Carlson Chew-Iron 27 mg Natural Grape Flavor

Our assessment

The evidence shows that this product provides 27 mg of iron per serving. Iron is a mineral that supports red blood cell formation and oxygen transport. Data not available on the specific form of iron used in this product.

How it works

Think of iron as a critical component of hemoglobin, the protein in red blood cells that carries oxygen throughout your body. Adequate iron intake helps prevent iron-deficiency anemia, which can cause fatigue and weakness [NIH ODS].

Safety profile

FDA received 592,059 total adverse event reports across all supplement products. Side effects for iron supplements can include constipation, nausea, and stomach upset. Iron supplements can reduce the absorption of certain medications, including levothyroxine and tetracycline antibiotics [NIH ODS].

Our recommendation

Start with one chewable tablet daily, taken with food to minimize stomach upset. If you are not iron deficient, do not take this supplement unless advised by your healthcare provider, as excess iron can be harmful. Data not available on the specific side effects reported for this product alone.

Supplement labels contain several key sections regulated by the FDA:

• Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
• Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
• % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
• Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
• Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.

Source: FDA Dietary Supplement Labeling Guide