SO, is it from horses or cows, and what country are these animals in and what is the processing to get this supplement? what are the animals fed?

I do not know the answers to those very good questions. I believe the patient should ask their doctor if taking Ferritin itself will increase serum Ferritin levels. Usually, one takes an iron supplement and that will lead to an increase in Ferritin which represent your body's stores of iron. If the patient is looking for relief of RLS...Restless Legs Syndrome...43% of RLS is caused by low Ferritin levels in the brain. Dr. Holder

I wouldn't think so being from bovine spleen

What is the difference between cr bioavailable ferritin and just cr ferritin?

In the small print it says bioavailable iron. I have low ferritin. I took this for one month. It did not raise my ferritin level. I am relatively certain it would be a good iron supplement. And you need iron for your body to make ferritin. Not so sure your body can absorb ferritin orally and not so sure this product contains Ferritin even though that is the name just like Half&Half is not 50/50 cream and milk. I believe this is an iron supplement.

Is stated in the product description on website: is a 5 mg iron supplement naturally isolated from bovine spleen. This scientifically-designed formula is free of corn, soy, yeast and wheat.

Cardiovascular Research Ecological Formulas Ferritin Bioavailable Iron 5 Mg 60

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Description

🩸 Elevate your iron game—stay energized, focused, and ahead of the curve!

CLINICALLY RELEVANT - Supports healthy hemoglobin levels and oxygen transport for sustained energy and vitality.
CLEAN PURE FORMULA - Free from soy, gluten, wheat, and corn—perfect for sensitive, health-conscious professionals.
SUSTAINED IRON SUPPORT - Delivers 5 mg of bioavailable iron per capsule to maintain optimal iron stores over time.
OPTIMIZED IRON ABSORPTION - Harnesses ferritin, the body’s natural iron storage protein, for superior uptake without GI discomfort.
TRUSTED QUALITY REPUTATION - Backed by Cardiovascular Research with 4.6-star rating and proven long-term benefits.

Cardiovascular Research Ecological Formulas Ferritin Bioavailable Iron provides 5 mg of iron per capsule in a natural ferritin form derived from bovine spleen, ensuring superior absorption and minimal side effects. This clean, allergen-free supplement supports healthy iron storage, hemoglobin function, and sustained energy, making it ideal for professionals seeking reliable, long-term iron balance.

Specifications

ASIN	B003NE4BKU
Best Sellers Rank	#35,417 in Health ( See Top 100 in Health ) #822 in Mineral Supplements
Brand	Cardiovascular Research
Brand Name	Cardiovascular Research
Customer Reviews	4.6 out of 5 stars 383 Reviews
Flavor	Unflavored
Flavour	Unflavored
Item Form	Capsule
Item Weight	0.01 Ounces
Item form	Capsule
Manufacturer	Ecological Formulas/Cardiovascular Research
Manufacturer Part Number	EC0100
Material Type Free	soy free,wheat free,corn free,gluten free
Model Number	EC0100
Number of Items	1
Primary Supplement Type	Iron
Primary supplement type	Iron
Product Benefits	Iron Support
Product benefits	Iron Support
UPC	087614992310
Unit Count	60 Count
Unit count	60 Count

Reviews

J**R

Does exactly what it's supposed to do

This supplement is very effective in building and maintaining iron stores. It's not dramatic, so it doesn't give this - WOW i'm doing amazing, but you see the increase if you keep up with the blood work. Will be buying for the foreesable future. If you're looking for long term iron storage, this is the supplement that will help for this.

26.01.2026

N**S

Muy buenas

Las compré para evitar la caída de cabello y considero que si me han funcionado pero además se me quitó el cansancio

7.09.2025

L**C

Best iron related supplement I have found

No nasty iron taste after taking. Easiest on my stomach.

12.10.2025

G**O

Worth it for me

This was very helpful for my hair growth

30.10.2025

K**N

Quality product for iron.

This product actually is easy on my stomach and helps with my low iron levels. Daughter is a RN said this is the best brand on market. I highly recommend.

27.10.2024

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3 weeks ago

Neha S.

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Cardiovascular Research Ecological Formulas - Ferritin Bioavailable Iron 5 mg - 60 Caps

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