1. A method of treating hepatitis C virus infection, wherein the method comprises administering to a patient in need thereof an effective amount of a composition comprising quercetin as well as vitamin B, vitamin C or a folic acid compound. The method of claim 1, wherein the composition comprises vitamin B.3. The method of claim 1, wherein the composition comprises vitamin C.4. The method of claim 1, wherein the composition comprises a folic acid compound. The method of claim 4, wherein the folic acid compound is L-methyl folate. The method of claim 2, wherein the composition comprises vitamin C.7. The method of claim 6, wherein the composition comprises a folic acid compound. The method of claim 7, wherein the folic acid compound is L-methyl folate. The method of claim 2, wherein the composition comprises a folic acid compound. The method of claim 3, wherein the composition comprises a folic acid compound. The method of claim 1, wherein the composition further comprises one or more of the following components: genistein, genistin, curcumin, resveratrol, luteolin, epigallocatechin gallate (EGCG), coenzyme Q10, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) .12. The method of claim 11, wherein the composition comprises luteolin or epigallocatechin gallate (EGCG). The method of claim 1, comprising co-administering the composition and an antiviral drug. The method of claim 13, wherein the antiviral drug is pegylated interferon alfa, ribavirin, boceprivir or telaprevir. A method for treating disorders associated with an increase in heat shock proteins, where the method comprises administering to a patient in need thereof an effective amount of a composition that contains quercetin and one or more of vitamin B, vitamin1. Способ лечения вирусной инфекции гепатита C, где способ включает введение нуждающемуся в этом пациенту эффективного количества композиции, содержащей кверцетин, а также витамин B, витамин C или соединение фолиевой кислоты.2. Способ по п. 1, г