RC Ten Cola

First & ten. Text Ten to 737737 for your chance to win Tailgating prizes. Royal Crown Cola, Est. 1905. 10 great tasting calories. Let's Play: letsplay.com. 10 calories per 12 fl oz serving. Consumer comments? 1-800-Drink RC. Please recycle. Low sodium. Caffeine Content: 43 mg/12 fl oz. Full flavor. Only 10 calories. RC Ten has the full flavor of RC Cola with only 10 calories per serving.