speak with a healthcare professional rather than assuming that taking a supplement will solve the problem.
- A Sore, Red, or Smooth Tongue
Changes inside the mouth can sometimes provide an important clue.
A vitamin B12 deficiency may cause glossitis, an inflammation of the tongue. The tongue can appear unusually red, smooth, or swollen and may feel sore or burn when eating.
Some people also experience mouth ulcers or changes in taste.
These symptoms can occur with other nutritional deficiencies and oral conditions, so a clinical assessment may be needed to
