Ask FDA to make ingredients disclosure to protect religious freedom that is promised by US constitutional Rights

At present, FDA allows food manufactures to hide certain ingredients, natural flavors that is not allowed by Hindu Vegetarians. This is violation of US Constitutional Right.
By making laws to hide animal based ingredients, FDA is prohibiting the free exercise of Hindu religion. The food a Hindu thinks is vegetarian, may not be Hindu vegetarian. Hindus in this country don’t have right to exercise freedom of religion in terms of what they eat. For example, most cheese may have animal rennet, pizza might have meat, cookies, ice-cream, bread, donuts might have eggs and sea-food, yogurt may contain gelatin, etc. etc.
By making such laws, FDA is clearly going against US constitution.
FDA should have "Hindu" as label the same way they have for "Kosher" food.