| Ingredient | Amount | % DV% Daily Value — how much of the recommended daily intake one serving provides, based on a 2,000 calorie diet. 100% = full daily need. Values over 100% are common for water-soluble vitamins (B, C) and generally safe. Values over 200% are highlighted. |
|---|---|---|
| Calories | 25 {Calories} | — |
| Vitamin D3 | 333 IU | 83% |
| Thiamine | 7 mg | 467% |
| Vitamin B6 | 10 mg | 500% |
| Folic Acid | 300 mcg | 75% |
| Vitamin B12 | 10 mcg | 167% |
| Biotin | 1995 mcg | 665% |
| Iodine | 150 mcg | 100% |
| Zinc | 4 mg | 27% |
| Selenium | 89 mcg | 127% |
| Copper | 0.28 mg | 14% |
| Manganese | 0.87 mg | 44% |
| Chromium | 35 mcg | 29% |
| Molybdenum | 58 mcg | 77% |
| Choline Bitartrate | 214 mg | — |
| Alpha Lipoic Acid | 200 mg | — |
| Bacopa extract | 200 mg | — |
| Soy Lecithin | 200 mg | — |
| Acetyl L-Carnitine | 150 mg | — |
| Bilberry extract | 150 mg | — |
| Green Tea extract | 150 mg | — |
| Passionflower extract | 150 mg | — |
| Rhodiola extract | 150 mg | — |
| Schisandra extract | 150 mg | — |
| Quercetin | 150 mg | — |
| D-Phenylalanine | 149 mg | — |
| Betain HCL | 148 mg | — |
| L-Carnosine | 148 mg | — |
| L-Carnitine L-Tartrate | 147 mg | — |
| Ginkgo extract | 100 mg | — |
| Hops | 100 mg | — |
| Milk Thistle extract | 100 mg | — |
| Pomegranate extract | 100 mg | — |
| L-Tyrosine | 100 mg | — |
| L-Valine | 100 mg | — |
| 5-HTP | 99 mg | — |
| L-Glutamine | 99 mg | — |
| L-Histidine Hydrochloride | 99 mg | — |
| Inositol | 98 mg | — |
| SAMe | 76 mg | — |
| Grape seed extract | 60 mg | — |
| Amylase | 50 mg | — |
| Bromelain | 50 mg | — |
| L-Threonine | 50 mg | — |
| Trans-Resveratrol | 25 mg | — |
| Phosphatidyl Serine | 20 mg | — |
| Piperine | 19 mg | — |
| Vinpocetine | 14 mg | — |
| Huperzine A | 200 mcg | — |
| Lithium | 61 mcg | — |
Other ingredients: Microcrystalline Cellulose, Enteric Coating, Dextrose, Silicon Dioxide, Sodium Carboxymethyl Cellulose, Magnesium Stearate, Dicalcium Phosphate, Maltodextrin
This score evaluates label quality — dosage disclosure, transparency, cleanliness of inactive ingredients, and formula composition. It does not measure clinical efficacy, bioavailability, or third-party testing. Read full methodology
Same category, higher SupplementScore. Based on dosage transparency, label cleanliness, and formula quality.
The research summaries below are about the ingredients in general, drawn from published studies that often use different doses, forms, and populations than this product. A "strong" evidence rating for an ingredient does not mean this product will produce that effect — studied doses may be significantly higher or lower than what is contained here. Always verify doses against the Supplement Facts table above.
Zinc is a cofactor for over 300 enzymes involved in immune cell development and function. Supplementation may reduce duration of common cold symptoms, particularly as lozenges. Essential for maintaining immune barrier integrity.
Essential for skin integrity and wound repair processes.
Essential for red blood cell formation. Deficiency causes megaloblastic anemia, confirmed by decades of clinical evidence.
Involved in myelin synthesis and nerve function. Adequate B12 status supports neurological health, particularly in older adults and vegans.
Cofactor in energy production pathways, but supplementation only helps if deficient.
Involved in neurotransmitter synthesis including serotonin and dopamine. Cofactor for over 100 enzyme reactions.
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All scores are algorithmically generated from publicly available label data (NIH Dietary Supplement Label Database) and reflect label quality — not clinical efficacy, safety, or product quality. This page is not affiliated with or endorsed by Xtendlife. If you represent this brand and believe any information is inaccurate, please contact us for a correction. Read full methodology
Alternatives are selected from the same category (Vitamin D) with a higher overall score. This is not a recommendation — always verify ingredients and dosages match your needs.
B6 is a cofactor in the transsulfuration pathway, converting homocysteine to cysteine. This is a separate pathway from the B12/folate remethylation route.
Limited evidence. May help in cases of biotin deficiency but most people get adequate amounts from diet.
Essential cofactor for carboxylases involved in gluconeogenesis, fatty acid synthesis, and amino acid catabolism.
Essential cofactor for pyruvate dehydrogenase and other enzymes in carbohydrate metabolism.
Adequate folate intake before and during early pregnancy reduces risk of neural tube defects. This is one of the most well-established findings in nutrition.
Essential cofactor for nucleotide synthesis and cell division.
Adequate folate intake before and during early pregnancy reduces risk of neural tube defects. This is one of the most well-established findings in nutrition.
Essential cofactor for nucleotide synthesis and cell division.
Essential for calcium absorption. Deficiency leads to rickets in children and osteomalacia in adults — a well-established causal relationship.
May reduce risk of respiratory infections. Active area of research.
Some association between low vitamin D levels and depression, but evidence is inconsistent.
No FDA warnings or recalls on file.