He experienced "temporary side effects" after scheduled medical treatment on Thursday, March 27.

The 76-year-old king is now back at his residence at the Clarence House in London, located about 10 miles from Buckingham Palace.

In what is described as a precautionary measure, his public schedule for Friday, March 28 has been canceled.

It was first revealed the king was diagnosed with cancer in early February 2024.

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