Silica Complex 500 mg - 8% Extract

by NOW · tablet or pill · 180 tablets

  • Off the market since March 2013 (NIH)
  • UPC 7 33739 01492 4
  • DSLD label 14617
  • Serving 1 tablet

Silica Complex 500 mg - 8% Extract by NOW lists 8 ingredients, 8 with an amount per serving of 1 tablet, such as 50 mg of calcium, 5 mg of zinc, 2 mg of manganese and 500 mg of horsetail extract. Its current label entered the NIH Dietary Supplement Label Database on October 25, 2012.

What is in Silica Complex 500 mg - 8% Extract?

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 500 mg - 8% Extract: Supplement Facts rows against the market (DSLD label 14617, January 2026 release)
IngredientAmount% DVAmong products listing it
Calciumas Calcium Amino Acid ChelateCalcium (Form: from Calcium Amino Acid Chelate)50 mg5%Calcium in Silica Complex 500 mg - 8% Extract 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 ChelateZinc (Form: from Zinc Amino Acid Chelate)5 mg33%Zinc in Silica Complex 500 mg - 8% Extract 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 ChelateManganese (Form: from Manganese Amino Acid Chelate)2 mg100%Manganese in Silica Complex 500 mg - 8% Extract 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 extract500 mgHorsetail in Silica Complex 500 mg - 8% Extract against 519 products500 mg per serving; the middle half of products list 20 mg to 200 mg, the median 67 mg.500 mg

Higher than 88% of 519 products listing horsetail (median 67 mg). Per day at the most servings: 1,500 mg.

Silicaas Horsetail ExtractSilica (Form: from Horsetail extract)40 mgSilicon in Silica Complex 500 mg - 8% Extract 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.

Oat Straw100 mgOats in Silica Complex 500 mg - 8% Extract against 304 products100 mg per serving; the middle half of products list 50 mg to 500 mg, the median 187.5 mg.100 mg

59% of 304 products listing oats give more (median 187.5 mg). Per day at the most servings: 300 mg.

Bentonite mineral powder10 mgBentonite in Silica Complex 500 mg - 8% Extract against 33 products10 mg per serving; the middle half of products list 25 mg to 300 mg, the median 100 mg.10 mg

76% of 33 products listing bentonite give more (median 100 mg). Per day at the most servings: 30 mg.

Boronas Boron Amino Acid ChelateBoron (Form: from Boron Amino Acid Chelate)1 mgBoron in Silica Complex 500 mg - 8% Extract 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 14617 (entered October 25, 2012), version 9.4.0. See the label on DSLD. 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 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.
  • 76% of the 33 products that print an amount of bentonite list more than its 10 mg of bentonite (median 100 mg).

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 500 mg - 8% Extract'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: As a dietary supplement, take 1 tablet 1 to 3 times daily, preferably with food. Consider taking this product in combination with NOW(R) Biotin, Hyaluronic Acid and L-Cysteine.
Allergens and what it does not contain
Contains no sugar, salt, yeast, wheat, soy, milk, egg, shellfish or preservatives.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 14617.

What else is on the label?

Other ingredients: Cellulose, Stearic Acid, Croscarmellose Sodium, Magnesium Stearate, Tablet Coating.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GMP QUALITY ASSURED.

How many labels does Silica Complex 500 mg - 8% Extract have?

2 labels are on file under this name since October 25, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 14617 (current) Entered October 25, 2012 · off the market March 22, 2013 · 180 tablets · UPC 7 33739 01492 4
  2. Label 14611 Entered October 25, 2012 · off the market March 25, 2013 · 90 tablets · UPC 7 33739 01490 0

DSLD also links this label to: Silica Complex (image difference, same product), Silica Complex (image difference, same product), Silica Complex (image difference, same product), Silica Complex (image difference, same product), Silica Complex (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?