What Are the Dangers of Grape Seed Oil?

No Manufacturing Standards

• Drugs.com reports there are no regulated standards for manufacturing grape seed oil compounds. This website reports instances of contamination of grape seed oil with toxic metals or drugs. This risk can be minimized if the grape seed oil is obtained from a source you trust and find reliable.

Common Side Effects

• Common side effects of grape seed oil may include dizziness, nausea and headache, according to Aetna Intelihealth. Dry and itchy scalp is another potential side effect, according to the website.

Pregnant and Nursing Women

• Drugs.com reports that a danger of grape seed oil is its potential for causing problems in an unborn or breast-feeding child is unknown. Therefore, it should be assumed to be harmful and avoided if you are pregnant or nursing a child.

Allergic Reaction

• Intelihealth reports that an allergic reaction to grape seed is a possibility. Some signs of this may include difficulty breathing, throat closing, swelling of lips, tongue or face, or a breakout of hives. If you experience any of these symptoms, contact a doctor immediately.

Blood Thinning Property

• The University of Maryland Medical Center says that grape seed oil may interact with blood thinners. In fact, grape seed oil may act as a blood-thinner itself. If you're taking other anticoagulants it may increase the risk of bleeding. It's important to check with your doctor before taking grape seed oil if you are taking blood thinning drugs or have a bleeding disorder.