Possible Clues:

• One of the B vitamins
• An African despot's held in the B compound
• Dietary component in the main cut out
• Article about one old African leader providing health supplement
• This person is probing your old-fashioned food content
• Aneurin greeting African dictator in vacant townhouse
• I am in possession of your vitamin
• Vitamin B1
• I'm outwardly undernourished, having little energy: vitamin B needed
• Aneurin, French friend of yours, once, is outside!