Some of the ingredients in A1 steak sauce have been debated as potentially being unhealthy. The ingredients in A1 steak sauce are tomato puree, distilled vinegar, corn syrup, salt, raisin paste, crushed orange puree, spices and herbs, dried garlic and onion, caramel color, potassium sorbate and xanthan gum.
A1 contains 2 grams of sugar per tablespoon. Xanthan gum, made by fermenting corn sugar with bacteria, also contains carbohydrates from wheat, dairy and soy, all of which are considered allergens. Potassium sorbate is another additive that is considered an allergen. It also has been linked with reproductive toxicity. Caramel coloring can also conceal MSG, which has been shown to promote lung, liver and thyroid tumors in laboratory rates and mice.