Vitamin C (Liposomal)

Mechanism of Action

Ascorbic acid is an essential electron donor and cofactor for numerous enzymatic reactions. It is required for collagen synthesis (prolyl and lysyl hydroxylases), carnitine biosynthesis, catecholamine synthesis (dopamine beta-hydroxylase), and alpha-ketoglutarate-dependent dioxygenases including HIF-prolyl hydroxylases and TET methylcytosine dioxygenases (epigenetic regulation). It regenerates oxidized vitamin E, supports immune function via neutrophil chemotaxis, phagocytosis, and lymphocyte proliferation. Liposomal delivery bypasses SVCT1/2 transporter saturation, achieving plasma levels closer to IV administration.

Dosing Protocol

Notes

Bowel tolerance (diarrhea onset) varies enormously between individuals and increases during illness — this can be used diagnostically. Liposomal form largely eliminates the bowel tolerance limitation. IV vitamin C (25-100g) is a separate clinical tool for acute illness and integrative oncology — requires G6PD screening. The oxalate concern is real but primarily at >2g/day regular oral (non-liposomal) dosing. Whole blood or plasma vitamin C levels can be tested.

Stacking

• Zinc
• Quercetin
• NAC
• Vitamin E
• Collagen

Interactions

• Iron supplements [LOW] — Vitamin C enhances non-heme iron absorption (beneficial in deficiency, problematic in hemochromatosis)
• Chemotherapy (some protocols) [MEDIUM] — High-dose IV vitamin C may interfere with or enhance certain chemo agents — oncologist must approve
• Estrogen-containing contraceptives [LOW] — Vitamin C may increase estrogen levels by inhibiting its sulfation

Contraindications

• Hemochromatosis (enhances iron absorption)
• G6PD deficiency (high-dose IV can cause hemolytic anemia)
• History of calcium oxalate kidney stones (may increase oxalate at high oral doses)
• Renal insufficiency (accumulation risk)

Side Effects

• Diarrhea/GI upset at high non-liposomal doses (bowel tolerance)
• Kidney stone risk (oxalate pathway)
• False blood sugar readings on glucometers
• Dental erosion (chewable forms)

Key Papers

• 10.3390/nu9111211
• 10.1016/j.cca.2017.07.004
• 10.1073/pnas.0510650103

Source Quality

Liposomal vitamin C (phosphatidylcholine liposomes) achieves 1.5-2x higher bioavailability than standard. True liposomal requires proper phospholipid encapsulation — not just emulsions marketed as liposomal. Brands: LivOn Laboratories Lypo-Spheric (gold standard liposomal), Quicksilver Scientific, Pure Encapsulations. For non-liposomal: sustained-release or Ester-C.

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