Abstract: A pharmaceutical composition comprising a mixture of: (c) an active macromolecular principle; (d) an aromatic alcohol absorption enhancer chosen from propyl gallate, butylated hydroxy toluene (BHT), butylated hydroxy anisole (BHA) and analogs and derivatives thereof, or mixtures thereof; and (d) a biguanide or a pharmaceutically acceptable salt thereof, capable of increasing the solubility of the aromatic alcohol absorption enhancer in an aqueous medium, wherein the aromatic alcohol absorption enhancer is present in an amount by weight greater than or equal to that of the active principle.

Abstract: The invention provides a pharmaceutical composition comprising a mixture of: (a) an active macromolecular principle; and (b) a non-conjugated bile acid or salt; and (c) an additive chosen from propyl gallate, butyl hydroxy anisole (BHA) and analogues and derivatives thereof, or mixtures thereof.

Abstract: The invention provides a pharmaceutical composition comprising a mixture of (a) an active macromolecular principle, and (b) an aromatic alcohol absorption enhancer chosen from butylated hydroxy toluene, butylated hydroxy anisole and analogues and derivatives thereof, wherein the aromatic alcohol absorption enhancer is present in an amount by weight greater than or equal to that of the active macromolecular principle, and further comprises a pharmaceutical composition comprising a mixture of (a) an active macromolecular principle, (b) an aromatic alcohol absorption enhancer chosen from propyl gallate, butylated hydroxy toluene, butylated hydroxy anisole and analogues and derivatives thereof, wherein the aromatic alcohol absorption enhancer is present in an amount by weight greater than or equal to that of the active macromolecular principle, and (c) a solubilisation aid capable of increasing the solubility of the aromatic alcohol absorption enhancer in aqueous media.

Abstract: The invention relates to the use of hydrophilic aromatic alcohols to enhance the uptake of molecules, including biologically active macromolecules, into the body across the intestinal wall from the lumen of the gut; to compositions for oral administration which consists of an enteric capsule capable of withstanding transit through the stomach, containing a mixture comprising: (a) an active principal, and (b) a hydrophilic aromatic alcohol absorption enhancer; and to the user of the composition in medical treatment and diagnosis.