My lower abdomen hurts as soon as I take B-complex vitamins.

In general, abdominal pain after taking B-complex vitamins may be caused by improper use, indigestion, allergies, or other reasons. A detailed analysis is as follows:

1. Improper Use

B-complex vitamins are acidic medications. Taking them on an empty stomach may irritate the digestive tract and cause lower abdominal pain. Symptoms can usually be relieved by drinking more warm water to accelerate metabolism and alleviate discomfort.

2. Indigestion

If a patient frequently overeats, it may increase the burden on the gastrointestinal tract, leading to indigestion. After taking B-complex vitamins, these substances may be difficult to digest in the gastrointestinal tract, worsening symptoms such as abdominal pain and diarrhea. Patients can follow medical advice to take medications such as Bacillus subtilis bichimeric granules or Jianwei Xiaoshi tablets, while also adjusting their dietary habits.

3. Allergic Reaction

If a patient is allergic to B-complex vitamins, taking them may cause edema of the gastrointestinal mucosa, resulting in lower abdominal pain. In such cases, patients can take anti-allergy medications as directed by a physician, such as prednisone acetate tablets or loratadine tablets.

Besides the above-mentioned causes, abdominal pain might also result from chronic gastritis, enteritis, appendicitis, or other conditions. Patients should seek timely treatment at a qualified hospital to avoid delayed diagnosis and unpredictable complications.