these polymers used to obtain the control of the release of active principle by the release module is that commonly described in the literature and varies preferably between 20 and 60 weight weight referred to the total composition of the matrix which may also comprise excipients generally considered safe as well as the active principle which may be any one of the active principles contemplated by the pharmacopoeia for oral administration with respect to the total composition the contribution of the active principle varies preferably between 80 and 0 0001 weight weight the inventors of the present patent application have found that the assembly of the release modules making up the finished system u201c assembly u201d can be easily obtained including in the release module a polymer with strong adhesive properties such as sodium carboxymethylcellulose carboxypolymethylene hydroxypropylcellulose hydroxypropylmethylcellulose methylcellulose polymethacrylate or others in this way the release system can be obtained by inserting the release modules in a hard gelatine capsule in the sequence concave face against convex face so that they are in close contact with each other in forming the assembly when the gelatine capsule is immersed in the gastric fluid at 37 u00b0 c the gelatine component softens and dissolves creating around the pile of modules inserted in the capsule a layer.