The chemical is poorly soluble, and has only very limited penetration through intact skin. However, contact with body fluids produces free<unk>  which can then be systemically absorbed and distributed; it undergoes glucuronidation in the liver and is also excreted unaltered in urine. Only when applied to large-area (especially second- and third-degree) burns or other lesions is absorption into the body a problem.
Silver sulfadiazine
Elixir sulfanilamide
Pyrantel
Tuberculinic acid
Miproxifene phosphate
Dimetacrine
Diloxanide
Nitazoxanide