Why violent head aches from thiamine mononitrate?

Violent headaches from thiamine mononitrate can occur due to a rapid increase in thiamine levels, which may lead to changes in neurotransmitter activity and vascular responses in the brain. Additionally, some individuals may have sensitivities or Allergies to the compound, resulting in adverse reactions. If headaches persist, it's advisable to consult a healthcare professional for further evaluation and guidance.