comprising: - - a solid region for closing a downstream outlet of a chamber of the first internal body, and - - a passing-through region, able, in the chamber downstream outlet open condition, to open the chamber downstream outlet in order to allow passage of fluid towards downstream and the discharge outlet of the maturation device; Wherein at least the first internal body is rotatable around an own axis to determine the closing/opening condition of the downstream outlet of a maturation chamber of the first internal body, and wherein the device is configured so that, when the downstream outlet of a maturation chamber of the first internal body is in the open condition to allow downstream flow of the fluid containing dosage forms, the upstream inlet of the maturation chamber is not in fluid communication with the inlet of the drum, and when the upstream inlet of a maturation chamber of the first internal body is in fluid communication with the upstream inlet of the drum for entrance of the fluid containing uncured dosage forms in the maturation device, the downstream outlet of the chamber is in the closed condition. Wherein at least the first internal body is rotatable around an own axis to determine the closing/opening condition of the downstream outlet of a maturation chamber of the first internal body, and wherein the device is configured so that, when the downstream outlet of a maturation chamber of the first internal body is in the open condition to allow downstream flow of the fluid containing dosage forms, the upstream inlet of the maturation chamber is not in fluid communication with the inlet of the drum, and when the upstream inlet of a maturation chamber of the first internal body is in fluid communication with the upstream inlet of the drum for entrance of the fluid containing uncured dosage forms in the maturation device, the downstream outlet of the chamber is in the closed condition.