capsules for the oral administration of one or more medicinal and/or nutritional active principles (AP) and each providing a sustained and a controlled release of the AP in the small intestine, where the active principle can be an antiulcer, antidiabetic, anticoagulant, antithrombic, hypolipaemic, antiarrhythmic, vasodilatory, antianginal, antihypertensive and vasoprotective agents, fertility enhancers, labor inducers and inhibitors, and contraceptive, antibiotic, antifungal, antiviral, anticancer, anti-inflammatory, analgesic, antiepileptic, antiparkinsonian, neuroleptic, hypnotic, anxiolytic, psychostimulatory, antimigrine, antidepressant, antitussive, antihistamine or anti-allergic agents, such as but not limited to acetylsalicylic acid, pentoxifyllin, prazosin, acyclovir, nifedipin, diltiazem, naproxen, ibuprofen, flurbiprofen, ketoprofen, fenoprofen, indomethacin, diclofenac, fentiazac, oestradiol valerate, metoprolol, sulpiride, captopril, cimetidin, zidovudin, nicardipin, terfanadin, atenolol, salbutamol, carbamazepin, ranitidin, enalapril, simvastatin, fluoxetin, alprazolam, famotidin, ganciclovir, famiciclovir, spironolacton, 5-ASA, quinidin, perindopril, morphin, pentazocin, paracetamol, omeprazol, metoclopramid and mixtures thereof, and where the active principle can also be medicinal-nutritional and/or dietary supplements of mixtures thereof, such as but not limited to vitamins, amino acids, antioxidants, trace elements or mixtures thereof

medical and product research services notably in the field of capsules containing a chemical, medicinal, nutritional, phytosanitary, and/or cosmetic composition