The invention relates to a marked solid pharmaceutical form comprising a continuous groove on its surface, said groove having a depth of 10 μm to 100 μm, and preferably a width of 5 μm to 120 μm.The invention also relates to a method for marking such a pharmaceutical form by the formation of at least one groove by ablation of the surface of the solid form by means of a laser ray, said method being such that the laser ablation is performed with a laser energy of 0.1 to 500 mJ/mm2.本發明係關於一種經標記之固體醫藥形式,其包括在其表面上之連續凹槽,該凹槽之深度為10 μm至100 μm,且較佳寬度為5 μm至120 μm。本發明亦係關於一種藉由以下方式標記此醫藥形式之方法:藉由藉助雷射射線燒蝕該固體形式之表面來形成至少一個凹槽,該方法係採用0.1 mJ/mm2至500 mJ/mm2之雷射能量進行該雷射燒蝕。2...雷射射線源3...λ/2板/半波板4...偏光立方體5...λ/4板/四分之一波板6...鏡7...鏡8...雷射聚焦部分9...光學系統L...雷射射線L...雷射射線