07 Nov 2017

Advisory regarding Supplements

News Article

Players and Player Support Personnel are reminded that the risk of violating the Tennis Anti-Doping Programme (TADP) due to supplement use remains high.

Supplements are not classed as foods, and so are not subject to the same manufacturing standards as foods. Research studies have consistently found a significant proportion of supplements to be contaminated with substances that are on the WADA Prohibited List (and so are also prohibited under the TADP) and/or are hazardous to health*.

The TADP does not recommend the use of any supplements. In most cases, a balanced diet of normal foods is sufficient. If, despite this warning, you still wish to take supplements, then Informed Sport (www.informed-sport.com) and NSF (www.nsfsport.com) conduct batch testing of supplements and certifies those that are found to be free of prohibited substances.

Players are also recommended to do the following prior to using supplements:

-Check the ingredients against the WADA/TADP Prohibited List. (A searchable list can be found on the TADP app and website).

-Check the ingredients on the Global Drug Reference Online website (www.globaldro.com).

-Ask a specialist (your doctor or a nutritionist) whether the product contains any prohibited substances (and show him/her a copy of the Prohibited List).

-Search online for the product name and ‘doping’ (or similar search terms).

-Read and assess the manufacturer’s claims. As an example, some supplements containprohibited stimulants and so are described as providing ‘high energy workouts’ or similar. Such claims should constitute ‘red flags’ that the product may contain prohibited substances.

Specific warnings have been issued by the TADP for MHA, DMBA, GW501516 and Higenamine. However, you should not assume that a product without these substances on its ingredients list is free from risk. Certification or other guarantees of purity will not excuse a positive anti-doping test.

If you have any questions, please contact the ITF: anti-doping@itftennis.com.


*Baume et al. (2005). Scand J Med Sci Sports; Geyer et al. (2008). J Mass Spectrom.