- Spirulina (1 tsp): 5 mg
- Soybeans (1/2 cup): 4.4 mg
- Pumpkin seeds (1 ounce): 4.2 mg
- Quinoa (4 ounces): 4 mg
- Blackstrap molasses (1 tbsp): 4 mg
- Tomato paste (4 ounces): 3.9 mg
- White beans (1/2 cup) 3.9 mg
- Blackstrap molasses (1 Tbsp): 3.5 mg
- Spinach (1/2 cup): 3.2 mg
- Dried peaches (6 halves): 3.1 mg
- Prune juice (8 ounces): 3 mg
- Lentils (4 ounces): 3 mg
- Swiss Chard
- Lima Beans
