D/L-menthol administered with the diet for 13 weeks to rats (up to 937/998 mg/kg bw/d for males/females) and mice. (up to 3913/4773 mg/kg bw/d for males/females) did not induce any effects on organ weights.
Whole grain products, pastas and cereals contain thiamine. Manufacturers fortify breads and cereals with B vitamins, especially foods such as white flour or white rice, because refining the foods destroys the natural thiamine found in the food.Yeast in bread products also contains thiamine.oods such as dairy products, vegetables and fruits do not have large amounts of thiamine, but do have some. Eating these foods in large amount may contribute a significant amount of thiamine for the body, according to the University of Maryland Medical Center.
Some sources of thiamine are meats, nuts, and beans. The danger for the heavy drinker is that alcohol consumption reduces the availability of the essential nutrient thiamine. Thiamine deficiency caused by alcoholism is specifically damaging to the heart and brain function.