PlainVitamins

ThyroLife Optima

by Douglas Laboratories · capsule · 90 vegetarian capsules

  • On the market (NIH)
  • UPC 3 10539 03880 2
  • DSLD label 31125
  • Serving 3 vegetarian capsules
  • 30 servings

ThyroLife Optima by Douglas Laboratories lists 33 ingredients, 33 with an amount per serving of 3 vegetarian capsules, such as 2,500 IU of vitamin A, 500 mg of vitamin C, 1,000 IU (25 mcg) of vitamin D3 and 200 IU of vitamin E. Its current label entered the NIH Dietary Supplement Label Database on March 25, 2014.

What is in ThyroLife Optima?

Each row as the label prints it, per serving of 3 vegetarian capsules. 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).

ThyroLife Optima: Supplement Facts rows against the market (DSLD label 31125, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Aas Beta-CaroteneVitamin A (Form: as natural Beta-Carotene)2,500 IU50%Vitamin A in ThyroLife Optima against 5,772 products2,500 IU per serving; the middle half of products list 2,000 IU to 5,000 IU, the median 4,000 IU.2,500 IU

59% of 5,772 products listing vitamin A give more (median 4,000 IU).

Vitamin Cas Ascorbic Acid, Magnesium AscorbateVitamin C (Form: as ascorbic acid, and magnesium ascorbate)500 mg833%Vitamin C in ThyroLife Optima against 18,583 products500 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg500 mg

Higher than 81% of 18,583 products listing vitamin C (median 100 mg).

Vitamin D3as Cholecalciferol1,000 IU (25 mcg)250%Vitamin D in ThyroLife Optima against 14,175 products25 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg25 mcg

Higher than 59% of 14,175 products listing vitamin D (median 15 mcg).

Vitamin Eas D-Alpha-Tocopheryl Succinate, Mixed TocopherolsVitamin E (Form: as D-Alpha Tocopheryl Succinate, with Mixed Tocopherols)200 IU667%Vitamin E in ThyroLife Optima against 6,459 products200 IU per serving; the middle half of products list 15 IU to 100 IU, the median 30 IU.200 IU

Higher than 82% of 6,459 products listing vitamin E (median 30 IU).

Thiamineas Thiamine HydrochlorideThiamine (Form: as Thiamine HCl)25 mg1,667%Thiamin in ThyroLife Optima against 9,830 products25 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg25 mg

Higher than 72% of 9,830 products listing thiamin (median 5 mg).

Riboflavin25 mg1,471%Riboflavin in ThyroLife Optima against 9,824 products25 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg25 mg

Higher than 75% of 9,824 products listing riboflavin (median 4 mg).

Niacinas Niacin, NiacinamideNiacin (Form: as Niacin, and Niacinamide)15 mg75%Niacin in ThyroLife Optima against 12,413 products15 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg15 mg

71% of 12,413 products listing niacin give more (median 20 mg).

Vitamin B6as Pyridoxine HydrochlorideVitamin B-6 (Form: as Pyridoxine HCl)100 mg5,000%Vitamin B6 in ThyroLife Optima against 15,277 products100 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg100 mg

Higher than 96% of 15,277 products listing vitamin B6 (median 6 mg).

Folateas L-MethylfolateFolate (Form: as L-Methylfolate (Alt. Name: Metafolin))400 mcg100%Folate in ThyroLife Optima against 7,022 products400 mcg per serving; the middle half of products list 200 mcg to 400 mcg, the median 400 mcg.400 mcg

24% of 7,022 products listing folate give more (median 400 mcg).

Vitamin B12as Methylcobalamin75 mcg1,250%Vitamin B12 in ThyroLife Optima against 14,425 products75 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg75 mcg

Higher than 60% of 14,425 products listing vitamin B12 (median 36 mcg).

Biotin250 mcg83%Biotin in ThyroLife Optima against 9,447 products250 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg250 mcg

Higher than 52% of 9,447 products listing biotin (median 200 mcg).

Pantothenic Acidas D-Calcium Pantothenate, Vitamin B5Pantothenic Acid (Form: as D-Calcium Pantothenate) (Alt. Name: Vitamin B-5)40 mg400%Pantothenic Acid (Vitamin B5) in ThyroLife Optima against 10,060 products40 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg40 mg

Higher than 70% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Iodineas Kelp120 mcg80%Iodine in ThyroLife Optima against 6,382 products120 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg120 mcg

57% of 6,382 products listing iodine give more (median 150 mcg).

Magnesiumas Magnesium Ascorbate, Magnesium OxideMagnesium (Form: as Magnesium Oxide, and Magnesium Ascorbate)200 mg50%Magnesium in ThyroLife Optima against 14,003 products200 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg200 mg

Higher than 75% of 14,003 products listing magnesium (median 86 mg).

Zincas Zinc CitrateZinc (Form: as Zinc Citrate)15 mg100%Zinc in ThyroLife Optima against 13,186 products15 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg15 mg

Higher than 56% of 13,186 products listing zinc (median 11 mg).

Seleniumas Selenium Krebs Cycle ChelateSelenium (Form: as Selenium Krebs Note: Krebs = Citrate, Fumarate, Malate, Glutarate and Succinate Complex.)100 mcg143%Selenium in ThyroLife Optima against 7,658 products100 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg100 mcg

Higher than 65% of 7,658 products listing selenium (median 55 mcg).

Copperas Copper ChelateCopper (Form: as Copper Chelate)200 mcg10%Copper in ThyroLife Optima against 6,468 products0.2 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg0.2 mg

88% of 6,468 products listing copper give more (median 1 mg).

Manganeseas Manganese SulfateManganese (Form: as Manganese Sulfate)1.5 mg75%Manganese in ThyroLife Optima against 7,016 products1.5 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg1.5 mg

64% of 7,016 products listing manganese give more (median 2 mg).

Chromiumas Chromium ChelateChromium (Form: as Chromium Chelate)100 mcg83%Chromium in ThyroLife Optima against 7,825 products100 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg100 mcg

47% of 7,825 products listing chromium give more (median 100 mcg).

Molybdenumas Molybdenum Krebs Complex40 mcg80%Molybdenum in ThyroLife Optima against 4,390 products40 mcg per serving; the middle half of products list 25 mcg to 75 mcg, the median 50 mcg.DV 45 mcgUL 2,000 mcg40 mcg

63% of 4,390 products listing molybdenum give more (median 50 mcg).

L-Taurine100 mgTaurine in ThyroLife Optima against 2,337 products100 mg per serving; the middle half of products list 110 mg to 1,000 mg, the median 500 mg.100 mg

76% of 2,337 products listing taurine give more (median 500 mg).

Spirulina100 mgBlue-Green Algae in ThyroLife Optima against 709 products100 mg per serving; the middle half of products list 100 mg to 1,000 mg, the median 500 mg.100 mg

71% of 709 products listing blue-green algae give more (median 500 mg).

Rhodiola rosea Extractas RosavinsRhodiola rosea Extract (Form: 1% Rosavins) PlantPart: root Genus: Rhodiola Species: rosea75 mgRhodiola in ThyroLife Optima against 945 products75 mg per serving; the middle half of products list 50 mg to 250 mg, the median 100 mg.75 mg

69% of 945 products listing rhodiola give more (median 100 mg).

Quercetin50 mgQuercetin in ThyroLife Optima against 1,548 products50 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.50 mg

56% of 1,548 products listing quercetin give more (median 100 mg).

Panax ginsengPanax ginseng PlantPart: root Genus: Panax Species: ginseng Note: Korean Ginseng40 mgOriental Ginseng in ThyroLife Optima against 706 products40 mg per serving; the middle half of products list 30 mg to 200 mg, the median 90 mg.40 mg

71% of 706 products listing oriental ginseng give more (median 90 mg).

L-Glutathione40 mgGlutathione in ThyroLife Optima against 717 products40 mg per serving; the middle half of products list 10 mg to 200 mg, the median 50 mg.40 mg

53% of 717 products listing glutathione give more (median 50 mg).

Alpha-Lipoic Acid40 mgAlpha Lipoic Acid in ThyroLife Optima against 2,407 products40 mg per serving; the middle half of products list 25 mg to 150 mg, the median 50 mg.40 mg

62% of 2,407 products listing alpha lipoic acid give more (median 50 mg).

Inositol40 mgInositol in ThyroLife Optima against 4,042 products40 mg per serving; the middle half of products list 10 mg to 80 mg, the median 30 mg.40 mg

Higher than 54% of 4,042 products listing inositol (median 30 mg).

Paba20 mgPABA in ThyroLife Optima against 1,610 products20 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.20 mg

61% of 1,610 products listing PABA give more (median 25 mg).

L-Glutamic Acid15 mgGlutamic Acid in ThyroLife Optima against 697 products15 mg per serving; the middle half of products list 25 mg to 364 mg, the median 80 mg.15 mg

86% of 697 products listing glutamic acid give more (median 80 mg).

Lycopene2 mgLycopene in ThyroLife Optima against 1,691 products2 mg per serving; the middle half of products list 0.5 mg to 5 mg, the median 1.2 mg.2 mg

Higher than 52% of 1,691 products listing lycopene (median 1.2 mg).

Vanadiumas Vanadium Krebs Cycle ChelatesVanadium (Form: from Vanadium Krebs Complex (Form: {Vanadium} Citrate, {Vanadium} Fumarate, {Vanadium} Malate, {Vanadium} Glutarate, and {Vanadium} Succinate))25 mcgVanadium in ThyroLife Optima against 1,744 products25 mcg per serving; the middle half of products list 10 mcg to 100 mcg, the median 25 mcg.UL 1,800 mcg25 mcg

44% of 1,744 products listing vanadium give more (median 25 mcg).

Lactobacillus acidophilus1,000,000,000 CFU

Source: NIH ODS Dietary Supplement Label Database, label 31125 (entered March 25, 2014), 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 100 mg of vitamin B6 is higher than 96% of the 15,277 vitamin B6 products that print an amount; 173 list more.
  • 88% of the 6,468 products that print an amount of copper list more than its 0.2 mg of copper (median 1 mg).

The NIH database records one serving 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 ThyroLife Optima'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, adults take 3 vegetarian capsules daily with food or as directed by your healthcare professional
Warnings
KEEP OUT OF REACH OF CHILDREN.
Tamper resistant package, do not use if outer seal is missing.
Allergens and what it does not contain
This product contains NO yeast, gluten, soy protein, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.
Storage
For optimal storage conditions, store in a cool, dry place.(59(0)-77(0)F/15(0)-25(0)C) (35-65% relative humidity)

Source: label statements in DSLD label 31125.

What else is on the label?

Other ingredients: Hydroxypropyl Methylcellulose, Cellulose, Vegetable Stearate, Silica.

How many labels does ThyroLife Optima have?

One label is on file, entered on March 25, 2014.

  1. Label 31125 (current) Entered March 25, 2014 · on the market · 90 vegetarian capsules · UPC 3 10539 03880 2

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

Who makes it?

The label names Douglas Laboratories (manufacturer), Pittsburgh, PA. All Douglas Laboratories products.

Where next?