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 Meanwhile the sky is clearing, although the Corona weathermen still spot dark clouds on the horizon.

In our pharmacy, the use of antibiotics has decreased enormously, which indicates very few infections of a bacterial nature.
This is a direct consequence of the impact of hand hygiene -including no more handshakes- the mouth masks and the social distance rule.
Also staying outside in the fresh spring air costs nothing and offers only advantages.
A link was indeed found between vitamin D and Corona.
Those who have a vitamin D deficiency (up to 30 % of our population during the winter) are more likely to experience serious lung damage in case of a Corona infection.
Despite many good supplements, the best source of vitamin D remains safe exposure to the sun.
If the weather is suitable, try to remain naked in the sun for at least half an hour a week.
The best times are before 10 o’clock and after 17 o’clock.
On the positive side, we have learned to appreciate how beautiful it is to be allowed to “do” normal simple things freely.




The FASFC requires us to print the following warning about choline chloride on certain labels.
Simultaneous administration with drinking water to which choline chloride has already been added must be avoided.
This requires some explanation:

Choline chloride is commonly classified as a vitamin.
It appears in many products in the pigeon world (Comin Cholin B-complex, Jovati Sedugolll, Tollisol etc, …).
It belongs to the family of water-soluble B vitamins.
It was formerly known as vitamin B4.
Like other vitamins, it plays an important role in the diet, but its daily requirement seems to be hundreds of times greater than that of other vitamins.
It is a common substance in living beings.
In foodstuffs choline occurs in free form or as phosphatidylcholine (lecithin).
The highest levels can be found in egg yolk, but also in beef, chicken and offal (liver).
Soybeans are also rich sources.

In smaller quantities it is present in cereals (e.g. wheat germ) as well as in fruits and nuts.
What is it used for?
* As a component of lecithin, it is important for the structure of the cell membrane and ensures the transport of lipids from the liver to other parts of the body, thus preventing fat accumulation in the liver. Lecithin, in turn, plays an emulsifying role in the intestine so that the feed is better absorbed.
As you know, it’s very important for the pigeon that there’s enough fat present in the chest and heart muscle to be able to perform well.

* It’s a precursor in the synthesis of the neurotransmitter acetylcholine, which supports an interaction in muscle control in case of stress which in turn strongly influences the immune system.

* It is a source of loose methyl groups, which are essential for numerous biological processes and therefore an important factor for healthy growth.

The FASFC requires us to mention the following warning on the label:

  • Simultaneous use with water for drinking to which Choline Chloride has been added should be avoided.

This causes some uncertainty and confusion.
Some manufacturers who do not comply with this provision expose themselves to penalties in case of inspections, usually they are just not aware.
The legislation is very complex and evolving.
Almost daily there are large or small alterations.
Because Belgium still considers our pigeons as food producing animals, the provisions have been interpreted very strictly.

When you order a pigeon in a restaurant, you can’t tell if it was one of the sport pigeons from the loft of a breeder or a consumption pigeon from the poultry sote which has thousands of them under the provision poultry, …

Supplementation of Choline has always been popular as a growth-enhancer.
It was subjected to numerous tests in the poultry industry and the recommended doses were thoroughly checked for accuracy.
The fact is that one cannot say exactly how much is too much.
You should therefore avoid the simultaneous administration in the water of e.g. Comin Cholin B-complex with one of the many variants that also contain extra Choline, available on the market.
Indeed, we know that the ideal dose and the overdose are close together.
The positive effect on growth for pigeons is between 0.7 to 2 g per kg feed or 2 litres of water.

According to studies, administrating more would be counterproductive, resulting in less rather than more growth.
There are also many factors that influence absorption and processing by the body.
The presence of e.g. B12 affects the absorption in a favourable way and also of certain nutrients.
Some foodstuffs also contain an extra amount of Choline (e.g. soy is a good source).
Other tests showed that e.g. a tenfold dose poses no risk to the animal itself, neither to humans who would eat the animal nor to the environment.

The strong smell of fish at high doses would not immediately irritate the eyes and airways.

But – and here the problem lies – there are insufficient studies showing that people working in farms where Choline Chloride is permanently added to the drinking water and exposed to the penetrating odour are completely safe.

The mandatory warning is therefore certainly useful both for industrial poultry farming and for us pigeon fanciers. It is important to know that simultaneous administration of several preparations containing Choline Chloride, will overshoot the target and will reduce the growth rather than improve it.

Trop is too much,…

For a long time I argue for a coherent approach. Fans who puzzle a system with all kinds of products from different producers risk missing such sensitive information and can be disappointed.


At Comed, Comin Cholin B-complex, Tempo 60, Myobol and Lysocur Forte contain a supplement of Choline Chloride. If these 3 products are applied at the same time, they still remain below the specified dose of 2 g per kg feed or 2 litres of water.




When ordering via our website (, a free sample is sent with each order.

Pharmacist Jean-Louis Jorissen