In all that time I have only had SIX colds, one bout of flu – a decade ago – and I will continue to use this low cost PREVENTIVE of 800 viral, fungal, bacterial and parasitical infections. It has a veritable host of pluses – including mitigating gingivitis, candida, athlete’s foot, Alzheimers, dandruff and many more. For +/-$20 a year it has saved me thousands of dollars in medical bills. NOTE: I do not do a large amount of VIt. C every day nor have I for all these years nor I have I taken a multi – vitamin for the last 15 years.