Fast Five Quiz: Can You Recognize and Treat Over-the-Counter Drug Abuse and Toxicity?

Mary L. Windle, PharmD


January 13, 2017

Physical examination findings are likely to be normal in patients with vitamin E toxicity; however, evidence of easy bleeding may be present if the prothrombin time is elevated.

Acute vitamin A toxicity can result in the following:

  • Headache

  • Photophobia

  • Abdominal pain

  • Drowsiness

  • Irritability

  • Desquamation

Vitamin B-1 (ie, thiamine) toxicity effects may include the following (single acute toxicity is rare):

  • Tachycardia

  • Hypotension

  • Cardiac dysrhythmias

  • Headache

  • Anaphylaxis

  • Vasodilation

  • Weakness

  • Convulsions

Signs and symptoms of liver toxicity are most common with sustained-release vitamin B-3 preparations.

For more on vitamin toxicity, read here.

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