PlainVitamins

Mega 100

by Nature's Best · tablet or pill · 60 tablets

  • Off the market since August 2024 (NIH)
  • DSLD label 206622
  • Serving 1 tablet
  • 60 servings

Mega 100 by Nature's Best lists 32 ingredients, 32 with an amount per serving of 1 tablet, such as 100 mcg of biotin, 400 mcg of folate, 100 mcg of vitamin B12 and 100 mg of vitamin B6. Its current label entered the NIH Dietary Supplement Label Database on September 24, 2019.

What is in Mega 100?

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).

Mega 100: Supplement Facts rows against the market (DSLD label 206622, January 2026 release)
IngredientAmount% DVAmong products listing it
Biotin100 mcg33%Biotin in Mega 100 against 9,447 products100 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg100 mcg

61% of 9,447 products listing biotin give more (median 200 mcg).

Folate400 mcg100%Folate in Mega 100 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 B12100 mcg1,667%Vitamin B12 in Mega 100 against 14,425 products100 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg100 mcg

Higher than 61% of 14,425 products listing vitamin B12 (median 36 mcg).

Vitamin B6as Pyridoxine HydrochlorideVitamin B6 (Form: as Pyridoxine Hydrochloride)100 mg5,000%Vitamin B6 in Mega 100 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).

Riboflavin100 mg5,882%Riboflavin in Mega 100 against 9,824 products100 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg100 mg

Higher than 96% of 9,824 products listing riboflavin (median 4 mg).

Rose Hips5 mgRose (unspecified) in Mega 100 against 195 products5 mg per serving; the middle half of products list 14.5 mg to 100 mg, the median 30 mg.5 mg

86% of 195 products listing rose (unspecified) give more (median 30 mg).

Vitamin Cas Ascorbic Acid250 mg417%Vitamin C in Mega 100 against 18,583 products250 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg250 mg

Higher than 68% of 18,583 products listing vitamin C (median 100 mg).

Rutin50 mgRutin in Mega 100 against 1,232 products50 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.50 mg

Higher than 69% of 1,232 products listing rutin (median 25 mg).

Choline Bitartrate100 mg18%*Choline in Mega 100 against 4,738 products100 mg per serving; the middle half of products list 18 mg to 100 mg, the median 40 mg.DV 550 mgUL 3,500 mg100 mg

Higher than 72% of 4,738 products listing choline (median 40 mg).

Inositol100 mgInositol in Mega 100 against 4,042 products100 mg per serving; the middle half of products list 10 mg to 80 mg, the median 30 mg.100 mg

Higher than 76% of 4,042 products listing inositol (median 30 mg).

Niacinas NiacinamideNiacin (Form: as Niacinamide)100 mg500%Niacin in Mega 100 against 12,413 products100 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg100 mg

Higher than 88% of 12,413 products listing niacin (median 20 mg). 2.9 times the adult UL a day.

Pantothenic Acidas D-Calcium PantothenatePantothenic Acid (Form: as D-Calcium Pantothenate)100 mg1,000%Pantothenic Acid (Vitamin B5) in Mega 100 against 10,060 products100 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg100 mg

Higher than 86% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Magnesiumas Magnesium OxideMagnesium (Form: as Magnesium Oxide)25 mg6%Magnesium in Mega 100 against 14,003 products25 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg25 mg

77% of 14,003 products listing magnesium give more (median 86 mg).

Betaine Hydrochloride30 mgBetaine Hydrochloride in Mega 100 against 914 products30 mg per serving; the middle half of products list 25 mg to 178 mg, the median 50 mg.30 mg

56% of 914 products listing betaine hydrochloride give more (median 50 mg).

Thiamineas Thiamine HydrochlorideThiamin (Form: as Thiamin Hydrochloride)100 mg6,667%Thiamin in Mega 100 against 9,830 products100 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg100 mg

Higher than 94% of 9,830 products listing thiamin (median 5 mg).

Copperas Copper GluconateCopper (Form: as Copper Gluconate)500 mcg25%Copper in Mega 100 against 6,468 products0.5 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg0.5 mg

68% of 6,468 products listing copper give more (median 1 mg).

Iodineas KelpIodine (Form: as Kelp)150 mcg100%Iodine in Mega 100 against 6,382 products150 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg150 mcg

15% of 6,382 products listing iodine give more (median 150 mcg).

Para-Aminobenzoic Acid100 mgPABA in Mega 100 against 1,610 products100 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.100 mg

Higher than 86% of 1,610 products listing PABA (median 25 mg).

Hesperidin Complex10 mg
Potassiumas Potassium ChloridePotassium (Form: as Potassium Chloride)10 mg1%Potassium in Mega 100 against 11,614 products10 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg10 mg

93% of 11,614 products listing potassium give more (median 99 mg).

L-Glutathione5 mgGlutathione in Mega 100 against 717 products5 mg per serving; the middle half of products list 10 mg to 200 mg, the median 50 mg.5 mg

85% of 717 products listing glutathione give more (median 50 mg).

Vitamin Eas DL-Alpha-Tocopheryl AcetateVitamin E (Form: as DL-Alpha Tocopheryl Acetate)150 IU500%Vitamin E in Mega 100 against 6,459 products150 IU per serving; the middle half of products list 15 IU to 100 IU, the median 30 IU.150 IU

Higher than 80% of 6,459 products listing vitamin E (median 30 IU).

Citrus Bioflavonoids50 mgFlavonoid in Mega 100 against 2,343 products50 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.50 mg

46% of 2,343 products listing flavonoid give more (median 50 mg).

Vitamin Aas Beta-CaroteneVitamin A (Form: as 100% Beta Carotene)7,500 IU150%Vitamin A in Mega 100 against 5,772 products7,500 IU per serving; the middle half of products list 2,000 IU to 5,000 IU, the median 4,000 IU.7,500 IU

Higher than 79% of 5,772 products listing vitamin A (median 4,000 IU).

Calciumas Dicalcium Phosphate DihydrateCalcium (Form: as Dicalcium Phosphate Dihydrate)44 mg4%Calcium in Mega 100 against 17,831 products44 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg44 mg

78% of 17,831 products listing calcium give more (median 115 mg).

Phosphorusas Dicalcium Phosphate DihydratePhosphorus (Form: as Dicalcium Phosphate Dihydrate)35 mg4%Phosphorus in Mega 100 against 3,786 products35 mg per serving; the middle half of products list 45 mg to 200 mg, the median 90 mg.DV 1,250 mgUL 4,000 mg35 mg

82% of 3,786 products listing phosphorus give more (median 90 mg).

L-Cysteineas L-Cysteine Hydrochloride Anhydrate25 mgCysteine in Mega 100 against 516 products25 mg per serving; the middle half of products list 30 mg to 200 mg, the median 85 mg.25 mg

76% of 516 products listing cysteine give more (median 85 mg).

Vitamin Das Cholecalciferol, Vitamin D3Vitamin D (Form: as D3 (Alt. Name: Cholecalciferol))400 IU (10 mcg)100%Vitamin D in Mega 100 against 14,175 products10 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg10 mcg

57% of 14,175 products listing vitamin D give more (median 15 mcg).

Ironas Ferrous Sulphate Dihydrate, Iron AACIron (Form: as Ferrous Sulphate Dihydrate, & Iron AAC)4 mg22%Iron in Mega 100 against 6,910 products4 mg per serving; the middle half of products list 1.2 mg to 18 mg, the median 5 mg.DV 18 mgUL 45 mg4 mg

55% of 6,910 products listing iron give more (median 5 mg).

Zincas Zinc Sulphate DihydrateZinc (Form: as Zinc Sulphate Dihydrate)15 mg100%Zinc in Mega 100 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 Amino Acid ChelateSelenium (Form: as Selenium AAC)25 mcg36%Selenium in Mega 100 against 7,658 products25 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg25 mcg

75% of 7,658 products listing selenium give more (median 55 mcg).

Manganeseas Manganese Sulfate DihydrateManganese (Form: as Manganese Sulfate Dihydrate)6 mg300%Manganese in Mega 100 against 7,016 products6 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg6 mg

Higher than 90% of 7,016 products listing manganese (median 2 mg).

Chromiumas GTF Chromium YeastChromium (Form: as GTF Chromium Yeast)200 mcg167%Chromium in Mega 100 against 7,825 products200 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg200 mcg

Higher than 72% of 7,825 products listing chromium (median 100 mcg).

* % Daily Value computed from the printed amount and the FDA Daily Value (21 CFR 101.9); the label prints none for that row.

Source: NIH ODS Dietary Supplement Label Database, label 206622 (entered September 24, 2019), 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.
  • Its 100 mg of riboflavin is higher than 96% of the 9,824 riboflavin products that print an amount; 110 list more.
  • 86% of the 195 products that print an amount of rose (unspecified) list more than its 5 mg of rose hips (filed by NIH under rose (unspecified)) (median 30 mg).
  • At 1 serving a day, the most its directions give, the label lists 100 mg of niacin, 2.9 times the adult Tolerable Upper Intake Level.
  • Its 100 mg of thiamin is higher than 94% of the 9,830 thiamin products that print an amount; 163 list more.
  • 93% of the 11,614 products that print an amount of potassium list more than its 10 mg of potassium (median 99 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 Mega 100'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
Directions: As a dietary supplement, take one tablet daily, preferably with a meal.
Warnings
Drug Interactions: Warnings: Niacin may cause flushing, tingling and skin reddening. Accidental overdose of iron containing products is a leading cause of fatal poisoning in children under six. In case of accidental overdose, call a physician or poison control center immediately. Keep out of reach of children.
If you develop tingling, numbness sensation, decreased sensation to touch, balance difficulties or taking levodopa, consult your physician immediately.

Source: label statements in DSLD label 206622.

What else is on the label?

Other ingredients: Whey, Pharmaceutical Glaze, Stearic Acid, Hydroxypropyl Methylcellulose, Magnesium Stearate, Silicon Dioxide.

How many labels does Mega 100 have?

One label is on file, entered on September 24, 2019.

  1. Label 206622 (current) Entered September 24, 2019 · off the market August 15, 2024 · 60 tablets

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

Who makes it?

The label names Nature's Best (manufacturer). All Nature's Best products.

Where next?