Creatine is an amino acid that naturally occurs in the body and is essential in producing energy for short bursts of intense activity. It's commonly used as a supplement for workouts.
The largest concentrations of creatine found in animal products may be found in various types of red meat.
Ground beef contains 2.5 grams of creatine per raw kilogram and 511 milligrams per cooked serving. A 3.5-ounce serving also provides 26 grams of protein and 11 grams of fat.
Chicken is a natural source of creatine, containing 2.2 grams per raw kilogram and 443 milligrams per cooked serving.
Herring is the seafood with the highest creatine content, with 6.5-10g per kg of raw fish and 938mg per cooked dish.
Fish like salmon, tuna, and cod are great natural sources of creatine. Salmon has 2.5 to 4 grams of creatine per raw kg and around 511 mg per cooked serving.
Tuna has 4g creatine per kg raw and 455mg per cooked serving. 3oz tuna has 21.7g protein and 0.7g fat.
Dairy sources have lower creatine than meats and seafood but are still viable for vegetarians as a creatine source
Pumpkin seeds are rich in arginine and glycine, amino acids that stimulate creatine synthesis. They also provide 5.27 grams of protein.
Sesame seeds provide glycine for creatine synthesis. One tablespoon has 1.5g protein, 4.47g fat, and 2.11g carbs.
Walnuts are a source of arginine. A 28g serving offers 4.3g protein, 18.5g fat, and 3.8g carbs.