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Vitamin

Ascorbyl Palmitate (Vitamin C Ester)

Also known as: Vitamin C ester, Ascorbic acid palmitate, Lipophilic vitamin C, Fat-soluble vitamin C

B
Evidence

Ascorbyl palmitate is a fat-soluble form of vitamin C created by esterifying ascorbic acid with palmitic acid, designed for enhanced absorption in lipid environments. While theoretically superior for cellular penetration and stability, clinical evidence supporting distinct benefits over standard ascorbic acid remains limited.

Primary uses

  • Antioxidant support
  • Collagen synthesis
  • Immune function
  • Skin health (topical and oral)

How it works

  • Provides bioavailable vitamin C through hydrolysis to ascorbic acid
  • Antioxidant protection via free radical scavenging
  • Cofactor for collagen cross-linking and synthesis
  • Fat-soluble delivery may enhance tissue distribution

Dosage

Typical range
500–2,000 mg daily (ascorbyl palmitate equivalent)
Timing
Anytime; consistent daily intake recommended
With food
May be taken with or without food; fat-soluble form potentially better absorbed with dietary fat
Duration
Safe for long-term use; vitamin C is water- and fat-soluble and excess is typically excreted
Special populations
Individuals with kidney disease or history of kidney stones should limit intake; those with G6PD deficiency should consult healthcare providers

Forms

  • Powder· 70/100
  • Capsule· 70/100
  • Tablet· 70/100

Safety

Common side effects

  • High doses may cause gastrointestinal upset (less common with ester form)
  • Mild nausea or diarrhea

Contraindications

  • High-dose vitamin C not recommended for those with hemochromatosis or thalassemia
  • Caution with history of kidney stones or severe kidney disease
  • G6PD deficiency requires medical supervision

Evidence notes

Vitamin C (ascorbic acid) has strong RCT evidence (grade A). Ascorbyl palmitate specifically is accepted as bioequivalent to ascorbic acid but lacks direct comparative human trials demonstrating superior clinical outcomes. Grade B reflects the established vitamin C evidence with moderate support for the ester form's claimed advantages.

Grade B: Some human trials support key claims; further confirmation needed.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.