The present invention relates to a method for the preparation of a solution of immunoglobulins based on an initial solution of immunoglobulins with a purity greater than or equal to 96% in the presence of a polyether or polymer of glycol, characterised in that it comprises the steps of: a) adding caprylic acid or salts of the same to the initial solution； b) adjusting the pH of the solution obtained in step a)； c) incubating the solution obtained in step b) for the time and at a temperature necessary for the inactivation of enveloped viruses； d) performing a step of ultrafiltration/diafiltration on the solution obtained in step c).
