Life Extension Prenatal Advantage
vs
NOW Foods C-1000 Zinc & D-3
Supplement Comparison

  • Vitamin D: NOW Foods C-1000 Zinc & D-3 has 2.0× more
  • Vitamin C: NOW Foods C-1000 Zinc & D-3 has 8.3× more
  • Zinc: NOW Foods C-1000 Zinc & D-3 has 15% more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 43 nutrients compared
Bar chart: per-serving label amounts and listed forms for Life Extension Prenatal Advantage vs NOW Foods C-1000 Zinc & D-3.

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Frequently asked questions

Which active ingredients does Life Extension Prenatal Advantage have?

  • Vitamin A appears as Beta Carotene
  • Vitamin C appears as Calcium Ascorbate and Niacinamide Ascorbate
  • Vitamin D appears as Cholecalciferol (D3)
  • Vitamin E appears as d-Alpha Tocopheryl Acid Succinate
  • Vitamin K appears as Vitamin K1 Phytonadione
  • Vitamin B1 (Thiamin) appears as Thiamin HCl
  • Vitamin B2 (Riboflavin) appears as Riboflavin 5-Phosphate Sodium
  • Vitamin B3 (Niacin) appears as Niacinamide
  • Vitamin B6 (Pyridoxine) appears as Pyridoxal 5-Phosphate
  • Vitamin B9 (Folate) appears as Folic Acid
  • Vitamin B12 (Cobalamin) appears as Methylcobalamin
  • Vitamin B7 (Biotin)
  • Vitamin B5 (Pantothenic Acid) appears as Calcium Pantothenate
  • Choline
  • Iron appears as Ferrous Fumarate
  • Iodine appears as Potassium Iodide
  • Zinc appears as L-OptiZinc Monomethionine
  • Selenium appears as SelenoExcell
  • Copper appears as TRAACS Copper Bisglycinate (Albion)
  • Manganese appears as Manganese Citrate
  • Chromium
  • Molybdenum
  • Potassium
  • Docosahexaenoic Acid (DHA)
  • Lutein
  • Zeaxanthin

Which active ingredients does NOW Foods C-1000 Zinc & D-3 have?

  • Vitamin C appears as Ascorbic Acid
  • Vitamin D appears as Cholecalciferol (D3)
  • Zinc appears as Zinc Bisglycinate

Which categories do Life Extension Prenatal Advantage and NOW Foods C-1000 Zinc & D-3 belong to?

  • Fish Oil and Omega-3
  • Prenatal Formula
  • Single Mineral
  • Single Vitamin

What health concerns do Life Extension Prenatal Advantage and NOW Foods C-1000 Zinc & D-3 address?

  • Brain, Focus & Cognitive Function
  • Eye Health
  • General Health
  • Pregnancy Support
  • Women's Health
  • Antioxidant Support
  • Immune System Support
  • Joint & Bone Health

Which product has a higher amount of Vitamin D per serving?

  • NOW Foods C-1000 Zinc & D-3 has the highest total amount of Vitamin D: 2000 IU per serving

Which product has a higher amount of Vitamin C per serving?

  • NOW Foods C-1000 Zinc & D-3 has the highest total amount of Vitamin C: 1000 mg per serving

Which product has a higher amount of Zinc per serving?

  • NOW Foods C-1000 Zinc & D-3 has the highest total amount of Zinc: 15 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Life Extension Prenatal Advantage: 4 softgels
    • NOW Foods C-1000 Zinc & D-3: 1 capsule
  • Vitamin A
    • This supplement has 1300 mcg RAE
    • Recommended Dietary Allowance in men: 900 mcg RAE
    • Recommended Dietary Allowance in women: 700 mcg RAE
    • Tolerable Upper Intake Level: 3000 mcg RAE
  • Vitamin C
    • This supplement has 120 mg
    • Recommended Dietary Allowance in men: 90 mg
    • Recommended Dietary Allowance in women: 75 mg
    • Tolerable Upper Intake Level: 2000 mg
  • Vitamin D
    • This supplement has 1000 IU
    • Recommended Dietary Allowance in men: 600 IU
    • Recommended Dietary Allowance in women: 600 IU
    • Tolerable Upper Intake Level: 4000 IU
  • Vitamin E
    • This supplement has 15 mg
    • Recommended Dietary Allowance in men: 15 mg
    • Recommended Dietary Allowance in women: 15 mg
    • Tolerable Upper Intake Level: 1000 mg
  • Vitamin K
    • This supplement has 90 mcg
    • Adequate Intake in men: 120 mcg
    • Adequate Intake in women: 90 mcg
    • Tolerable Upper Intake Level: Not established
  • Vitamin B1 (Thiamin)
    • This supplement has 1.4 mg
    • Recommended Dietary Allowance in men: 1.2 mg
    • Recommended Dietary Allowance in women: 1.1 mg
    • Tolerable Upper Intake Level: Not established
  • Vitamin C
    • This supplement has 1000 mg
    • Recommended Dietary Allowance in men: 90 mg
    • Recommended Dietary Allowance in women: 75 mg
    • Tolerable Upper Intake Level: 2000 mg
  • Vitamin D
    • This supplement has 2000 IU
    • Recommended Dietary Allowance in men: 600 IU
    • Recommended Dietary Allowance in women: 600 IU
    • Tolerable Upper Intake Level: 4000 IU
  • Zinc
    • This supplement has 15 mg
    • Recommended Dietary Allowance in men: 11 mg
    • Recommended Dietary Allowance in women: 8 mg
    • Tolerable Upper Intake Level: 40 mg

Last updated: February 12, 2026

  • Sources & Methodology: Nutrient data and forms are taken directly from Supplement Facts labels. Reviewed and standardized by the VIOscan Research Team. Learn more on the Methodology page.
  • We show the Recommended Dietary Allowance (RDA) when available. If no RDA exists, we show the Adequate Intake (AI). Tolerable Upper Intake Levels (UL) are used for upper limits. Unless otherwise noted, RDAs shown correspond to healthy adults aged 19–50 years and are sex-specific. Separate values exist for 51–70 years and >70 years, and pregnancy and lactation are excluded. All values come from the Dietary Reference Intakes (DRIs) published by the National Academies of Sciences, Engineering, and Medicine (NASEM), Food and Nutrition Board (FNB).
  • Transparency: We’re funded by our users. We don’t have sponsors or affiliate links, and we don’t sell supplements.
  • Editorial standards: we provide independent, impartial and objective data analysis.
  • This analysis is for educational purposes only. It is not a substitute for medical advice.
  • Questions? Read our Frequently Asked Questions or contact us, we’re here to help.
  • See an error? Report it through our Contact page.
  • Author: VIOscan Research Team