
Drug allergies may cause many different types of symptoms depending on the drug and the degree of exposure to the drug (how often you have taken it). Allergic reactions to
B vitamins are rare and are generally confined to vitamins B3 and B6.These include skin eruptions, hypersensitivity, nausea, vomiting, fatigue, Flushing, joint pains, skin rash, muscle cramps and fever.
Treatment of vit B allergy includes stopping the intake of vit B.