Carotenoids from Tagetes erecta
Two carotenoids that concentrate in the macula. Among the few eye-health ingredients with long-term outcome data rather than surrogate markers.
per day of lutein and zeaxanthin respectively — the AREDS2 ratio, taken with a fat-containing meal.
Harmless skin yellowing at very high intakes is the only common report.
Existing retinal disease under specialist care, or smoking with beta-carotene in the same formula.
Open any one for sample size, funding and what it actually measured.