Riboflavin
Vitamin B2 dietary sources
The active ingredient can be found in animal products. Apart from meat, riboflavin is naturally present in dairy, beef (or poultry) liver and kidneys, mushrooms, buckwheat, and yeast.
Riboflavin and its benefits
The active ingredient acts on reproductive, immune, and hematopoietic systems. Its sufficient amount in the body makes hair and nails grow faster and improves skin condition. Vitamin B2 also supports thyroid function and reduces optic nerve fatigue.
Vitamin B2 main functions 
- Participates in protein, carbohydrate, and fat metabolism;
- Normalizes blood sugar levels;
- Stimulates erythrocyte production through fast iron absorption;
- Strengthens immunity and protection against viral infections;
- Strengthens the nervous system and reduces anxiety and stress;
- Helps get rid of blackheads, acne, and oily skin;
- Supports visual acuity and improves night vision;
- Balances thyroid hormonal levels.
Vitamin B2 - Daily dose
The exact dosage can be calculated based on gender and age. It is also important to consider general health and certain diseases or congenital pathologies.
The amount of the vitamin in the body might be affected by regular physical exercises, oral contraception, constant psychological and emotional stress, and even weather in weather-sensitive people.
Vitamin B2 - Deficiency symptoms
Vitamin B2 deficiency can be identified through external factors and bodily sensations. The most common symptoms include:
- constantly dry lips with vertical cracks;
- small ulcers and dry skin around the mouth, especially in its corners;
- tongue swelling and redness along the entire length;
- dermatitis, including seborrhea;
- decreased vision with painful sensations.
Severe deficiency of the active ingredient can cause anemia, limb pain, fatigue, and nervous disorders.
Vitamin B2 - Hypervitaminosis symptoms
The excess amount of this water-soluble vitamin is exerted from the body through the urinary tract without harming the kidneys. Frequent urination and bright yellow urine indicate that the dose should be reduced. Rare symptoms of vitamin B2 hypervitaminosis include dizziness, tingling/burning sensations, and numbness.
Vitamin B2 recommended combinations
Folic acid will help increase the positive effect of the supplement and speed up its absorption and distribution in the body. This combination will promote blood cell production. The combination of vitamins B2 and B1 will help regulate iron levels. Vitamin B2 is often used in combination with vitamins B6 and K to improve their action.