There might be a lower, optimal daily intake of Vitamin C for humans, potentially around 250mg, to avoid excess oxalate production.

“so I wonder if there's like a sweet spot there that that humans probably don't need a thousand milligrams of Vitamin C a day you don't need to just be hammering acerola cherries or but but maybe there's a there's a clearly if you're doing more than 400 milligrams you're going to create a lot of oxalate in the body so I would say aim for 250 a day at the upper limit to avoid excess oxalate in the body”