This invention is related to compounds and use of N-Acyl-N'-benzyl-alkylendiamino derivatives of the following general formula (I), wherein A is a straight or branched C 2-C8 alkyl chain; X is a methylene, oxygen, sulphur or a NR7 group; R1is a straight or branched C1-C8 alkyl or C3-C8 alkenylene or C3-C8alkynylene chain, optionally substituted with CF3, phenyl, phenoxy or naphthyl, the aromatic rings optionally substituted by one or more C1-C4 alkyl, halogens, trifluoromethyl, hydroxy or C1-C4 alkoxy groups; R2, R3 are independently hydrogen, a C1 -C3 alkyl chain, halogen, trifluoromethyl, hydroxy or C1 -C4 alkoxy groups; R4, R5 are independently hydrogen or C1-C6alkyl; R6 is a hydrogen or a straight or branched C1-C8 alkyl or linked to R 5 can form a five to seven membered lactam; R7is hydrogen or C1-C6 alkyl; and the pharmaceutically acceptable salts thereof that are active as sodium and/or calcium channel modulators and therefore useful in preventing, alleviating and curing a wide range of pathologies, including, but not limited to, neurological, psychiatric, cardiovascular, inflammatory, ophthalmic, urologic, metabolic and gastrointestinal diseases, where the above mechanisms have been described as playing a pathological role.