A method for the management of cancer and treatment of cancer comorbidities, including but not limited to cancer-related fatigue, cachexia, anorexia, pain, anemia, asthenia, depression, muscle weakness, nausea, vomiting, skin, and skin appendages adverse reactions； the method including the administration by the conventional and non-conventional oral, topical, parenteral routes and intra-tumoral injection, or in combination thereof, or the administration as adjuvant potentiator in other therapies using the forenamed routes, of a composition containing as active ingredient an extract of Allium species, which contains querceting, an extract of Citrus species and an extract of Pauffinia species and an extract of Theobroma species.
