In terms of Clauses 13 and 26 of the Constitution of The National Horseracing Authority of Southern Africa (“the NHA”), any amendment to the Constitution shall be by way of a special resolution, passed at a Special General Meeting called for that purpose.

The National Board has resolved to call, and notice is accordingly hereby given of, a Special General Meeting to be held as follows:

Date              : Tuesday, 23 November 2021
Time              : 11h00
Venue            : In person at the Head Office of the NHA,
                        Turf Club Street, Turffontein

or send your Proxy to This email address is being protected from spambots. You need JavaScript enabled to view it. 

To consider and vote on the proposed amendments to the Constitution as set out in the documents titled: "Special Resolutions 1 & 2 (click here) and Special Resolutions 3 (click here). 

For proxy forms click here


Vee Moodley
Chief Executive                                                                                                                                                                                        2 November 2021

International Screening Limits (ISLs), International Residue Limits (IRLs) and Asian Screening Limits (ASLs) have the purpose to ensure that racing jurisdiction screen therapeutic substances (those which aid in the recovery of the horse) at scientifically agreed and therapeutically active concentrations. In the best interest of our racing, the NHA has historically adopted and applied most of these limits from the International Federation of Horseracing Authorities (IFHA) and the Asian Racing Federation (ARF). Examples of screening limits which are not adopted are those for Phenylbutazone and its metabolite (a drug which is banned for use in this country) and anti-ulcer medications (these are allowed by the NHA to be used within racing).

There are substances which are present in the natural environment, in the horse naturally and / or which are contaminants. Many of these are formalised as International Residue Limits (IRL’s) and these are carefully considered and studied by the NHA for their validity and applicability in this country before these are adopted. It must be noted that Atropine and Scopolamine (drugs substances but potentially also very harmful substances) are not adopted as IRLs by the NHA as these are abnormally high in prevalence in this country within toxic plants which have been shown to at times significantly contaminate local horse feed and roughage.  

Dimethyl sulfoxide (DMSO) is a natural substance (liquid and solvent) found naturally in the horse, as well as in nature and in horse feed such as lucerne (alfalfa hay) and oats.

DMSO is known to significantly increase the permeability (enhance the transport) of certain substances through the skin of the horse and it has additionally been implicated to have some anti-inflammatory effects. In the horse it can be used both topically (on the skin) and injectable (it can be administered by infusion).

Within the IFHA and at the NHA the use of this prohibited substance in the horse has historically been monitored against an International Threshold of prosecution of 15 µg/ml in URINE and 1000 ng/ml (equivalent to 1 µg/ml) in PLASMA.  While the specified concentrations have remained unchanged, DMSO is now instead controlled by International Residue Limits (IRL’s) of respectively 15 µg/ml in URINE and 1000 ng/ml in PLASMA.