Deficiency

Desiccated Beef Liver

Freeze-dried beef liver rich in heme iron, vitamin A, and B12, used primarily to address micronutrient gaps in people who avoid organ meats.

Desiccated Beef Liver

Freeze-dried beef liver rich in heme iron, vitamin A, and B12, used primarily to address micronutrient gaps in people who avoid organ meats.

score

evidence

Caution

risk

Proven Benefits

01May support iron status

02May support B12 status

03May support vitamin A status

04May support copper status

05May support riboflavin status

Chemical Forms

Recommended

Freeze-dried beef liver powder
Desiccated beef liver capsules
Non-defatted desiccated liver
Low-heat dried liver

Avoid

Defatted liver powder (lower vitamin A content)
High-heat dried liver (more loss of heat-sensitive B-vitamins)
Unspecified-source liver (harder to verify contaminant testing)

Expert Note

Freeze-drying preserves more heat-sensitive B-vitamins than high-heat drying, but nutrient content still depends mainly on the source material and whether the product is defatted. Non-defatted products keep more of the liver's naturally occurring vitamin A, and unspecified sourcing makes contaminant testing harder.

Protocol

Amount

3,000-4,500 mg

Frequency

Once daily, or split into 2 doses

When

With a meal containing some fat to support absorption of fat-soluble vitamins.

Condition-Based Dosing

Confirmed iron deficiency (ferritin < 30 ng/mL)

3,000-6,000 mg/day as an adjunct; do not rely on it alone for repletion— Each serving provides only a modest amount of iron; standard iron therapy is usually needed.

General micronutrient support, no known deficiency

1,500-3,000 mg/day— Track total vitamin A intake from all supplements and organ meats.

Safety & Limits

Upper Safe Limit

No established UL for desiccated liver itself; keep total preformed vitamin A under 3,000 mcg RAE/day (IOM UL for adults) from all sources.

Cycling

Safe for continuous use

Contraindications

Pregnancy or trying to conceive — high preformed vitamin A can cause birth defects

Hemochromatosis or other iron-overload disorders — heme iron is highly bioavailable

Wilson's disease or copper toxicity — liver is rich in copper

Prescription retinoids (isotretinoin, acitretin) — additive vitamin A toxicity risk

Pernicious anemia or severe B12 malabsorption — food-bound B12 may not be absorbed reliably

Synergies

Vitamin C

Vitamin C can help non-heme iron absorption and overall iron status, but the effect is modest because liver iron is mostly heme.

Avoid Combining With

✕Calcium supplements or dairy (wait 2+ hours — competes with iron absorption)
✕Coffee or tea within 1 hour (polyphenols reduce iron absorption, especially non-heme)
✕Antacids or proton pump inhibitors like omeprazole (reduce stomach acid needed for iron and B12)
✕High-dose zinc supplements (competes with copper and iron)

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