DAYTONA BEACH — NASCAR announced Thursday night that the “prohibited substances” that led to the suspension of Tim Richmond’s stock-car racing license were cold medicines that can be purchased over the counter under the brand names Sudafed and Advil.

Last week, Richmond reportedly told friends he was taking both drugs to treat a cold.

Last Thursday, Richmond volunteered to a urinalysis administered under NASCAR’s new Substance Abuse Policy. Saturday, when those results came back positive, NASCAR suspended the 32-year-old Ohio native for testing positive for a “prohibited substance.”

Richmond took a second urinalysis Saturday and it came back negative.

NASCAR spokesman Chip Williams said his organization knew as early as last Saturday that the prohibited substances in Richmond’s first test likely were cold medications, but delayed releasing those findings until the sample had undergone “confirmatory tests” by NASCAR drug advisor Dr. Forest S. Tennant.

NASCAR’s statement read: “Pseudoephedrine, a drug normally used for allergies and respiratory conditions, was found in the urine sample submitted by Tim Richmond on Thursday, February 4. This substance was deemed to render Richmond hazardous in a race car. The measured amount indicated a dosage five to 20 times the normal amount.”

Last week, while discussing NASCAR’s drug program, Williams mentioned marijuana, cocaine, PCP and opiates as some of the substances prohibited under the NASCAR policy enacted last month.

NASCAR elected to suspend Richmond after the first test because “pseudoephedrine can cause dizziness, rapid heart beat, hyperactivity, nervousness and shakiness when taken at normal levels. Inappropriate dosages or overdoses can cause increases in these effects, posing a hazard to the safe operation of a racing vehicle.”

As has been the case since Richmond took his first urinalysis last week, he was not available for comment Thursday night.

Last week, on a CBS-TV interview during the network’s presentation of the Busch Clash, Richmond steadfastly maintained that a “mistake” must have been made on the first test. By being held out of that race, Richmond missed out on a guaranteed minimum payday of $10,000.

In addition to pseudoephedrine, NASCAR reported that ibuprofen, sold commercially as Advil, also was found in the sample. NASCAR said ibuprofen could “potentially increase the effects of pseudoephedrine.”

Despite the nature of the drugs revealed in the first test and Richmond’s negative test on his second sample, he still will not be allowed to compete in Winston Cup events until he turns over his personal health records to a NASCAR physician. Williams said that request stems from the reported double-pneumonia that sidelined Richmond for most of last season.

Richmond has retained New York attorney Barry Slotnick to handle the case.

Asked if NASCAR would handle the case in the same way again, Williams said: “I would say, yes.”

Williams said that with the dosages detected in Richmond’s sample, he would “not recommend driving a passenger car.”

Asked if he thought the way the findings were handled damaged Richmond’s reputation, Williams said: “I wouldn’t think so.”

As defined in Section 2 of NASCAR’s policy, “the misuse of a legal prescription drug or over-the-counter drug is strictly prohibited.”