Single Medox 80mg anthocyanin capsule contains: A purified extract from Bilberries and Black currants containing minimum 80 mg anthocyanincitrates; 110mg-170mg maltodextrin for stabilisation, Capsule - VCaps, HPMC, size 1, 7mmx20mm, 77 mg, neutral taste; Total weight of capsule: 390-410 mg. Dosage administered orally is: 320 mg/day (4 capsules - recommended dosage) for 28 days. Adherence to intervention will be measured by tablet return after 4 week supplementation. The wash out period is for tw