Start with the gap: no warnings panel was supplied for this product.
No caution line, no interaction note, no pregnancy statement. That is a missing document
rather than a clean bill of health, and it means everything below comes from the federal
pages covering each ingredient rather than from the bottle.
The two rows that move when you follow the directions
Double the panel and two rows cross a line worth knowing about. Niacin is 20 mg NE a capsule, so 40 mg NE at the directed two — and the NIH Office of Dietary Supplements sets an adult upper limit of 35 mg. Zinc is 16 mg a capsule, so 32 mg at two, against an upper limit of 40 mg from all sources combined — food and every other supplement included. Neither figure is dangerous on its face, and ODS sets upper limits with a margin in them. But one of them is over, the other is close, and a buyer taking a multivitamin as well should be doing this arithmetic before the first bottle rather than after the third.
ODS is specific about what the zinc limit counts: “The daily upper limits for zinc include intakes from all sources - foods, beverages, supplements, and medications.”
So a multivitamin, a zinc lozenge in winter and a fortified breakfast cereal all go into
the same total. And on what too much looks like: “Signs of too much zinc include nausea, dizziness, headaches, upset stomach, vomiting, and loss of appetite.”
The beta-carotene conversation
One safety note that belongs on the front of every eye supplement and is on almost none of them. AREDS2 removed beta-carotene from the original AREDS formula, because, in NEI’s words, “AREDS2 participants who were former smokers who took a formulation with beta-carotene had a higher incidence of lung cancer”, and its guidance is that current and former smokers should avoid the beta-carotene formula. This product’s vitamin A is beta-carotene. The amount is small — 50 mcg RAE a capsule, 5% of a day’s value — and the studies behind that warning used high-dose supplements. If you smoke or used to, this is the row to raise with a clinician before you start.
What else is worth raising
The blend contains quercetin, rutin and grape seed extract, all three of which are
worth a pharmacist’s attention alongside prescription medicine. Bilberry fruit is
considered safe by NCCIH in food amounts, and this panel specifies fruit rather than leaf,
which is the part that carries the caution. Adults 18 and over only.
The side effects page goes through each row in
turn.