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Supplements/Vitamin

Vitamin C (Harm-Reduction Antioxidant)

Water-soluble antioxidant — quenches dopamine quinone and other reactive metabolites.

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Overview

Water-soluble antioxidant — quenches dopamine quinone and other reactive metabolites.

Natural sources
  • Whole-food sources (animal products for fat-soluble and B-complex vitamins; produce for water-soluble vitamins)
  • Fortified foods (cereals, dairy, plant milks, nutritional yeast)
  • Multivitamins or stand-alone supplements in synthetic or food-derived form
Common forms
  • Capsule or softgel
  • Sublingual tablet or liquid
  • Methylated active form for sensitive individuals
  • Multivitamin matrix

Mechanism of action

Recycles other antioxidants; scavenges ROS generated during catecholamine metabolism.

Pathways
  • · Recycles other antioxidants
  • · scavenges ROS generated during catecholamine metabolism

Effects on the body

Supports
Reduced amphetamine-induced neurotoxicity (animal)

Organ system effects

Immune System

Vitamin C (Harm-Reduction Antioxidant) modulates innate and adaptive immune responses, including cytokine signaling and barrier function.

Evidence-based benefits

Reduced amphetamine-induced neurotoxicity (animal)

Limited evidence

Potential side effects

Common
  • · Loose stools at high dose
Rare
    Serious

      Drug interactions

      Prescription medications (general)
      Always disclose Vitamin C (Harm-Reduction Antioxidant) use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.
      minor

      Safety & non-supplemental interactions

      Educational summary — always confirm with your clinician or pharmacist before starting, stopping, or combining with prescription therapy.

      Avoid with these conditions
      • ·Autoimmune disease (theoretical immune activation)
      Avoid / monitor with these medications
      • ·Immunosuppressants
      Other notes
      • ·Discuss with a clinician if you have active liver disease or take hepatotoxic medications.

      Supplement interactions

      Pairs well with
      • Vitamin D3 + K2
        Foundational immune modulation.
      • Zinc
        Required cofactor for innate and adaptive immune function.
      Avoid combining with

      No specific avoidances listed.

      Dosing & bioavailability

      Typical dose
      500–1000 mg before and after
      Best form
      Most evidence is based on the capsule or softgel form.
      Timing
      Consistent daily timing recommended; split larger doses if GI tolerance is a concern.
      With food?
      Optional

      Where to buy

      Affiliate links — we may earn a commission at no extra cost to you. Amazon code supplementsch-20 is auto-applied at checkout. We don't endorse specific brands; verify third-party testing (USP, NSF, Informed Sport) before purchase.

      Scientific evidence8Show studies
      Systematic reviewJ Am Coll Nutr · 2003

      Vitamin C and oxidative stress reduction

      Padayatty SJ, et al.

      Review of vitamin C's antioxidant roles.

      Key findings

      Reduces lipid peroxidation and oxidative damage markers.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Vitamin C (Harm-Reduction Antioxidant) — Reduced amphetamine-induced neurotoxicity

      Live PubMed search

      Live results for "Vitamin C (Harm-Reduction Antioxidant) Reduced amphetamine-induced neurotoxicity" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Vitamin C (Harm-Reduction Antioxidant) and "Reduced amphetamine-induced neurotoxicity". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Vitamin C (Harm-Reduction Antioxidant) — randomized controlled trial

      Live PubMed search

      Live results for "Vitamin C (Harm-Reduction Antioxidant) randomized controlled trial" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Vitamin C (Harm-Reduction Antioxidant) and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Vitamin C (Harm-Reduction Antioxidant) — meta-analysis

      Live PubMed search

      Live results for "Vitamin C (Harm-Reduction Antioxidant) meta-analysis" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Vitamin C (Harm-Reduction Antioxidant) and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Vitamin C (Harm-Reduction Antioxidant) — pharmacokinetics

      Live PubMed search

      Live results for "Vitamin C (Harm-Reduction Antioxidant) pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Vitamin C (Harm-Reduction Antioxidant) and "pharmacokinetics". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Vitamin C (Harm-Reduction Antioxidant) — safety adverse events

      Live PubMed search

      Live results for "Vitamin C (Harm-Reduction Antioxidant) safety adverse events" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Vitamin C (Harm-Reduction Antioxidant) and "safety adverse events". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewPubMed (NLM) · 1970

      PubMed: Vitamin C (Harm-Reduction Antioxidant) — dose response

      Live PubMed search

      Live results for "Vitamin C (Harm-Reduction Antioxidant) dose response" across the PubMed/MEDLINE peer-reviewed index.

      Key findings

      Opens current human and preclinical literature matching Vitamin C (Harm-Reduction Antioxidant) and "dose response". Filter by RCT, meta-analysis, or year on the results page.

      Open study
      Systematic reviewGoogle Scholar · 1970

      Google Scholar: Vitamin C (Harm-Reduction Antioxidant) — clinical evidence

      Live Scholar search

      Cross-database citation index for Vitamin C (Harm-Reduction Antioxidant) as it relates to "clinical evidence".

      Key findings

      Includes preprints, theses, and journal articles. Useful for tracking citation counts and follow-on work.

      Open study
      Educational use only. This profile is not medical advice. Consult a qualified healthcare professional before starting any supplement, especially if you take prescription medication or have a chronic condition.

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