4. Liver. Calling it like we see it: a single slice of beef liver contains 6,421 mcg of vitamin A1, which is 713 percent (!) of the daily value.

Calling it like we see it: a single slice of beef liver contains 6,421 mcg of vitamin A1, which is 713 percent (!) of the daily value. 5. Winter squash.

But vegetarians be aware; retinol, or vitamin A1, is only found in animal-sourced foods like cheese, liver, butter, and fish.

Vitamin A1, also known as retinol, is only found in animal-sourced foods, such as oily fish, liver, cheese, and butter. Here are some of the best sources of vitamin A1. 1.

The antioxidant vitamin A comes in three different forms, the best-known being retinol (vitamin A1). You’ll find high levels of vitamin A in foods like: Carrots ...

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Some vitamins and minerals simply work better when eaten together. When specific nutrients are used together in your family's meal, they can boost the nervous system, improve cardio health, and ...