Vitamin B-12 500 mcg
Vitamin B-12 500 mcg and 3 near-identical products are sold under 4 different brand names — a near-twin Formula Twins cluster.
| Product | Brand |
|---|---|
| Vitamin B-12 500 mcg | GNC |
| B-12 1000 mcg | Foster Regal |
| Vitamin B-12 1000 mcg | DC |
| B-12 1000 mcg | Wonder Laboratories |
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