Two South African athletes have been given two-year bans ©FINA

Two South African athletes have been handed two-year bans from competition after positive drug tests, the International Swimming Federation (FINA) have announced.

Swimmer Louisa De Jongh was found to have tested positive for the banned stimulant phentermine following a test on December 8 in 2015.

The 21-year-old faced doping controls at the Western Province Aquatics Championships in South Africa.

She had earned two second place finishes at the event, clocking a time of 2min 9.55sec in the women’s 200 metres freestyle.

De Jongh then touched home in the 400m freestyle in 4:37.66.

"The Judicial Committee of the South African Institute for Drug-Free Sport imposed a sanction of two (2) years’ ineligibility on the athlete starting on March 3, 2016," FINA confirmed in a statement.

South African water polo player Jabulani Sibiya has also been banned for two years following a positive test.

The banned substance cannabinoids, the primary chemical compound in cannabis, was detected in an in-competition test on April 23.

His sanction began on September 26.