Rheological measurements on aqueous solutions containing a constant concentration of cetyltrimethylammonium bromide and increasing the concentration of counter ion additive, M2X, where X (2-) represents 4-methoxysalicylate (4-MeOSa(2-)) and 3-, 4-methylsalicylate (3-, 4-MeSa(2-)), exhibit the presence of (i) spherical (SM), wormlike (WM) and branched (BWM) micelles for X (2-) = 4-MeOSa(2-) and (ii) spherical, wormlike, branched micelles, small vesicles (SVs)/planar bilayer sheets (PBLS) and multilamellar vesicles (MLV) for X (2-) = 3-, 4-MeSa(2-). Zero shear viscosities measured with respect to M2X showed first and second maxima which were used to calculate flow activation energies (E (a)) at various M2X.