Donald Trump's adult children recalled how their father, now running for the Republican presidential nomination, used to tell them every morning before leaving for school not to drugs, drink alcohol or smoke cigarettes.

The topic came up Tuesday night during a CNN town hall when a member of the audience asked the GOP front-runner, his four grown children and wife Melania, how he protected his kids from abusing substances.

"When my children were growing up, even when they didn't know what drinking was, I'd say 'no alcohol, no cigarettes, no drugs,'" Trump recalled.

Eric and Ivanka chimed in together, stating "every day of our life" and "every morning before school" their father told them not to use, drink or smoke. Mr. Trump said he instilled that message in them even before they really even knew what alcohol or drugs were.

For the father of five, who admits he has never had a drink despite owning the largest winery on the East Coast, there's no temptation to resort to alcohol because he decided decades ago, he would never consume it.

Trump attributed that decision to watching his now-deceased older brother Freddy struggle with alcoholism until the day he died in 1981.

"My brother was just so instrumental in probably shaping my life just because I don't know what the outcome would have been," finished Trump.