> well established from multiple studies, easy to google
That's not all of them. You can find systematic reviews and meta-analyses walking trough them all. Easy to google.
50-100 mg per day is OK and possible has some benefits, if you go to more than 2 grams like you suggested for health person, there is no evidence of benefits, only harms.
Phrases like "get serious" don’t contribute meaningfully to the discussion. This is a serious topic and deserves a well-informed, balanced perspective.
Recommending that people take over 2 grams of vitamin C daily -- without context or medical guidance —- is irresponsible. I'm sorry, but offering such advice in a public forum without acknowledging potential risks or the need for individual consideration can be genuinely harmful.
There are a large number of studies on this topic, in part because vitamin C supplements are so widely used and easily accessible. Several people have already shared relevant research in this thread.
Before promoting high-dose supplementation as universally safe or beneficial, I strongly recommend doing more in-depth research. It’s important to understand the potential risks especially since this kind of advice, if followed without medical oversight, can have serious health consequences.