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Head to head
ByHeart Whole Nutrition vs Similac Sensitive
In independent testing, Similac Sensitive showed lower heavy-metal levels overall (purity 66 vs 56). The full lab numbers, metal by metal:
| Purity score | 56C | 66C |
| Lead ppb | 3.5 | 3.2 |
| Cadmium ppb | 3.9 | 2.1 |
| Aluminum ppb | 1,280 | 1,053 |
| Price | $1.67/oz | $0.94/oz |
| Est. cost at 28 oz/day | $7.24/day | $4.08/day |
| Origin | US | US |
| Base | Cow's milk | Cow's milk |
| Buy | Buy |
ByHeartWhole Nutrition
SimilacSensitive
Lab data: Consumer Reports independent testing, March 2025. Purity scores are relative to the tested cohort — methodology. Not medical advice; consult your pediatrician.