Is Peanut Butter High in Iron?

FAQ #14 Chelon

Peanut butter contains iron, but it is not considered a high-iron food. A typical serving provides a modest amount, and the iron it contains is of a type that is not easily absorbed by the body.

How Much Iron Is Actually in Peanut Butter?

The iron content varies slightly between brands and types, but here are the typical values based on standard servings:

Serving Size	Approximate Iron Content	% Daily Value*
1 tablespoon (16 g)	0.3 mg	~2%
2 tablespoons (32 g) — a standard sandwich serving	0.7–1.0 mg	~4–6%
100 grams (about ½ cup)	1.7–2.0 mg	~10–12%
* Based on a daily value of 18 mg for adults.

For context, the recommended daily intake of iron is 18 mg for adult women and 8 mg for adult men. You would need to eat over 18 tablespoons (more than a full cup) of peanut butter to meet a woman's daily iron requirement — along with over 1,500 calories.

The Catch: It's "Non-Heme" Iron

The iron in peanut butter is non-heme iron, which comes from plant sources. Unlike the heme iron found in meat, poultry, and fish, non-heme iron is not as well absorbed by the body. This means even the modest amount listed on the nutrition label is not fully available to you.

Why Absorption Is Further Reduced: Phytates

Peanuts are legumes, and like many plant foods, they contain phytic acid (phytates). Phytates are compounds that bind to minerals like iron, zinc, and calcium in your digestive tract, significantly inhibiting their absorption. Some studies have shown that phytates can reduce non-heme iron absorption by 80–90%.

The bottom line for your diet:

Is it a good source of iron? No. The amount is low, and the absorption is poor.
Can it help with anaemia? Not significantly. Rely on red meat, poultry, fish, fortified cereals, spinach, or legumes like lentils for better iron sources.
Should I stop eating it? No. Peanut butter is still a healthy food — rich in protein, healthy fats, magnesium, and vitamin E. Just don't count on it for your iron needs.

Pro tip for better absorption: If you do eat peanut butter alongside other plant-based iron sources, pair it with vitamin C–rich foods (like a glass of orange juice, strawberries, or bell peppers). Vitamin C can help enhance the absorption of non-heme iron, partially offsetting the inhibiting effect of phytates.

This is also why diet alone is often not enough to correct an established iron deficiency. A supplement like Chelon (ferrous bisglycinate equivalent to 30 mg elemental iron, paired with vitamin C for absorption) delivers in one dose what would take an impractical amount of food like peanut butter to match — in a chelated form that phytates cannot easily bind.

References & Further Reading

Click the links above to read the original research abstracts and nutritional data.

Disclaimer: This information is for educational purposes only and does not constitute medical advice. Always consult your healthcare provider regarding your specific health condition, especially if you are managing anaemia or other nutritional deficiencies.