The intrinsic viscosity [] of dendronized linear macromolecules dissolved in thermodynamically good solvents depends both on chain length that is contour length Lc of the backbone of the polymer and on the persistence length lp. Investigating a set of samples of identical Lc but differing in the generation number for which data on lp are available, it becomes possible to establish a generalized viscosity law in the form [] = K(M/Mp) in which Mp denotes the molar mass of the objects per lp, M is the total molar mass, K is a constant, and is the Mark-Howink exponent, which is found to be 0.55.