(Robyn Beck/AFP/Getty Images)

Cramps may not sound like a serious problem, but as LeBron James taught us last year, they can be debilitating to athletes. And unfortunately for Manny Pacquiao, he’s currently feeling the ailment’s pains.

“There’s no magic cure for it,” Pacquiao’s trainer Freddie Roach told Yahoo Sports reporter Kevin Iole. “We’re doing what we can do. I’ve got the doctors working on it. There are some Filipino guys here who are massaging it for him. The cream cost $1,800 for a single bottle. I wasn’t too happy about that.”

The cream isn’t anything exotic, Iole reports. It’s a prescription anti-inflammatory cream that ended up costing so much because Pacquiao doesn’t have U.S. insurance. Roach said he consulted with the U.S. Anti-Doping Agency before allowing Pacquiao to apply it.

The cost is also not out-of-this-world for Pacquiao, who is slated to take home more than $100 million whether he wins or loses against Floyd Mayweather on May 2, The Detroit Free Press reports.

More important is getting Pacquiao healthy again, especially in his legs which he relies on almost as much as his arms to propel his punches at his opponents.

In conjunction with the his cramps treatment, Roach said he’s also come up with a new running regimen to alleviate pain from Pacquiao’s shin splints.

“I’ve got him on the track a lot more now doing fast sprint-type workouts instead of hill workouts,” Roach said. “I think it’s better for the older fighters sometimes to stay away from the hills so much.”

Pacquiao (57-5-2) turned 36 in December. Mayweather (47-0) is 38.