Ozzy Osbourne pledged a portion of his tour merch for Parkinson's Research, the rock icon posted on Twitter earlier, April 15.

In his recent tweet, the former Black Sabbath frontman wrote, "Past tours exclusive merch last bits of remaining stock available until sold out! April is #ParkinsonsAwarenessMonth, so 10% of ALL sales going directly to the @MichaelJFoxOrg for #Parkinsons Research."

The merch is available at the Ozzfest eBay page, which includes Black Sabbath and Ozzy shirts, hoodies, patches, tote bags, and koozies. Also available are Black Sabbath memorabilia such as the "Collectors Polished Aluminum Drumstick" as well as autographed and tour exclusive albums and LPs.

The Godfather of Heavy Metal recently released his twelfth solo studio album "Ordinary Man" earlier this year, February 21, his first in a decade since 2010's "Scream."

Ozzy in Recovery

In February 2019, Ozzy Osbourne was hospitalized due to pneumonia, forcing him to postpone the European leg of the "No More Tours 2," his supposed farewell tour and is considered a sequel to his 1992's "No More Tours."

A few months later, in April, Ozzy suffered from a bad fall, which required a neck surgery. The fall dislodged metal rods in his body, which also caused injuries to the rock legend's back and shoulders. This accident, paired with his ongoing recovery from pneumonia, forced him to cancel all his 2019 gigs altogether. He would spend the rest of the year in recovery.

January this year, Osbourne confirmed that he was diagnosed with Parkinson's disease shortly after his unfortunate fall last year. He later canceled the North American leg of his 2020 tour to receive treatment.

His daughter Kelly Osbourne recently gave an update that the rock legend was "doing really good" after receiving a stem cell treatment in Panama. The younger Osbourne said that her dad wants to get up, do things, and be a part of the world again.

Kelly also posted on Instagram to help convince people to stay home, sharing that she does it for her parents. She added that for those who don't have "anyone to stay home for," they can stay home for Ozzy.

The Michael J. Fox Foundation for Parkinson's Research

The beneficiary in Ozzy's latest tweet is the foundation established by Michael J Fox back in 2000. The Canadian-American actor best known for playing Marty McFly in the "Back to the Future" franchise was diagnosed with Parkinson's disease at the young age of 29, back in 1991. He battled the disorder in secret before coming out with the condition in 1998. Fox founded his Foundation for Parkinson's Research, dedicated to advancing research and treatment for the progressive nervous system disorder.

The foundation has various awards that support different types of projects related to the research of Parkinson's disease. Their "Rapid Response Innovation Awards" provides immediate support for "high-risk, high-reward" works while their "Pipeline Programs" funds top research priorities on the medical condition.

Aside from the grants awarded to various research activities, the foundation also prints a semi-annual newsletter and a monthly e-newsletter to keep patrons and supporters updated on the research projects on Parkinson's.