Grass-Fed Beef Spleen | Nature's Iron

Nature’s Iron // Beef Spleen is the richest natural food source of heme-iron (the type of iron which is most readily absorbed by the body). Iron is a really important micronutrient as it’s vital for oxygen transportation, the production of thyroid hormone and immunity. When iron levels are optimal, people tend to report increased energy and overall resilience, whereas when they’re low this is associated with fatigue, irritability, weakness and depression.


When looking to support your bodies iron stores, it’s much more beneficial to get heme-iron from animal foods like spleen, as opposed to non-heme iron from plant foods as it’s much more absorbable (please see diagram in image gallery to the left for details). Also, when you get iron from natural food sources, as opposed to unnatural food sources (fortified foods) or synthetic iron supplements, this means the iron comes paired with other nutrients within the food that aid it’s role within the body. For example, spleen naturally contains copper, which prevents iron overload. That’s also why we decided to include Beef Liver in this blend as it’s not only also a great source of heme-iron but it’s one of the best sources of copper too, as well as being loaded with a whole host of other beneficial micronutrients.


All our organs are sourced from regenerative farms where the cattle are grass-fed and free to roam outdoors. We gently freeze dry the organs raw to maintain as many of the fragile nutrients and enzymes within them. Each jar contains 180, 500mg capsules (30 day supply). 

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Standard International is 10 days tracked when orders are made before 8:58pm.

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£15.00 for Rest of World (Tracked)

*For international deliveries within Europe (excluding Norway, Switzerland and Turkey) we pay your customs tax / duties for you. This does not apply for the rest of the world.

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best natural sources of iron
best natural sources of iron

Beef Spleen is the richest source of the most absorbable form of iron: heme-iron. Beef Liver is also an amazing source of heme-iron, whilst containing a wide variety of other beneficial nutrients like Vitamin A, Copper, Vitamin B12 and Choline. 

Increased Energy & General Wellbeing
Increased Energy & General Wellbeing

Iron plays a crucial role within the body by producing haemoglobin, a protein in red blood cells that carries oxygen. If you tend to experience fatigue, irritability, breathlessness, aches and pains, weakness, heart palpitations, a sore tongue or general tiredness, this could be down to low iron levels, which are common especially among women of reproductive age, and pregnant women. 

Enhanced Immunity & Thyroid Function
Enhanced Immunity & Thyroid Function

Iron plays a vital role in the immune system with the likelihood of infection and serious illness increases the longer iron levels are low. It’s also used to create thyroid hormone and therefore can support underactive (hypo) thyroid. 

GRASS-FED & REGENERATIVELY FARMED
GRASS-FED & REGENERATIVELY FARMED

All our organs come from a regenerative farm where the cattle roam freely outdoors consuming a natural diet of grass. This means our cattle graze outside for as much of the year as weather conditions allow. Also, they are completely antibiotic/hormone free and their diet contains no foods contaminated with fertilisers, pesticides or other artificial chemicals. 

About the product

Grass-Fed Beef Spleen | Nature's Iron

Iron plays a crucial role within the body by producing haemoglobin, a protein in red blood cells that carries oxygen. When the body is low on haemoglobin, the movement of oxygen throughout the body is impaired and people tend to experience fatigue, irritability, breathlessness, aches and pains, weakness, depression or general tiredness. In extreme cases this is diagnosed as anaemia. This can be counteracted by increasing iron stores, which when optimal, result in people feeling energetic, emotionally balanced, strong and having a general sense of wellbeing. Iron is also required to make thyroid hormone so not getting enough can lead to hypothyroidism (underachieve thyroid), which is also associated with fatigue, weakness and depression as well as hair loss and weight gain.

Due to this, there are lots of synthetic iron supplements on the market. However, many of these come in forms that are really poorly absorbed by the body or due to not containing copper, can cause iron overload (more on this below). On the other hand, getting iron from whole food sources is a much safer, gentler and more effective (if you choose the right foods) way to sustainably support iron levels.

When it comes to effectively increasing iron within the body, it’s much better to get heme-iron from animal foods as opposed to non-heme iron from plant foods as the absorption rate is 15-40% as opposed to 2-13%. Please see the image gallery above for an example.

That’s why we created this product ’Nature’s Iron’, containing two of the best food sources of heme-iron; grass-fed beef spleen (70%) and liver (30%). Beef Spleen is the best natural food source of iron with 100 grams containing 44.6mg’s (285% of the daily value [DV]). Beef Liver contains 4.9mg’s (27% of the DV) per 100g’s and although this is a lot lower than spleen, it’s still one of the top food sources available.

These ancestral superfoods also naturally contain a wide array of other powerful nutrients such as folate, B12 (essential for optimal energy levels), vitamin A, zinc, copper, choline, phosphorus, niacin, and even vitamin C, which we know helps support iron absorption even further.

Of all these nutrients, copper in-particular plays a very aligned role with iron in the body. Copper is required to liberate iron from liver stores to enable it to create red blood cells. On the other hand, if we don’t have enough copper, this can lead to iron overload in the liver, which causes inflammation. However, as nature knows best, beef spleen is also high in copper, with 100 grams containing 0.17mg (19% of the DV). This is also one of the reasons we included beef liver in this blend, as it’s an amazing natural food sources of copper with 100 grams containing 9.76mg (1084% of the DV).

Iron also plays an important role in the immune system, as it’s used to fight harmful bacteria, so when iron stores are low, chances of infection and illness increase.

  • How to use

    How to use

    Consume 1-6 capsules per day (500-3000mg). See our infographic above to work out the best serving size for you. 

  • When to use

    When to use

    Take 1-6 capsules per day, ideally in the morning to flood your body with micronutrients for the day ahead. Each jar contains 180 capsules and each capsule is 500mg. 

    Ingredients: Grass-Fed Beef Spleen (70%), Grass-Fed Beef Liver (30%), Bovine Gelatine (Capsule). 

    *All our organs are sourced from regenerative farms where the cattle are grass-fed and free to roam on grassland.

FAQs Questions

WHAT’S THE DIFFERENCE BETWEEN YOUR BEEF ORGANS AND OTHER ORGAN MEAT PRODUCTS ON THE MARKET?

Our organs come from grass-fed and regenerative farms where the cattle are free to roam outdoors for as much of the year as weather conditions allow. Giving cows access to their natural diet in this way, results in their meat being more nutrient dense. In addition to this, they're farmed in a way that has the highest standards for animal wellfare, whislt creating positive impacts on the ecosystem around them. For example, this style of farming sequesters more carbon than it gives off whilst promoting wildlife biodiversity.

HOW DO YOU ENSURE ALL THE BENEFICIAL NUTRIENTS ARE MAINTAINED THROUGH PROCESSING?

We gently freeze dry the organs raw to maintain as many of the fragile nutrients and enzymes found within them.

HOW MUCH RAW ORGANS DOES IT TAKE TO MAKE ONE SERVING SIZE OF SIX CAPSULES?

It takes roughly 15 grams of raw organs to create 6 capsules. Weston A Price and other leading nutritions in this field like Chris Masterjohn recommend consuming 170-225g of beef liver per week. Taking 6 capsules per day will cover roughly 105 grams of this split out on a daily basis to ensure the key micronutrients they provide are continuously circulating in your system. If you want to really optimise nutrient intake from organs, we recommend either stacking two of our organ meat products together or consming an additional portion of organ meat (around 65-120g) on top of this per week.

HOW LARGE ARE THE CAPSULES / CAN THEY BE BROKEN AND SPRINKLED INTO FOOD?

The capsules are a medium size and we haven’t come across anyone so far that’s said they’re too big to swallow. However, if you would prefer to open them and add them to bone broth or other dishes this is absolutely fine.