I’ve stayed in good control with lifestyle & Berberine for years, but since my nasty Shingles bout, my numbers are WAY UP. Tried 2 months of Metformin (1000mg/2per day) , but no change. Anecdotal indicates a post Shingles rise is not uncommon, but I’d like to understand why that would be, & data is thin at best. Anyone else have this experience?