Hi I currently take 2000mg slow release metformin which is due to be reviewed in 3 weeks but obviously because of the current covid situation this may be postponed. I have been doing some research on vitamin c reducing blood sugars in type 2 diabetics. I have recently started taking 500mg once a day slow release vitamin c tablets. However my research says that 500mg twice a day is best for helping blood sugars. I was unsure if the slow release vitamin c were any different to regular vitamin c or if there was any reason why I shouldn’t increase these to twice a day? Any advice gratefully received.