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Related Concept Videos

Vitamins01:30

Vitamins

Vitamins, derived from the Latin word for life, are essential organic substances required in small quantities for optimal growth and overall well-being. Unlike other organic nutrients, vitamins don't act as sources of energy or building materials but rather facilitate these nutrients' utilization by the body. Vitamins are predominantly coenzymes, assisting enzymes in specific chemical actions, like the oxidation of glucose for energy involving B vitamins. Most vitamins are not produced in our...
Drug Toxicity: Risk factors01:24

Drug Toxicity: Risk factors

Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
Drug Toxicity: Overview01:00

Drug Toxicity: Overview

Drug toxicity quantifies the harm a compound causes to an organism, varying by dose and potentially impacting whole systems or specific organs like the liver. Toxic reactions may arise from venomous insect or spider bites, with effects ranging from mild symptoms to severe outcomes such as brain damage or death. Common forms of acute poisoning include ethanol intoxication and overdose of pain or fever medications, with substances like GHB and heroin being particularly lethal at doses close to...
Teratogenicity01:07

Teratogenicity

The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
Lipid-derived Compounds in the Human Body01:31

Lipid-derived Compounds in the Human Body

Fats and lipids are crucial components in the human body. Some lipid-derived compounds, such as fat-soluble vitamins, eicosanoids, lipoproteins, and glycolipids, also play unique roles to support various  biological processes .
Fat-soluble Vitamins
Fat-soluble vitamins, including vitamins A, D, E, and K, are required in minimal quantities, but their deficiencies can lead to severely abnormal physiological conditions. For example, vitamin A deficiency can cause night blindness, dry skin, delayed...
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants01:18

Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants

Oral anticoagulants are vital tools in preventing and treating blood clotting disorders. This diverse class of medications can be categorized as vitamin K antagonists, exemplified by warfarin, and direct thrombin inhibitors (DTIs), such as dabigatran, as well as factor Xa inhibitors, including rivaroxaban.
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...

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Related Experiment Videos

Vitamin E: cautionary issues.

A P Spencer1

  • 1Medical University of South Carolina, College of Pharmacy, 43 Sabin Street/ QE213A, P.O. Box 250132, 29425, Charleston, SC, USA.

Current Treatment Options in Cardiovascular Medicine
|September 18, 2010
PubMed
Summary
This summary is machine-generated.

Vitamin E is generally safe but requires caution in specific groups. Patients on warfarin, smokers, those with retinitis pigmentosa, or undergoing surgery should avoid or limit vitamin E intake.

Related Experiment Videos

Area of Science:

  • Nutritional Science
  • Pharmacology
  • Clinical Medicine

Background:

  • Vitamin E is a common supplement with antioxidant properties.
  • Its safety profile requires careful consideration in specific patient populations.
  • Interactions with medications and health conditions necessitate a nuanced approach.

Purpose of the Study:

  • To evaluate the safety of vitamin E supplementation.
  • To identify patient groups requiring caution when using vitamin E.
  • To provide guidance on vitamin E use in conjunction with other treatments.

Main Methods:

  • Literature review of vitamin E safety studies.
  • Analysis of clinical trial data and case reports.
  • Synthesis of evidence regarding interactions and contraindications.

Main Results:

  • Vitamin E is relatively safe compared to many cardiovascular medications.
  • Caution is advised for patients on warfarin, smokers, and those with specific conditions.
  • Potential negative interactions exist with beta-carotene in smokers.

Conclusions:

  • Vitamin E is generally safe but contraindications exist.
  • Patients on warfarin, smokers, and those with retinitis pigmentosa or requiring vitamin A therapy should avoid or use caution.
  • Discontinuation is recommended during the perioperative period due to bleeding risk.