What is the recommended dosage for Vitamin E?

General: 15 mg/day (RDA); Cognitive Support: 400-800 IU/day

What are the side effects of Vitamin E?

Potential side effects include: Increased bleeding risk at high doses, Nausea and diarrhea, Fatigue and weakness, Blurred vision.

Vitamin E is a fat-soluble antioxidant that protects cell membranes from oxidative damage. The brain's high lipid content makes it particularly susceptible to oxidative stress. Research has explored vitamin E's potential role in supporting brain health, primarily through its alpha-tocopherol form.

What dosage of Vitamin E has been used in cognitive studies?

Cognitive studies have used doses ranging from 400 IU to 2,000 IU of alpha-tocopherol daily. Mixed tocopherol formulations including gamma-tocopherol are also available. The tolerable upper intake is 1,000 mg (approximately 1,500 IU) per day. Consult your healthcare provider before high-dose use.

What are the potential side effects of Vitamin E?

High-dose vitamin E supplementation (above 400 IU per day) has been associated with increased bleeding risk in some studies. It may interact with blood-thinning medications and vitamin K. Some meta-analyses have raised concerns about high-dose supplementation. Consult your healthcare provider.

Vitamin E

vitamin

Also known as: Alpha-Tocopherol, D-Alpha-Tocopherol, Mixed Tocopherols, Tocotrienols

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About

Vitamin E is a fat-soluble antioxidant that protects neuronal membranes from lipid peroxidation. High-dose vitamin E may slow functional decline in moderate Alzheimer's disease, though evidence for prevention is mixed.

How It Works

Fat-soluble antioxidant protecting polyunsaturated fatty acids in neuronal membranes; supports mitochondrial membrane integrity; alpha-tocopherol is the primary brain-active form.

Evidence For Conditions

Condition	Grade	Studies	Participants
Age-Related Cognitive Decline	C	12	3000	View →

Side Effects

Increased bleeding risk at high doses
Nausea and diarrhea
Fatigue and weakness
Blurred vision

Drug & Supplement Interactions

Anticoagulants (increased bleeding risk)
Statins and niacin (may reduce HDL-raising effects)
Chemotherapy and radiation (may reduce efficacy)

Always inform your healthcare provider about all supplements you take.

Related Ingredients

Folate Niacin Vitamin B12 Vitamin B6 Vitamin D

Quick Facts

Dosage: General: 15 mg/day (RDA); Cognitive_Support: 400-800 IU/day
Forms: softgel capsule liquid
Natural Sources: Nuts (almonds, hazelnuts), Seeds (sunflower), Vegetable oils, Spinach, Avocado
Upper Limit: 1,000 mg/day (1,500 IU natural / 1,100 IU synthetic)
Best Time: With meals containing fat

Evidence Summary

Age-Related Cognitive Decline C

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.