PlainVitamins

Gc-MSM 3550

by Progressive Professional from Progressive Laboratories · capsule · 120 capsules

  • On the market (NIH)
  • UPC 3 51821 00762 5
  • DSLD label 261763
  • Serving 4 capsules
  • 30 servings

Gc-MSM 3550 by Progressive Professional from Progressive Laboratories lists 14 ingredients, 14 with an amount per serving of 4 capsules, such as 100 mg of vitamin C, 50 IU of vitamin E, 100 mg of pantothenic acid and 2 mg of manganese. Its current label entered the NIH Dietary Supplement Label Database on February 23, 2022.

What is in Gc-MSM 3550?

Each row as the label prints it, per serving of 4 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).

Gc-MSM 3550: Supplement Facts rows against the market (DSLD label 261763, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid100 mg167%Vitamin C in GC-MSM 3550 against 18,583 products100 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg100 mg

50% of 18,583 products listing vitamin C give more (median 100 mg).

Vitamin Eas D-Alpha-Tocopheryl Succinate50 IU167%Vitamin E in GC-MSM 3550 against 6,459 products50 IU per serving; the middle half of products list 15 IU to 100 IU, the median 30 IU.50 IU

Higher than 61% of 6,459 products listing vitamin E (median 30 IU).

Pantothenic Acidas Calcium Pantothenate100 mg1,000%Pantothenic Acid (Vitamin B5) in GC-MSM 3550 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).

Manganeseas Manganese Amino Acid Chelate2 mg100%Manganese in GC-MSM 3550 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).

Molybdenumas Molybdenum Amino Acid Chelate75 mcg100%Molybdenum in GC-MSM 3550 against 4,390 products75 mcg per serving; the middle half of products list 25 mcg to 75 mcg, the median 50 mcg.DV 45 mcgUL 2,000 mcg75 mcg

Higher than 62% of 4,390 products listing molybdenum (median 50 mcg).

Methyl Sulfonyl Methane1,700 mgMethylsulfonylmethane in GC-MSM 3550 against 1,454 products1,700 mg per serving; the middle half of products list 150 mg to 1,000 mg, the median 500 mg.1,700 mg

Higher than 94% of 1,454 products listing methylsulfonylmethane (median 500 mg).

Glucosamine Hydrochloride1,500 mgGlucosamine Hydrochloride in GC-MSM 3550 against 628 products1.5 g per serving; the middle half of products list 0.75 g to 1.5 g, the median 1.5 g.1.5 g

5% of 628 products listing glucosamine hydrochloride give more (median 1.5 g).

Chondroitin Sulfate250 mgChondroitin Sulfate in GC-MSM 3550 against 950 products250 mg per serving; the middle half of products list 200 mg to 1,200 mg, the median 400 mg.250 mg

63% of 950 products listing chondroitin sulfate give more (median 400 mg).

N-Acetyl Glucosamine100 mgN-Acetyl Glucosamine in GC-MSM 3550 against 148 products100 mg per serving; the middle half of products list 79 mg to 500 mg, the median 250 mg.100 mg

66% of 148 products listing N-acetyl glucosamine give more (median 250 mg).

L-Cysteine100 mgCysteine in GC-MSM 3550 against 516 products100 mg per serving; the middle half of products list 30 mg to 200 mg, the median 85 mg.100 mg

Higher than 51% of 516 products listing cysteine (median 85 mg).

Green Shell Musselgreen shell mussel is a natural soource of mucopolusaccharides & superoxide dismustase50 mgNew Zealand green-lipped mussel in GC-MSM 3550 against 78 products50 mg per serving; the middle half of products list 100 mg to 750 mg, the median 250 mg.50 mg

90% of 78 products listing new zealand green-lipped mussel give more (median 250 mg).

Hyaluronic Acid20 mgHyaluronic acid in GC-MSM 3550 against 900 products20 mg per serving; the middle half of products list 10 mg to 100 mg, the median 50 mg.20 mg

64% of 900 products listing hyaluronic acid give more (median 50 mg).

N-Acetyl Cysteine10 mgN-Acetyl Cysteine in GC-MSM 3550 against 1,259 products10 mg per serving; the middle half of products list 55 mg to 500 mg, the median 150 mg.10 mg

96% of 1,259 products listing N-acetyl cysteine give more (median 150 mg).

L-GlutathioneReduced4 mgGlutathione in GC-MSM 3550 against 717 products4 mg per serving; the middle half of products list 10 mg to 200 mg, the median 50 mg.4 mg

93% of 717 products listing glutathione give more (median 50 mg).

Source: NIH ODS Dietary Supplement Label Database, label 261763 (entered February 23, 2022), 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 1,700 mg of methyl sulfonyl methane (filed by NIH under methylsulfonylmethane) is higher than 94% of the 1,454 methylsulfonylmethane products that print an amount; 88 list more.
  • 90% of the 78 products that print an amount of new zealand green-lipped mussel list more than its 50 mg of green shell mussel (filed by NIH under new zealand green-lipped mussel) (median 250 mg).
  • 96% of the 1,259 products that print an amount of N-acetyl cysteine list more than its 10 mg of N-acetyl cysteine (median 150 mg).
  • 93% of the 717 products that print an amount of glutathione list more than its 4 mg of L-glutathione (filed by NIH under glutathione) (median 50 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 Gc-MSM 3550'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: Four capsules daily, or more, as directed by a health care professional.
Warnings
Pregnant and/or lactating women should consult their physician prior to use.
Tamper evident band around cap and seal on bottle. Do not use if either seal is broken or missing.
Keep out of the reach of children.
Contains: Crustacean shellfish (crab and shrimp).

Source: label statements in DSLD label 261763.

What else is on the label?

Other ingredients: Gelatin, Vegetable Lubricant.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GMP Good Manufacturing Practice Certified GMP Compliant 21 CFR 111.

How many labels does Gc-MSM 3550 have?

One label is on file, entered on February 23, 2022.

  1. Label 261763 (current) Entered February 23, 2022 · on the market · 120 capsules · UPC 3 51821 00762 5

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

Who makes it?

The label names Progressive Laboratories, Inc. (manufacturer), Irving, Texas. All Progressive Professional from Progressive Laboratories products.

Where next?