In 2008 - 2009 I used Corvalen along with multiple supplements and prescriptions such as anti-virals, antibiotics, pain killers, duragesics, sleep meds, multiple supplement combinations as prescribed etc. I had an excel spreadsheet full of scripts and another one full of supps as I adhered to the protocol via one of his clinics. I also went monthly for a full day of infusions and shots for almost 1 1/2 yrs.
I had about 60% improvement within 4-6 months, then a considerable relapse/decline after that. To the point, they advised me to see a heart specialist, gastro-enterologist, sleep specialist, pain specialist, etc.
In other words, although I spent a fortune, used all the advised supplements and prescriptions (to take care of latent viruses and any pathogens).... and I still relapsed.... There were several patients in the clinic who seemed to have improved considerably. But I noticed that they all seemed to do well for about 4 - 6 months. I never seemed to find anyone who stayed as long as I did. It could have been the cost as the following year (2010), the cost went to $10,000 for a year's commitment. (And my money was all gone by then.)
I still receive their newsletter and do believe that some of the items they sell may be of quite good benefit. I can only relate personal experience. The supps usually cost me around $300/month.That did not include the scripts, the Dr's appts or the infusions.