Richard Schulze makes a more natural source of Vitamin C if your hesitant with synthetic Vitamin C.
I keep a box of emergen-C on hand in case I have a really bad reaction towards something. I’ll use 10-12 packets to flush out the unwanted symptom. One time I had a really bad die-off and the high dose emergen-c was a life saver. Vitamin C below 10 grams does not seem to help die-off(no flush effect). I wouldn’t rely on Vitamin C flushes for die-offs because of the possibility for mineral(copper loss) imbalances and can cause some irritation to the GI tract. Moderation with anything.
Richard Schulze Vitamin C may be a good alternative to synthetic Vitamin C. I haven’t tried Garden of life Vitamin C(cultured), but that might be a little more gentle/(better utilized?) than plain ascorbic acid.