Riboflavin

Riboflavin, or vitamin B2, is necessary for the metabolism of fats, proteins, and carbohydrates, making it particularly important when transitioning to a state of ketosis. Riboflavin helps the body derive energy from fats, which is a fundamental principle of the keto diet. A deficiency in riboflavin can lead to fatigue, weakness, and even digestive issues, which can slow down the process of achieving ketosis. Therefo…

Form And Absorption

For vitamins and active forms, food source, supplement form and lab marker should be separated. Absorption depends on digestion, bile flow, gut status, medications, alcohol and pre-existing deficiency.

How To Use It In Diet

On keto and LCHF, deficiencies are more often linked with monotonous eating than with carbohydrate restriction itself. Meat, fish, eggs, liver, greens, fermented foods and targeted supplements based on labs are safer than random high doses.

When Testing Helps

Testing is especially useful with fatigue, anemia, neurological symptoms, hair loss, cycle disruption, pregnancy, gastrointestinal disease, metformin, acid-suppressing medication or after bariatric surgery. It helps separate true deficiency from the wish to take “something for energy”.

What To Avoid

Starting several high-dose supplements at once is unhelpful because benefit, side effects and interactions become hard to understand. Fat-soluble vitamins, active B-vitamin forms, iron and iodine require particular care because excess can also cause problems.