Hard
Hard and 4 near-identical products are sold under 4 different brand names — a near-twin Formula Twins cluster.
| Product | Brand |
|---|---|
| Hard | Core Nutritionals |
| Sustained Focus | Nature's Way |
| Tao in a Bottle | Ron Teeguarden's Dragon Herbs |
| Sleep | Kion |
| Sustained Focus | Nature's Way |
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