NBA Draft prospect says he thought he was going to die from cramping caused by creatine

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Kansas star Darryn Peterson is set to likely be a top-five pick in this summer's NBA Draft, but there was a time a few months ago he did not think that day would come.

Peterson missed 11 games this season and had his time cut short in several others due to a series of cramping issues, but the worst one came before the season even started.

Peterson told ESPN recently that in September, he was taken to a hospital from a practice with severe cramping throughout his entire body.

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Kansas Jayhawks guard Darryn Peterson controls the ball against St. John's Red Storm guard Oziyah Sellers in the second half of a second-round men's NCAA Tournament game at Viejas Arena in San Diego, California, on March 22, 2026. (Kirby Lee/Imagn Images)

"I made it to the training room and just started begging them to call 911. They were trying to get a vein to get me the IV, get me back hydrated. But I was cramping so hard they couldn't get a vein," Peterson said.

"I thought I was going to die on the training table that day."

After months of searching for answers, Peterson said that high doses of creatine resulted in the cramping.

Creatine, used to increase muscle size, is perhaps the most studied supplement on the market and has numerous benefits. But for Peterson, it prompted a scary situation.

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"I'd never taken it before [going to college]. But after the season I took two weeks off and they did tests which showed my baseline level was already high. So, they said when I dosed, it must've made the levels unsafe,"