Related Clues:

• 'Don't let the man stand outside, ___!'
• A, B or C, e.g.
• Calciferol, e.g.
• Niacin, for one
• Dietary supplement
• A, C or E
• Daily supplement
• Folic acid, for one
• A, B, C, D, E, or K
• A, C, or D
• Natural organic substance essential to health
• Natural substance essential to health
• A vain imposter? Creative prose wasted, perhaps
• Tense French pal cuts his tipple with retinol, say
• Tim, Ivan (anag)