Reliance sues India's food regulator over 'energy drink' label ban ↧ ↧ Reliance sues India's food regulator over 'energy drink' label ban Mukesh ​Ambani's Reliance Industries has sued India's food regulator for ‌barring it from marketing its Campa-brand products as "energy drinks", non-public court filings show, the latest beverage maker to challenge the labelling crackdown.