Placeholder. Care/of's biggest apparent innovation wasn't a new vitamin formula at all — it was publishing a graded 'level of evidence' rating and research citation next to every single recommended ingredient, radically different from the vague health claims used by almost the entire rest of the category.
What we've found so far: Care/of (now Bayer-owned) attaches a specific evidence-level rating and citation to every recommended ingredient in its personalized packs, independently praised by a functional-medicine physician reviewer as 'refreshingly transparent.'
Open research: Get Care/of's actual evidence-grading rubric/methodology directly; test a few of their evidence-level claims against the primary literature to spot-check accuracy.