Optimal Vitamin B
Optimal Vitamin B and 2 near-identical products are sold under 2 different brand names — a near-twin Formula Twins cluster.
| Product | Brand |
|---|---|
| Optimal Vitamin B | Longevity Medical Clinic |
| Super Stress B-Complex with Vitamin C | Swanson |
| Super Stress B-Complex with Vitamin C | Swanson |
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