No consultants have applied to use medicinal cannabis as a treatment, according to the Health Minister Simon Harris.
Currently a request must be made to the Department of Health if it is to be used by a patient.
Campaigners say it can be used to treat a variety of health problems, most notably the Twomey family from Cork who have moved their daughter to the Netherlands to receive cannabis oil.
Dr Garrett McGovern, a GP at the Priority Medical Clinic, outlines why he thinks colleagues are not keen to prescribe the medication.
Dr McGovern said: "There tends to be a difficulty for doctors, I think, to dissociate themselves from the illicit connotations of that drug.
"So in other words, because that drug has been illegal, because there has been a lot of bad press about, the doctors, I think, feel that the evidence for this drug as a medical product is not up to scrutiny."
Dr McGovern urged GPs to educate themselves about medicinal cannabis.
He said: "I think there is good and emerging evidence, and certainly lots of anecdotal evidence, there are people who wouldn't otherwise get any benefit from traditional medicine who are now getting a benefit from this drug.
"I just wish that the medical community would embrace this drug just a little bit more and maybe try and understand it."