Botham was reportedly admitted to hospital in Adelaide on Monday after Australia crushed England to open up a 2-0 Ashes series lead.

Australian cricket great Dean Jones, who is trekking from Melbourne to Sydney to raise funds and awareness for multiple sclerosis, revealed the news when he tweeted his wishes for Botham's speedy recovery.

Botham and ex-Australian captain Allan Border are Jones' headline guests for MS Ashes Trek events in central Victoria on Wednesday.

The activities include a cricket clinic with Jones and Border at the QEO from 9.30am and dinner at the Michelton Winery with the trio from 7-10pm.

A luncheon at the All Seasons Hotel has been cancelled due to poor ticket sales.

On Tuesday, Jones told reporters he hoped Botham would attend the Michelton Winery dinner.

"He hasn't been too well, he's had a bit of a scare," Jones said.

"He's on a plane back today (Tuesday) to Melbourne to help me out with a couple of things with MS.

"But it's just quietening down a little, so hopefully he'll be alright."

Despite Botham's sudden health issue, Jones couldn't resist a jibe at 'Beefy's' expense.

"Ian Botham's going to be here, touch wood, and getting over his sudden illness that he's got a the moment, probably obviously getting over the shock of 2-0," he said.

Jones and Border hosted activities in Sunbury and Hepburn Springs on Tuesday for the MS Ashes Trek's opening day.

The Australian cricket champions will run Wednesday's coaching clinic for juniors from 9.30-11am at the QEO.

Former AFL players Danny Frawley and Michael Roberts, who will MC, will join the group for the dinner at Michelton Winery.

MS Australia representatives will also attend.

On Thursday a galaxy of sports stars will tee-off in a golf day at Heathcote Golf Club from 11am-4pm.

Special guests include Jarrod Lyle, Brad Hughes, Brooke Salmon, Rodney Hogg, Danny Frawley, Michael Roberts, Steven Johnson and Craig Bradley.

For tickets head to www.msashestrek.com.au.

Jones' trek for a disease affecting more than 23,000 Australians will end in Sydney on December 18.