Evidence supporting the use of: Vitamin C
For the body system: Brain

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Vitamin C (ascorbic acid) is supported by scientific evidence as an important nutrient for brain health, though most research focuses on its general role in brain maintenance rather than as a treatment for specific neurological conditions. Vitamin C is a potent antioxidant, protecting brain cells from oxidative stress, which is implicated in aging and neurodegenerative diseases like Alzheimer’s and Parkinson’s. The brain contains high concentrations of vitamin C, especially in regions involved in cognition, suggesting its physiological importance.

Experimental and observational studies have shown that vitamin C deficiency can impair cognitive function, while adequate levels are associated with better mental performance. Some small clinical studies have linked higher vitamin C status with improved cognitive function in elderly populations, although results are mixed and causality is not established. Preclinical research also shows that vitamin C is involved in neurotransmitter synthesis (such as dopamine and norepinephrine), and in modulating neuronal signaling and neuroprotection.

However, there is no compelling evidence that supplementation above the recommended daily allowance improves brain function in healthy individuals. Large-scale, high-quality clinical trials are lacking. Therefore, while there is a plausible biological rationale and some supporting evidence, the overall strength of evidence for vitamin C supplementation to support the brain is moderate.

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apple
ashwagandha
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black cumin
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black garlic
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fava bean
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fish oil
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folate
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gamma linolenic acid (GLA)
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Products containing vitamin C

Nature's Sunshine Love and Peas (Sugar Free)
Nature's Sunshine Adrenal Support
Nature's Sunshine Bowel Detox
Nature's Sunshine Children's Elderberry Immune
Nature's Sunshine Children's MultiVitamin & Mineral
Nature's Sunshine Cortisol Formula (Nature's Cortisol Formula)
Nature's Sunshine Defense Maintenance
Nature's Sunshine Detox Basics (Best used by 7/31/25)
Nature's Sunshine Dieter's Cleanse
Nature's Sunshine Glandular System
Nature's Sunshine Grapine With Protectors (SynerPro)
Nature's Sunshine Hepatic System
Nature's Sunshine Iron (Chelated)
Nature's Sunshine Love and Peas
Nature's Sunshine Marine Collagen
Nature's Sunshine Marine Glo Collagen
Nature's Sunshine Master Gland Formula®
Nature's Sunshine Mega-Chel
Nature's Sunshine Milk Thistle Combination
Nature's Sunshine MultiVitamin & Mineral (SynerPro)
Nature's Sunshine MultiVitamin & Mineral (Time Release)
Nature's Sunshine Natural Changes
Nature's Sunshine Nature's Prenatal
Nature's Sunshine Nature's Harvest
Nature's Sunshine Nervous System (30 Day Program)
Nature's Sunshine Nutri-Calm
Nature's Sunshine Nutri-Calm
Nature's Sunshine Perfect Eyes
Nature's Sunshine Power Beets Pouch
Nature's Sunshine Power Beets To-Go Packs
Nature's Sunshine Power Greens
Nature's Sunshine Power Greens To-Go
Nature's Sunshine Skeletal Strength
Nature's Sunshine Solstic Twenty-Four
Nature's Sunshine Solstic Immune
Nature's Sunshine Solstic Revive
Nature's Sunshine Structural System (30 Day Program)
Nature's Sunshine Super Supplemental
Nature's Sunshine Super Supplemental (Without Iron)
Nature's Sunshine Super Trio
Nature's Sunshine Vari-Gone
Nature's Sunshine Vitamin C (1000 mg, Time Release)
Nature's Sunshine Vitamin C (1000 mg, Time Release)
Nature's Sunshine Vitamin C Ascorbates
Nature's Sunshine Chewable Vitamin C
Nature's Sunshine Citrus Bioflavonoids (Vitamin C)
Nature's Sunshine Zinc Lozenge