🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 46% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

6 Tablet(s) Serving Size
20 Servings
Other Combinations Product Type
46% Evidence Coverage

Supplement Facts — Evidence Check

Calories
20 Calorie(s)
Total Fat
0.5 Gram(s) (1% DV)
Total Carbohydrates
2 Gram(s) (1% DV)
Vitamin C
143 mg (238% DV)
59 IU (197% DV)
✅ 2.6× RDA — within safe limits 📚 177 studies (Tier A: 3, B: 90)
RDA 15mg This product: 39.53mg UL 1000mg
49 mcg (61% DV)
✅ Within RDA (0.4× RDA of 0.12 mg) 📚 273 studies (Tier A: 9, B: 175)
RDA 0.12mg This product: 0.049mg
1.1 mg (58% DV)
✅ Within RDA (0.8× RDA of 1.3 mg) 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 1.1mg
6.8 mg (340% DV)
📊 5.2× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 6.8mg UL 100mg
323 mcg (81% DV)
✅ Within RDA (0.8× RDA of 0.4 mg) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 0.323mg UL 1.0mg
2.5 mcg (42% DV)
✅ Within RDA (1.0× RDA of 0.0024 mg) 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.0025mg
45 mg (450% DV)
📊 9.0× RDA — above typical dose 📚 1 studies — no high-quality reviews
RDA 5mg This product: 45mg
Calcium
44 mg (4% DV)
22 mg (2% DV)
📊 Market median: 99.0mg (503 products) 📚 12 studies (Tier A: 0, B: 3)
RDA 700mg This product: 22mg UL 4000mg
25 mg (6% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 25mg
9 mg (60% DV)
✅ Within RDA (0.8× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 9mg UL 40mg
120 mcg (171% DV)
✅ 2.2× RDA — within safe limits 📚 172 studies (Tier A: 0, B: 67)
RDA 0.055mg This product: 0.12mg UL 0.4mg
110 mcg (92% DV)
📊 3.1× RDA — above typical dose 📚 197 studies (Tier A: 1, B: 55)
RDA 0.035mg This product: 0.11mg
449 mg
📊 Market median: 500.0mg (180 products) 📚 5 studies (Tier A: 0, B: 1)
This product: 449mg
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 250mg
📊 Market median: 500.0mg (234 products) 📚 95 studies (Tier A: 0, B: 35)
This product: 250mg
Arjuna bark extract
250 mg
📊 Market median: 260.0mg (249 products) 📚 156 studies (Tier A: 4, B: 61)
This product: 200mg
MSM
200 mg
📊 Market median: 1000.0mg (2 products)
This product: 200mg
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 198mg
198 mg
📊 Market median: 500.0mg (193 products) 📚 7 studies — no high-quality reviews
This product: 198mg
Hesperidin
147 mg
📊 Market median: 100.0mg (284 products) 📚 10 studies (Tier A: 0, B: 4)
This product: 120mg
✅ Within RDA (0.2× RDA of 550 mg) 📚 36 studies (Tier A: 1, B: 7)
RDA 550mg This product: 101mg UL 3500mg
📊 Market median: 200.0mg (198 products) 📚 6 studies — no high-quality reviews
This product: 100mg
100 mg
📊 Market median: 200.0mg (136 products) 📚 3 studies — no high-quality reviews
This product: 100mg
Butcher's Broom root extract
100 mg
📊 Market median: 333.0mg (166 products) 📚 9 studies (Tier A: 0, B: 2)
This product: 100mg
100 mg
📊 Market median: 60.0mg (94 products) 📚 13 studies (Tier A: 0, B: 7)
This product: 100mg
L-Valine
100 mg
Jujube seed extract
100 mg
N-Acetyl L-Cysteine
98 mg
98 mg
📊 Market median: 496.0mg (192 products) 📚 20 studies — no high-quality reviews
This product: 98mg
98 mg
📊 Market median: 550.0mg (217 products) 📚 29 studies (Tier A: 0, B: 5)
This product: 98mg
📊 Market median: 120.0mg (440 products) 📚 187 studies (Tier A: 1, B: 71)
This product: 90mg
Grape skin extract
60 mg
📊 Market median: 100.0mg (70 products)
Median 100.0mg This product: 50mg
Guggul Gum extract
50 mg
L-Proline
50 mg
Red Clover leaf & stem extract
50 mg
📊 Market median: 450.0mg (254 products) 📚 240 studies (Tier A: 0, B: 100)
This product: 50mg
49 mg
📊 Market median: 500.0mg (19 products)
This product: 49mg
📊 Market median: 100.0mg (283 products) 📚 142 studies (Tier A: 1, B: 64)
This product: 39mg UL 1200mg
Piperine
28 mg
📊 Market median: 167.0mg (311 products) 📚 182 studies (Tier A: 0, B: 65)
This product: 25mg
reduced Glutathione
17 mg
Policosanol
17 mg
Lipase
10 mg
Serrazimes Protease
10 mg
Vinpocetine
4.7 mg

Other Ingredients

Microcrystalline Cellulose Enteric Coating Dextrose Maltodextrin Tripotassium Citrate Silicon Dioxide Sodium Carboxymethyl Cellulose

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Adult (18 - 50 Years) Gluten Free Dairy Free

Product Information

📋 Directions for Use

Directions For Use Adult Optimum Dose: 6 tablets per day. Adult Maintenance Dose: 4 tablets per day. Take 6 tablets first thing in the morning or split into 2 doses, in the morning and later in the day.

⚠️ Warnings & Precautions

Contains soy.

🧪 Formulation Notes

Contains soy.

Does not contain dairy, gluten, shellfish or peanuts.

Additional Information

Store in a cool, dry place.

L1015-11

Best quality guarantee Advanced formula enteric coated

Made in New Zealand

Product Details

DSLD Entry Date 2017-12-22
Product Type Other Combinations
Form Tablet or Pill
Brand Xtendlife
DSLD ID 82166
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
148 Meta Analysis
82 Systematic Review
71 Rct
62 Clinical Trial
2 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Other
1 Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
View all evidence for Vitamin C →

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