“A diet to boost immunity must not consist of vitamins alone, but also dietary fibre, minerals, protein, antioxidants, and sufficient water for hydration, ” she said. Malaysian Pharmacists Society president Amrahi Buang said although taking vitamins was helpful, supplements alone was not sufficient to boost one’s immune system. “Vitamin C as a supplement is generally accepted but people should not take such a high dose. Dr Hoe said a high dose of vitamin C had its own complications and should only be given under strict medical supervision. As for vitamin C, it states that there was also insufficient data in its use for the treatment of Covid-19 patients.