B Vitamins Are Essential Vitamins For Normal Function Of The Immune, Nervous System, And Reduction Of Tiredness And Fatigue. Deficiency In B Vitamins Could Cause Fatigue, Anaemia, Depression, Nerve Damage, Abdominal Pain, Hair Loss And Skin Disorders. Healthaid Vegan B Complex Provides A Complete Source Of Highly Absorbable B Vitamins To Help Sustain Energy Levels In The Body And Maintain General Health And Wellbeing.