Session check

Supplement

Vitamin C

Supports essential micronutrient pathways and deficiency-related physiology.[1450,2175,2715, etc.]

Superscript reference numbers link to the Sources bibliography.

Strong Evidence

Immune SupportBone HealthEnergyLongevity

immunemito

Composite Rating

4.0/5

Blends evidence depth, community direction, safety friction, and completeness.

Evidence Intensity

100/100

High depth from human/RCT/meta counts

Community Direction

Positive Lean • confidence Moderate

Safety Friction

100/100

High signal from adverse/interaction markers

Data Completeness

100%

Studies 15 • mentions 10 • links 26

Not medical advice. This product is for educational and informational purposes only. It does not diagnose, treat, cure, or prevent any disease and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions regarding a medical condition.

FDA disclaimer: These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Results may vary. Not intended for use by pregnant or nursing women, individuals under 18, or those with known medical conditions without physician consultation.

If you are experiencing a medical emergency, call 911 or your local emergency number immediately.

Implementation Blueprint

Goal alignment: Immune Support, Bone Health, Energy, Longevity.[103,251,304, etc.]

Dose guide: Human-study daily dose: 80 mg-7500 mg/day (higher-confidence extraction from PubMed abstracts)..[103,251,304, etc.]

Category: vitamin.[103,251,304, etc.]

At-A-Glance Evidence Architecture[1450,2175,2715, etc.]

Clinical Depth

Humans: 7,126 • RCTs: 915 • Meta: 243

Cohort / Real-World

Cohort signals: 0

Safety Markers

Adverse signals: 1,818 • Interactions: 1,399

Evidence Tracking

Freshness, trend, and study timeline for this item

Evidence Tracking

Status

New Evidence

Trend

→ Stable evidence base

Depth

10169 total studies · 3 recent

Timeline

20012024

Top Signal Metrics[1450,2175,2715, etc.]

Total indexed

10,169

Human studies

7,126

Animal-only studies

5,439

In vitro / tissue

2,481

Safety adverse signals

1,818

Interaction signals

1,399

Community Direction Mix[103,251,304, etc.]

Weighted direction score: 47 (Positive Lean)

Benefit

Evidence Quality Summary[1450,2175,2715, etc.]

High when >=2 human meta-analyses, or >=5 human RCTs with substantial human literature volume.

Total indexed

10,169

Human studies

7,126

Animal-only studies

5,439

In vitro / tissue

2,481

Safety adverse signals

1,818

Interaction signals

1,399

Randomized trials

915

Meta-analyses

243

Study Type Breakdown

Distribution of evidence by study design strength

Meta-AnalysesLevel 1a243

Randomized TrialsLevel 1b915

Human Studies (other)Level 3-45,968

All IndexedAll levels10,169

100

Evidence Strength: High

Composite of study volume, RCTs, and meta-analyses

Top Human Studies[1450,2175,2715, etc.]

PMID 35365361 • 2022 Jun

ESPEN micronutrient guideline.

Clin Nutr

Open PubMed

PMID 23440782 • 2013 Jan 31

Vitamin C for preventing and treating the common cold.

Cochrane Database Syst Rev

Open PubMed

PMID 37644533 • 2023 Aug 29

Antioxidant vitamins supplementation reduce endometriosis related pelvic pain in humans: a systematic review and meta-analysis.

Reprod Biol Endocrinol

Open PubMed

Community Report Frequency[103,251,304, etc.]

Benefit reports: 7

Adverse reports: 2

No-effect reports: 0

Mixed reports: 1

Unclear reports: 0

Signal confidence: 0.49

Top Reported Effects[103,251,304, etc.]

Benefits

works: 2
benefit: 2
effective: 1
better: 1
sleep: 1
recovery: 1
strength: 1
faster: 1

Adverse

side effects: 1
anxiety: 1

No Effect

insufficient no-effect reports captured: 0

Strong positive empirical sentiment with adequate confidence; boost recommendation priority.

Reddit evidence: 9 mentions (confidence 0.49) across Biohackers, Supplements, nutrition.

Amazon signal: 0 products scanned (confidence 0.00).

GNC signal: 0 products scanned (confidence 0.00) [BLOCKED].

Community Insights[103,251,304, etc.]

Sentiment Score

0.41001999999999994/100

Benefit Mentions

works
benefit
effective
better
sleep

Adverse Mentions

side effects
anxiety

Best Responders

No responder profile recorded.

Community Evidence Examples[103,251,304, etc.]

post • r/Biohackers • unclear

How's my morning supplement stack look? Mostly immune system focused, not getting sick. Garlic Vitamin C Fish oil Green tea extract Elderberry Vitamin D B complex Probiotics Zinc Creatine 39 y/o male

Open mention

post • r/Supplements • unclear

Vitamin C supplements causing fatigue and blurry vision? I’ve noticed taking vitamin C at any dose, even as low as 50mg causes my vision to be more blurry and causes me to be fatigued. Why is this occurring? Could it be due to lowering cop…

Open mention

post • r/Supplements • benefit

The Best Vitamin C Supplements at the Moment? I’ve been looking into vitamin C supplements lately and honestly, the more I read, the more confused I get. There are so many options out there, and everyone seems to have a different favorite.…

Retail Signal Examples

amazon

Amazon search for Vitamin C

Rating: n/a | Reviews: n/a

Open product

Primary Source Links

Evidence Sources

Scientific Evidence Notes[1450,2175,2715, etc.]

1. PubMed evidence summary: Vitamin C

PUBMED • Humans + preclinical triage

Counts aggregated from automated literature sweep and tiering rules.

Outcome: Tier HIGH; humans 7126, RCTs 915, meta-analyses 243.[1450,2175,2715, etc.]

Open source

2. ESPEN micronutrient guideline.

PUBMED • 2022 • Human evidence curation set

PMID 35365361 from Clin Nutr.

Outcome: See linked PubMed abstract for methods and outcomes.[1450,2175,, etc.]

Safety and Pitfalls

Elevated adverse/interactions signal in literature; review medications and conditions before use.[103,251,304, etc.]
High interaction-signal count detected in literature search.[103,251,304, etc.]
Potential side effect: side effects[103,251,304, etc.]
Potential side effect: anxiety[103,251,304, etc.]
ODS safety note: Results from pharmacokinetic studies indicate that oral doses of 1.25 g/day ascorbic acid produce mean peak plasma vitamin C concentrations of 135 micromoles/liter (L), which are about two times higher than those produced by consuming 200 to 300 mg/day ascorbic acid from vitamin C-rich foods [ 10 ].[103,251,304, etc.]
ODS safety note: Pharmacokinetic modeling predicts that even doses as high as 3 g ascorbic acid taken every 4 hours would produce peak plasma concentrations of only 220 micromoles/L [ 10 ].[103,251,304, etc.]
ODS safety note: Additional signs of scurvy include depression as well as swollen, bleeding gums and loosening or loss of teeth due to tissue and capillary fragility [ 6 , 8 , 9 ].[103,251,304, etc.]
ODS safety note: Iron deficiency anemia can also occur due to increased bleeding and decreased nonheme iron absorption secondary to low vitamin C intake [ 6 , 12 ].[103,251,304, etc.]
ODS safety note: Groups at Risk of Vitamin C Inadequacy Certain groups of people are more likely than others to have vitamin C inadequacy, which occurs when intakes fall below the Recommended Dietary Allowance but are still above 10 mg/day.[103,251,304, etc.]
ODS safety note: The following groups are more likely than others to be at risk of obtaining insufficient amounts of vitamin C.[103,251,304, etc.]
ODS safety note: People with severe intestinal malabsorption or cachexia and some cancer patients might be at increased risk of vitamin C inadequacy [ 27 ].[103,251,304, etc.]
ODS safety note: Cancer prevention Case-control studies have reported that people with high dietary vitamin C intakes have a lower risk of certain cancers, and people with cancer have lower plasma concentrations of vitamin C than those who do not have cancer.[103,251,304, etc.]
ODS interaction note: Food and Drug Administration (FDA) developed DVs to help consumers compare the nutrient contents of foods and dietary supplements within the context of a total diet.[103,251,304, etc.]
ODS interaction note: People who have limited food variety—including some older, impoverished individuals who prepare their own food; people who abuse alcohol or drugs; food faddists; people with mental illness; and, occasionally, children—might not obtain sufficient vitamin C [ 4 , 6-9 , 12 ].[103,251,304, etc.]
Legacy caution group: Oxalate kidney stone formers at high doses[103,251,304, etc.]
Legacy caution group: Hemochromatosis patients at high doses[103,251,304, etc.]