Natural sources of vitamin and minerals for horses

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horse-grazingMost horse owners and trainers nowadays give vitamins and minerals to horses as part of their daily programme, writes herbalist Robert McDowell.

Since the discovery of Vitamin C and its link with the disease Scurvy was explained, we are accustomed to being told by the media and by health authorities that our health will be improved if we take additional Vitamin and Mineral supplements to our normal diets.

We are told that it is something about the modern lifestyle, stress and the denaturing of our soils, etc, which means that our food supply is not as good as it was in the “old days”. This is of course true to some extent and we should be doing much more about the quality of our food. We should really be working much harder on organic and chemical-free farming than we are doing but until the market provides a greater incentive for so doing, this movement will be slow.

As usual of course, this is not the whole truth.

Modern diets (although maybe poorer in quality than an ideal medieval diet for example) are vastly better in regard to the variety of food available. Also, although the subsistence farmer had organic food, often seasonally he suffered severe shortages, storage problems and malnutrition. Scurvy was found to occur in cities as well as on sailing ships. Even among the wealthy, poor dietary habits often caused severe health problems.

This to say nothing about medicine which often contained poisonous substances like mercury, arsenic, antimony and opium, which did nothing much for the health of the population, either.

Vitamin and mineral supplements in the last 30 years became such a lucrative market in human nutrition that it was quickly taken up by the Animal Feed and Veterinary Supply Industries. There are a wide range of such products marketed especially for horses. Some are harmless, some are detrimental to health and most have more value as a “feel good – convenience thing” for the owner, than anything else.

Let us consider some of the natural sources of Vitamins and Minerals one at a time.

Vitamin A: Is found in carrots and leafy green vegetables and is therefore much better fed as such, rather than processed supplements.

Vitamin B: Is found in all grains and the idea of giving Vitamin B supplements to animals which have grain in their diet is a complete nonsense. Vitamin B12 is a little harder to get and is best found in the herb Comfrey that can be offered (occasionally and in small quantities!) and in these doses is a valuable supplement.

Bioflavinoids: Can be supplied with a little Buckwheat to provide for Rutin especially for healthy blood vessels.

Vitamin C: Is found in fresh greens in abundance and it is a poor horse which has no access to green pick. If a horse is kept away from greens for a time a few Rosehips Tea Bags in boiling water and allowed to cool will provide all the vitamin C and iron that is missing.

Choline: Is found in bitter vegetables and the leaves of dandelions and a few fresh leaves can be offered a stabled horse from time to time. Otherwise let a few dandelions grow around the yard and the horse will chose them for itself.

Vitamin D: Is synthesized by the action of sunlight on skin and found in fish oils. Not needed as a supplement for grazing animals.

Vitamin E: Is found in fresh wheat germ along with the whole range of vitamin B’s. Wheat germ is a commercial source of both E’s and B’s. A little fresh wheat germ for those horses not on grains is all that is required. Anything more expensive or more processed is nonsense.

Calcium: Is found in dry feed, leafy greens and in molasses (along with sulfur)

Iron: Is found in wheat germ, green feed, rosehips and in molasses.

Silica: Is found in grain and dry feed in abundance.

Trace Elements: Are all found in kelp.

It all boils down to grains, green feed, wheat germ, molasses, carrots, rosehips and kelp. To this I would add garlic as a protection against infection and provide access to the odd weed like dandelion and comfrey.


Robert McDowell herbal treatments

First published on in 2004.


4 thoughts on “Natural sources of vitamin and minerals for horses

  • October 18, 2013 at 6:30 am

    If what I read on ‘Wake Up World’ is true, we are still getting our mercury and arsenic supplies via medicines, specifically vaccines…

  • November 20, 2013 at 9:04 am

    I understood that comfrey is not recommended as a reliable source of B12 for humans as it contains analogues which are either inactive or may antagonise true vitamin B12. In light of this I was wondering what information we have on comfrey as a reliable source of B12 for horses. Do they utilise comfrey in a different way to humans?

  • November 21, 2013 at 12:40 am

    Further to the B12 question, the Swiss company Twydil who produce supplements for top performance horses say in an article on their website ( “Products of vegetable origin contain little or no vitamin B12. The amounts present in animal protein materials are widely variable because of losses during processing. Average figures from tables are liable to be very misleading and any particular sample of a feed may have a widely different vitamin B12 content …”. So, it appears that natural sources of B12, plant or animal derived, are not reliable sources of B12 for horses either.

  • April 2, 2015 at 10:06 am

    Horses can produce their own vitamin C as most mammals, so supplementation would not be required. I would like to see this information confirmed and if correct inserted into this write up.


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