Vitamin C 90 Capsules - 90 Servings | Supplement

Vitamin C 90 capsules: powerful antioxidant for the immune system, skin and recovery. 1000mg per serving, 90 servings. Buy on Wellfitstore.com

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Vitamin C: The Essential Antioxidant for Health and Performance

Vitamin C  is one of the most important micronutrients for the human organism: a powerful water-soluble antioxidant essential for the immune system, collagen synthesis, iron absorption and cellular protection from oxidative stress. This supplement provides 1000mg of pure vitamin C (ascorbic acid) per capsule, with 90 capsules that they guarantee 90 servings full daily support.        

Vitamin C  it cannot be produced by the human body or stored long-term, making daily supplementation essential for athletes, active people and anyone who wants to optimize health, immunity and overall well-being. With 1111% of the VNR (Nutrient Reference Value) per dose, this supplement ensures optimal levels of vitamin C to maximize all its scientifically proven benefits.  

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What is vitamin C and how does it work

Vitamin C  (L-ascorbic acid) is one essential water-soluble vitamin , which means: 

• The body cannot synthesize it autonomously (unlike most animals)  
• It must be taken daily through diet or supplementation  
• It is not stored  in the body (excesses eliminated with urine)
• Contributions are needed constant and regular 

The 8 Key Functions of Vitamin C in the Body:

1. Powerful Antioxidant

• Neutralizes free radicals : unstable molecule that damages cells, DNA, proteins
• Protects from oxidative stress : caused by pollution, smoking, UV rays, strenuous exercise
• Regenerates other antioxidants : vitamin E, glutathione
• Result: reduction of aging cell phone and risk of chronic diseases  

2. Enhanced Immune System

• Stimulates leukocyte production  (white blood cells): neutrophils, lymphocytes, phagocytes
• Improves immune cell function : phagocytosis, chemotaxis, proliferation
• Strengthened epithelial barrier : skin and mucous membranes (first line of defense)
• Result: -30-40% duration of colds , reduction of respiratory infections 

3. Collagen Synthesis

• Vitamin C is a cofactor  essential for the enzymes that synthesize collagen
• Collagen = structural protein  more abundant in the body (30% total protein)
• Present in: skin, bones, cartilage, tendons, ligaments, blood vessels
• Result: elastic skin , healthy joints, rapid wound healing 

4. Improved Iron Absorption

• Vitamin C increases the absorption of non-heme iron  (vegetable) up to +300%
• Converts ferric iron (Fe³⁺) into ferrous iron (Fe²⁺), which is more absorbable
• Fundamental for vegetarians/vegans (less bioavailable vegetable iron)
• Result: prevention of anemia , optimal energy 

5. Neurotransmitters and Mood

• Cofactor for neurotransmitter synthesis : serotonin, norepinephrine, dopamine
• Vitamin C is needed to convert tryptophan → serotonin (mood, sleep)
• Present in high concentrations in the brain and adrenal glands
• Result: improved mood , reduction of mental fatigue 

6. Adrenal Function and Stress Management

• The adrenal glands  (produce cortisol, adrenaline) have the highest concentration of vitamin C in the body
• Physical/mental stress depletes quickly vitamin C  
• Vitamin C supports hormone production  of stress in a regulated way
• Result: better response to stress , reduction of fatigue 

7. Cardiovascular Health

• Protects the endothelium  (blood vessel lining) from oxidative damage
• Improves endothelial function  and vasodilation (nitric oxide)
• Reduce blood pressure  (some studies: -3-5 mmHg)
• Reduces oxidized LDL  (damaged "bad" cholesterol)
• Result: cardiovascular risk reduction 

8. Sports Recovery

• Reduce oxidative stress  from intense exercise
• Supports collagen synthesis  for tendon/ligament repairs
• Reduce cortisol  post-workout
• Supports the immune system  (intense training depresses immunity)
• Result: optimized recovery , fewer injuries 

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Ingredients and Composition

Active Ingredient:

• Vitamin C (L-ascorbic acid) : 1000 mg per capsule
• Form : pure ascorbic acid (most studied and bioavailable form)
• Purity : Pharmaceutical grade
• Origin : synthesis (identical to natural vitamin C at the molecular level)

Other Ingredients:

• Capsule : gelatin (or HPMC if vegetable - check label)
• Anti-caking agents : magnesium stearate, silicon dioxide (minimum quantity)
• Zero : sugars, sweeteners, artificial colors, GMOs, gluten, lactose

Allergens:

⚠️ Check label for: possible presence of gelatin capsule (animal origin)  

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Nutritional Values

Per capsule (daily dose):

*VNR = Nutrient Reference Values

Contents:

• 90 capsules
• 90 servings  (1 capsule = 1 serving)
• Duration : 3 months (1 capsule/day)

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Benefits of Vitamin C: What Science Says

💪 For Sportspeople and Athletes

Reduction of Oxidative Stress

• Intense exercise  generates free radicals (ROS) that damage muscle cells
• Vitamin C neutralizes ROS  and prevents oxidative damage
• Study Gomez-Cabrera et al., 2008 : Vitamin C reduces markers of post-exercise oxidative stress

Immune System Support (Prevention of Overtraining)

• Athletes who train intensely have a greater risk of infections respiratory  
• Vitamin C (200-1000mg/day)  reduces the incidence and duration of colds 30-50% in athletes (meta-analysis Hemilä & Chalker, 2013)  
• Particularly effective in endurance sports (marathon runners, cyclists)  

Collagen Synthesis for Tendons and Ligaments

• Vitamin C + gelatin  (rich in glycine/proline) improve collagen synthesis 
• Study Shaw et al., 2017 (American Journal of Clinical Nutrition) : 15g gelatin + 50mg vitamin C improve collagen synthesis articulate  
• Benefit: reduction of accidents tendons/ligaments, faster recovery  

Post-Workout Cortisol Reduction

• Elevated cortisol  (catabolic hormone) post-workout can interfere with recovery
• Vitamin C (1000-1500mg)  reduces cortisol 15-25% after intense exercise (Peters et al., 2001)  
• Result: better recovery , less muscle catabolism 

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🦠 Immune System (For Everyone)

Prevention of the common cold

• Meta-analysis Hemilä & Chalker, 2013 (Cochrane Database) :
  • General population : Vitamin C does not prevent colds, but reduces life by 8% (adults) e 14% (children)    
  • Athletes and people under physical stress : -50% incidence of colds with regular supplementation (200-1000mg/day)  
• Therapeutic dosage : 1000-2000mg/day at the first symptoms can reduce severity

Leukocyte support

• Vitamin C accumulates  in leukocytes (white blood cells) in concentrations 10-100 times higher than in plasma
• Improve function : chemotaxis (movement towards pathogens), phagocytosis ('eating' bacteria), cell proliferation
• Vitamin C deficiency  → compromised immunity

Epithelial barrier

• Skin and mucous membranes  (nose, throat, lungs) are the first line of defense
• Vitamin C supports barrier integrity  epithelial via collagen synthesis
• Result: fewer pathogens enter in the body  

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💆 Skin, Anti-Aging and Beauty

Collagen Synthesis for Young Skin

• Collagen constitutes ~75% of the dry weight of the skin
• With age, collagen synthesis decreases ~1% per year after 20 years  
• Vitamin C stimulates fibroblasts  to produce collagen
• Study Pullar et al., 2017 (Nutrients) : vitamin C supplementation improves skin elasticity e reduces wrinkles   

Protection from UV damage and pollution

• Free radicals from UV, pollution, smoke  damage the skin (premature aging, blemishes)
• Vitamin C neutralizes free radicals  and prevents photoaging
• It does NOT replace sunscreen , but it is complementary

Lightening Hyperpigmentation

• Vitamin C inhibits tyrosinase  (enzyme that produces melanin)
• Help reduce dark spots and even out skin tone  
• Enhanced effect if topical + oral use combined  

Healing Wounds

• Collagen is essential  for tissue repair
• Vitamin C deficiency → slow healing, wounds reopening (historical scurvy)
• Optimized integration healing times post-surgery, burns, abrasions  

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❤️ Cardiovascular Health

Blood Pressure Reduction

• Meta-analysis Juraschek et al., 2012 (American Journal of Clinical Nutrition) :
  • Vitamin C supplementation (500-2000mg/day) reduces systolic blood pressure of ~3.8 mmHg e diastolic of ~1.5 mmHg    
• Modest effect but significant in hypertensives  

Improved endothelial function

• The endothelium  (lining blood vessels) produces nitric oxide (NO) for vasodilation  
• Vitamin C protects NO  from oxidative degradation
• Improves flow-mediated dilation (FMD) : marker of vascular health

Reduction of oxidized LDL

• Oxidized LDL  ("bad" cholesterol damaged by free radicals) e atherogenic (cause plaques)  
• Vitamin C prevents the oxidation of LDL
• Study Salonen et al., 1991 : Vitamin C reduces LDL oxidation

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🧠 Cognitive function and mood

Neurotransmitters

• Serotonin  (mood, sleep): vitamin C is a cofactor for the conversion of tryptophan → serotonin
• Norepinephrine  (attention, vigilance): synthesis requires vitamin C
• Dopamine  (motivation, reward): synthesis supported by vitamin C

Neuronal Protection

• The brain  it has a high metabolism and produces many free radicals
• Vitamin C (water-soluble antioxidant)  protects neurons from oxidative stress
• Deficiency associated with cognitive decline and dementia  

Fatigue Reduction

• Subclinical deficiency  of vitamin C causes fatigue, irritability
• Supplementation restores  energy and vitality in people with low levels

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How and when to take vitamin C

Recommended Dosage:

1 capsule per day  (1000mg) with a meal

How to Hire:

• With food : improves gastric tolerability (vitamin C is acidic)
• With a glass of water  (200-250ml)
• Swallow whole : Do not open or chew capsule

Optimal Timing:

🌅 BREAKFAST (Recommended #1)

• Better absorption  on a full stomach
• Energy support  for the day
• Antioxidant protection  from daily stress

🍽️ LUNCH OR DINNER (Alternative)

• Any main meal is fine
• Important : hire daily at the same time for consistency  

⚠️ NOT ON AN EMPTY STOMACH

• Vitamin C is acidic  (pH ~2-3 in solution)
• It can cause gastric disorders in sensitive people if taken on an empty stomach  
• Solution : always with food

Dose Division (Optional for High Doses)

If hired >1000mg/day (e.g. during a cold):  

• Better to divide  in 2-3 doses (e.g. 500mg x 2 or 333mg x 3)
• Why : the absorption of vitamin C is saturable : 
  • At 200mg: ~100% absorbed
  • At 1000mg: ~70-75% absorbed
  • At 2000mg: ~50% absorbed
• Dividing doses : maximize total absorption

Example :

• Breakfast : 1 capsule (1000mg)
• Or if you have another supplement with vitamin C: Breakfast 500mg+ Dinner 500mg    

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Who is Vitamin C for?

✅ Ideal For:

🏋️ Sportsmen and Athletes

• Reduction of oxidative stress from training
• Prevention of respiratory infections (overtraining)
• Support collagen synthesis (tendons, ligaments)
• Post-workout cortisol reduction

🤒 Who Gets Sick Often

• Frequent colds (3+ per year)
• Weak immune system
• Winter period (little flu)
• Prevention of seasonal ailments

💆Who Wants Healthy and Anti-Aging Skin

• Wrinkle reduction and photoaging
• Elasticity and luminosity of the skin
• Lightening of dark spots
• Pollution/smoke protection

🚬 Smokers and Ex-Smokers

• Smokers need +35mg vitamin C/day  (WHO)
• Smoking generates enormous amounts of free radicals
• Accelerated vitamin C depletion
• Protection of the lungs and cardiovascular system

💼 Stressed people

• Chronic stress depletes vitamin C (adrenal glands)
• Support stress hormone production
• Reduction of mental fatigue
• Mood improvement

🌱 Vegetarians and Vegans

• Vitamin C increases the absorption of plant iron  (up to +300%)
• Crucial to prevent anemia (vegetable iron less bioavailable)
• Take with meals rich in iron (legumes, spinach, fortified cereals)

⏱️ Over 50

• Collagen synthesis decreases with age
• Immune system weakens (immunosenescence)
• Greater risk of cardiovascular disease
• Joint and skin support

🌏Who Lives in Polluted Cities

• Air pollution generates free radicals
• Lung and respiratory protection
• Support immune system against toxins

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Warnings and contraindications

⚠️ General Warnings:

• Supplements they do not replace a varied and balanced diet  
• Do not exceed  the recommended daily dose unless medically indicated
• Keep out of reach of children  under 3 years
• Store  in a cool, dry place (15-25°C), away from light and humidity
• keep well  the container after each use

🚫 Contraindications:

Kidney Stones (Oxalate)

• High doses  of vitamin C (>2000mg/day long term) can increase urinary oxalate
• Risk : formation of calcium oxalate stones (in predisposed people)
• If you have a history of kidney stones : consult your doctor, limit to 500-1000mg/day

Hemochromatosis (Iron Overload)

• Vitamin C increases iron absorption  (beneficial for most, problematic for hemochromatosis)
• Hemochromatosis = genetic disease : excessive accumulation of iron in the organs
• If you suffer from hemochromatosis : avoid vitamin C or consult a doctor  

G6PD deficiency (Favism)

• G6PD = enzyme  which protects red blood cells from oxidative stress
• G6PD deficiency : genetic condition (municipality in the Mediterranean, Africa, Asia)
• High doses of vitamin C  (>1000mg) can theoretically cause hemolysis (rupture of red blood cells)  
• If you have G6PD deficiency : Consult a doctor before using

Chronic renal failure

• Diseased kidneys  do not properly eliminate excess vitamin C and metabolites (oxalate)
• Risk of accumulation and complications
• Consult nephrologist  before using

Pregnancy and Breastfeeding

• Vitamin C is safe  during pregnancy/breastfeeding a physiological doses (RDA: 85-120mg/day)  
• High doses  (>1000mg/day): safety not fully established
• Consult gynecologist/midwife  before taking megadoses

Pharmacological interactions

💊 Anticoagulants (Warfarin) 

• High doses of vitamin C  (>1000mg/day) can theoretically reduce the effectiveness of warfarin 
• Mechanism: Vitamin C degrades warfarin or interferes with metabolism
• Consult your doctor , monitor INR

💊 Chemotherapeutics 

• Controversy : Vitamin C might protect tumor cells from chemo (reduce oxidative stress)  
• Other studies: no interference or even synergy
• Consult oncologist  absolutely before using during chemo

💊 Statin (Cholesterol Drugs) 

• Minimal interaction, generally safe
• Some studies: Vitamin C can reduce statin-induced oxidative stress (beneficial)

💊 Aspirin 

• Chronic use of aspirin can reduce vitamin C levels 
• Useful supplementation if you use aspirin long term

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Side Effects (Rare)

✅ Vitamin C is very safe for healthy people at doses up to 2000mg/day.  

Possible mild effects  a high doses (>1000mg):  

❌Disorders Gastrointestinal 

• Abdominal cramps
• Diarrhea (osmotic effect: vitamin C draws water into the intestine)
• Nausea
• Solution : reduce the dose or divide into 2-3 daily intakes

❌ Kidney stones (Rare)  

• Only in predisposed people with chronic use of very high doses (>2000mg/day)
• Solution : drink at least 2L water/day, limit to 1000mg/day

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Frequently Asked Questions (FAQ)

1. Does vitamin C prevent colds?

Answer :

• General population : NO, it does not prevent colds. BUT it reduces the duration of 8-14% if taken regularly.  
• Athletes and people subjected to physical stress : YES, reduces the incidence of colds by 50% with preventive supplementation (200-1000mg/day).  
• Treatment : hire 1000-2000mg/day at the first symptoms can reduce duration and severity.  

Conclusion : useful for prevention in athletes and as an early treatment for everyone.

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2. Is 1000mg per day safe?

✅ Yes, absolutely . 

• European Upper Limit (UL). : 1000mg/day (without problems)
• US maximum limit : 2000 mg/day
• Long-term studies : 1000-2000mg/day safe for months/years in healthy people
• Excesses eliminated  with urine (water soluble)

⚠️ Exceptions: kidney stones, hemochromatosis, G6PD deficiency (see Contraindications).

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3. Is natural or synthetic vitamin C better?

Answer : No difference at the molecular level.  

• Ascorbic acid  (synthetic) = identical with natural ascorbic acid (from fruit)  
• Bioavailability : same
• Effectiveness : same
• Some studies  suggest that natural vitamin C in food contains bioflavonoids (e.g. rutin) which enhance the effects, but the difference is minimal  

Verdict : synthetic ascorbic acid (like this supplement) is effective, safe and economical . Natural vitamin C from fruit is excellent but not superior. 

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4. Can I take vitamin C every day?

✅ Yes, in fact it is recommended . 

• Vitamin C is water soluble : does not accumulate, excesses eliminated daily
• Body supplies last only 2-3 weeks  without contribution
• Daily use  maintains constant optimal plasma levels
• Safe for continuous use  at 1000mg/day indefinitely

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5. When to see results?

It depends on the goal:

• Immune system : 2-4 weeks of regular supplementation (optimized plasma levels)  
• Skin (collagen) : 6-12 weeks for visible improvements (elasticity, wrinkles)  
• Sports recovery : immediate effect on oxidative stress, but cumulative benefits in 4-8 weeks 
• Cold : if taken ai first symptoms , reduces the duration within 24-48h 

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6. Does Vitamin C cause kidney stones?

⚠️ Controversial , but risky very low in sane people.   

• Theoretical mechanism : part of vitamin C is metabolised into oxalate → excess oxalate can form stones
• Meta-analysis Fink et al., 2013 : no increased risk calculated with supplementation <2000mg/day  
• Case-control studies : slight increased risk only in men with history of calculations who take >1000mg/day for years  
• Women : no increased risk demonstrated

Conclusion : 1000mg/day is safe for the most part. If you have history of calculations : drink lots of water and consult a doctor.   

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7. Is ascorbic acid or ascorbate (buffered) better?

Ascorbic acid  (this product):

• ✅ Most common and studied form 
• ✅ Cheap 
• ✅ Highly bioavailable 
• ⚠️ Acid (low pH): may irritate the sensitive stomach  

Ascorbate (buffered)  (e.g. sodium ascorbate, calcium, magnesium):

• ✅ Less acidic : better gastric tolerability 
• ✅ Provides minerals (sodium, calcium, magnesium)  
• ⚠️ More expensive 
• ⚠️ Less studied

Verdict : ascorbic acid it is gold standard. Ascorbate only if gastric problems with acid.  

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8. Can I combine with other supplements?

✅ Yes, many positive synergies : 

Vitamin C + Iron : ✅✅✅ HIGHLY RECOMMENDED 

• Increases iron absorption by +300%
• Ideal for vegetarians, anemics

Vitamin C + Collagen/Gelatine : ✅✅ EXCELLENT 

• Maximizes collagen synthesis
• Benefit joints, skin, tendons

Vitamin C + Vitamin E : ✅✅ SYNERGISTIC 

• Vitamin C regenerates oxidized vitamin E
• Enhanced antioxidant protection

Vitamin C + Zinc : ✅GOOD 

• Both support immunity
• Common stack for prevention of colds

Vitamin C + Multivitamin : ✅OK 

• Check that multi does not already contain 1000mg vitamin C (avoid excesses >2000mg/day)

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9. Does vitamin C make you fat?

❌ No, absolutely . 

• Zero calories  (like all vitamins)
• Does not affect appetite  or metabolism in a way that causes weight gain
• Indeed, some studies suggest that the shortage of vitamin C is associated with greater body fat (correlation, not causation)    

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10. Vitamin C and sport: before or after training?

Dosage of vitamin C for sports :

📊 Conflicting evidence : 

• Some studies : megadoses of vitamin C (1000mg) just before/during training could reduce adaptations (mitochondria, strength) blocking "good" oxidative stress (hormesis)    
• Other studies : No negative effects on adaptations
• Consent : one moderate dose (200-500 mg) e not immediately pre/intra-workout , no problem   

Practical recommendation :

• ✅ Take in the morning for breakfast (away from training)  
• ✅ O in the evening for dinner (if you train in the morning/afternoon)  
• ⚠️ To be avoided : 1000mg immediately pre-workout or intra-workout 
• ✅ Post-workout (2-3 hours later): Generally safe for recovery  

Note : the controversy concerns acute megadoses (>1000mg) specific for the moment. The hiring daily in the morning from 1000mg is safe and does not interfere with adaptations.      

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Information

📦 Format:

• 90 capsules
• 90 servings  (1 capsule = 1 serving)
• Duration : 3 months (1 capsule/day)

💊 Capsule Type:

• Hard capsule  (check whether gelatin or vegetable HPMC on the label)
• Easy to swallow

🏭 Production:

• Certified factory : GMP, ISO 22000, HACCP
• Quality controls : purity and potency analysis
• Lot and expiration : printed on packaging

♻️ Packing:

• Resealable plastic bottle
• Full information label
• Tamper-proof security seal

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Conclusion

Vitamin C  it is one of the most important micronutrients for:

✅ Immune system enhanced (-30-50% colds in athletes) ✅ Powerful antioxidant (cellular protection) ✅ Collagen synthesis (skin, joints, tendons) ✅ Iron absorption (+300% bioavailability) ✅ Sports recovery (oxidative stress, cortisol) ✅ Cardiovascular health (pressure, endothelium) ✅ Mood and energy (neurotransmitters)  

With 1000mg per capsule e 90 servings , this supplement provides 3 months of complete daily support at an affordable price.     

It's not just vitamin C - it's the foundation for optimal health, immunity and performance.

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📦 90 capsules = 3 months 💊 1000mg pure vitamin C 🦠 Enhanced immune system 💆 Skin, collagen and anti-aging 💪 Sports recovery support

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