PlainVitamins

Silica Complex

by NOW · tablet or pill · 180 tablets

  • On the market (NIH)
  • UPC 7 33739 01492 4
  • DSLD label 314075
  • Serving 1 tablet
  • 180 servings

Silica Complex by NOW lists 6 ingredients, 6 with an amount per serving of 1 tablet, such as 50 mg of calcium, 5 mg of zinc, 2 mg of manganese and 575 mg of horsetail extract. Its current label entered the NIH Dietary Supplement Label Database on July 25, 2024.

What is in Silica Complex?

Each row as the label prints it, per serving of 1 tablet. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Silica Complex: Supplement Facts rows against the market (DSLD label 314075, January 2026 release)
IngredientAmount% DVAmong products listing it
Calciumas Calcium Citrate50 mg4%Calcium in Silica Complex against 17,831 products50 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg50 mg

72% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 150 mg.

Zincas Zinc Amino Acid Chelate5 mg45%Zinc in Silica Complex against 13,186 products5 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg5 mg

72% of 13,186 products listing zinc give more (median 11 mg). Per day at the most servings: 15 mg.

Manganeseas Manganese Amino Acid Chelate2 mg87%Manganese in Silica Complex against 7,016 products2 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg2 mg

38% of 7,016 products listing manganese give more (median 2 mg). Per day at the most servings: 6 mg.

Horsetail extract575 mgHorsetail in Silica Complex against 519 products575 mg per serving; the middle half of products list 20 mg to 200 mg, the median 67 mg.575 mg

Higher than 91% of 519 products listing horsetail (median 67 mg). Per day at the most servings: 1,725 mg.

Silicaas Horsetail Extract40 mgSilicon in Silica Complex against 1,220 products40 mg per serving; the middle half of products list 2 mg to 10.5 mg, the median 4 mg.40 mg

Higher than 91% of 1,220 products listing silicon (median 4 mg). Per day at the most servings: 120 mg.

Boronas Boron Amino Acid Chelate1 mgBoron in Silica Complex against 3,339 products1 mg per serving; the middle half of products list 0.3 mg to 2 mg, the median 1 mg.UL 20 mg1 mg

42% of 3,339 products listing boron give more (median 1 mg). Per day at the most servings: 3 mg.

Source: NIH ODS Dietary Supplement Label Database, label 314075 (entered July 25, 2024), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • Its 575 mg of horsetail is higher than 91% of the 519 horsetail products that print an amount; 45 list more.
  • Its 40 mg of silica (filed by NIH under silicon) is higher than 91% of the 1,220 silicon products that print an amount; 90 list more.

The NIH database records 1 to 3 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

The products whose ingredient lists overlap most with Silica Complex's, rare ingredients counting for more.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Suggested Usage: Take 1 tablet 1 to 3 times daily, preferably with food.
Warnings
Caution: For adults only.
Not recommended for pregnant/nursing women. Consult physician if taking medication (including diuretics), or have a medical condition (especially liver, kidney, heart dysfunction).
Keep out of reach of children.
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Allergens and what it does not contain
Non-GMO
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.
Storage
Store in a cool, dry place after opening.

Source: label statements in DSLD label 314075.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Stearic Acid, Hydroxypropyl Cellulose, Croscarmellose Sodium, Vegetarian Coating.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GMP Quality Assured; Triangle K (Kosher).

How many labels does Silica Complex have?

9 labels are on file under this name since December 24, 2013: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 314075 (current) Entered July 25, 2024 · on the market · 180 tablets · UPC 7 33739 01492 4
  2. Label 204992 Entered July 24, 2019 · on the market · 90 tablets · UPC 7 33739 01490 0
  3. Label 77591 Entered December 22, 2017 · off the market February 12, 2024 · 180 tablets · UPC 7 33739 01492 4
  4. Label 72176 Entered March 24, 2017 · off the market December 6, 2018 · 90 tablets · UPC 7 33739 01490 0
  5. Label 70722 Entered February 24, 2017 · off the market June 28, 2017 · 180 tablets · UPC 7 33739 01492 4
  6. Label 52826 Entered October 22, 2015 · off the market November 30, 2016 · 180 tablets · UPC 7 33739 01492 4
  7. Label 52825 Entered October 22, 2015 · off the market March 7, 2017 · 90 tablets · UPC 7 33739 01490 0
  8. Label 28298 Entered December 24, 2013 · off the market September 30, 2015 · 180 tablets · UPC 7 33739 01492 4
  9. Label 28289 Entered December 24, 2013 · off the market September 30, 2015 · 90 tablets · UPC 7 33739 01490 0

DSLD also links this label to: Silica Complex 500 mg - 8% Extract (package size difference, same product), Silica Complex 500 mg - 8% Extract (image difference, same product).

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names NOW FOODS (manufacturer), Bloomingdale, IL. All NOW products.

Where next?