Still worried? Add fresh meat or fish to raise the taurine levels.
You don't have to go all raw but adding fresh, frozen or freeze-dried meat to your dog's diet will boost the taurine levels and help prevent heart disease. Both whole grain and grain-free foods are fine as long as the first five ingredients contain actual meat and not too many high-glycemic starches.
And don’t forget fish, which is high in taurine and also in methionine and cystine, from which dogs make taurine (unless they have a special problem and for some reason cannot do this).