All formulas
Head to head
Enfamil A.R. vs Similac Advance
In independent testing, Similac Advance showed lower heavy-metal levels overall (purity 88 vs 87). The full lab numbers, metal by metal:
| Purity score | 87A | 88A |
| Lead ppb | 1.5 | 2 |
| Total Arsenic ppb | 2.3 | — |
| Cadmium ppb | 2.3 | — |
| Aluminum ppb | 215 | 144 |
| Price | $1.74/oz | $0.81/oz |
| Est. cost at 28 oz/day | $7.57/day | $3.53/day |
| Origin | US | US |
| Base | Cow's milk | Cow's milk |
| Buy | Buy |
EnfamilA.R.
SimilacAdvance
Lab data: Consumer Reports independent testing, March 2025. Purity scores are relative to the tested cohort — methodology. Not medical advice; consult your pediatrician.