Minimums and maximums
Excess matters as much as deficiency. In 2018–19, formulation errors led to US dog food recalls with vitamin D at up to about 70 times the intended level.
Every formula is checked against FEDIAF nutritional maximums and EU/UK legal additive limits (e.g. vitamin D 2,000 IU/kg, zinc 200 mg/kg), and premix inclusion is double-checked.
- GuidanceFDA vitamin D alert
- GuidanceFEDIAF 2025