PlainVitamins

Carbo-SYN

by Douglas Laboratories · capsule · 120 capsules

  • Off the market since January 2012 (NIH)
  • UPC 3 10539 01547 6
  • DSLD label 8130
  • Serving 4 capsules
  • 30 servings

Carbo-SYN by Douglas Laboratories lists 34 ingredients, 30 with an amount per serving of 4 capsules, such as 1,000 IU of vitamin A, 300 mg of vitamin C, 30 IU of vitamin E and 10 mg of thiamine; 4 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on April 26, 2012.

What is in Carbo-SYN?

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).

Carbo-SYN: Supplement Facts rows against the market (DSLD label 8130, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin A1,000 IU20%Vitamin A in Carbo-SYN against 5,772 products1,000 IU per serving; the middle half of products list 2,000 IU to 5,000 IU, the median 4,000 IU.1,000 IU

84% of 5,772 products listing vitamin A give more (median 4,000 IU).

Vitamin Cas Ascorbic Acid300 mg500%Vitamin C in Carbo-SYN against 18,583 products300 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg300 mg

Higher than 75% of 18,583 products listing vitamin C (median 100 mg).

Vitamin Eas Vitamin E SuccinateVitamin E (Form: as Vitamin E Succinate)30 IU100%Vitamin E in Carbo-SYN against 6,459 products30 IU per serving; the middle half of products list 15 IU to 100 IU, the median 30 IU.30 IU

44% of 6,459 products listing vitamin E give more (median 30 IU).

Thiamine10 mg667%Thiamin in Carbo-SYN against 9,830 products10 mg per serving; the middle half of products list 1.5 mg to 25 mg, the median 5 mg.DV 1.2 mg10 mg

Higher than 59% of 9,830 products listing thiamin (median 5 mg).

Riboflavin5 mg294%Riboflavin in Carbo-SYN against 9,824 products5 mg per serving; the middle half of products list 1.7 mg to 25 mg, the median 4 mg.DV 1.3 mg5 mg

Higher than 51% of 9,824 products listing riboflavin (median 4 mg).

Niacinamide200 mg1,000%Niacin in Carbo-SYN against 12,413 products200 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg200 mg

Higher than 95% of 12,413 products listing niacin (median 20 mg). 5.7 times the adult UL a day.

Vitamin B6as Pyridoxine HydrochlorideVitamin B-6 (Form: as Pyridoxine HCl)10 mg500%Vitamin B6 in Carbo-SYN against 15,277 products10 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg10 mg

Higher than 55% of 15,277 products listing vitamin B6 (median 6 mg).

Folic Acid20 mcg5%Folate in Carbo-SYN against 7,022 products20 mcg per serving; the middle half of products list 200 mcg to 400 mcg, the median 400 mcg.20 mcg

97% of 7,022 products listing folate give more (median 400 mcg).

Vitamin B1210 mcg167%Vitamin B12 in Carbo-SYN against 14,425 products10 mcg per serving; the middle half of products list 6 mcg to 200 mcg, the median 36 mcg.DV 2.4 mcg10 mcg

67% of 14,425 products listing vitamin B12 give more (median 36 mcg).

Pantothenic Acidas Calcium PantothenatePantothenic Acid (Form: as Calcium Pantothenate)50 mg500%Pantothenic Acid (Vitamin B5) in Carbo-SYN against 10,060 products50 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg50 mg

Higher than 72% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Calciumas Calcium CitrateCalcium (Form: from Calcium Citrate Complex)100 mg10%Calcium in Carbo-SYN against 17,831 products100 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg100 mg

53% of 17,831 products listing calcium give more (median 115 mg).

Iodineas KelpIodine (Form: from Kelp)20 mcg13%Iodine in Carbo-SYN against 6,382 products20 mcg per serving; the middle half of products list 75 mcg to 150 mcg, the median 150 mcg.DV 150 mcgUL 1,100 mcg20 mcg

96% of 6,382 products listing iodine give more (median 150 mcg).

Magnesiumas Magnesium Aspartate, Magnesium OxideMagnesium (Form: from Magnesium Aspartate, Magnesium Oxide)200 mg50%Magnesium in Carbo-SYN 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 AspartateZinc (Form: from Zinc Aspartate Complex)10 mg67%Zinc in Carbo-SYN against 13,186 products10 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg10 mg

51% of 13,186 products listing zinc give more (median 11 mg).

Seleniumas Selenium Krebs Cycle ChelateSelenium (Form: from Selenium Krebs† Note: †Krebs = Citrate, Fumarate, Malate, Glutarate and Succinate Complex.)10 mcg14%Selenium in Carbo-SYN against 7,658 products10 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg10 mcg

94% of 7,658 products listing selenium give more (median 55 mcg).

Copperas Copper SebecateCopper (Form: from Copper Sebecate)2 mg100%Copper in Carbo-SYN against 6,468 products2 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg2 mg

Higher than 66% of 6,468 products listing copper (median 1 mg).

Manganeseas Manganese Aspartate, Manganese SulfateManganese (Form: from Manganese Aspartate, Manganese Sulfate)5 mg250%Manganese in Carbo-SYN against 7,016 products5 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg5 mg

Higher than 80% of 7,016 products listing manganese (median 2 mg).

Chromiumas Chromium ChelateChromium (Form: from Chromium Chelate)400 mcg333%Chromium in Carbo-SYN against 7,825 products400 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg400 mcg

Higher than 93% of 7,825 products listing chromium (median 100 mcg).

Molybdenumas Molybdenum Krebs ComplexMolybdenum (Form: from Molybdenum Krebs Complex (Form: Molybdenum Citrate, Molybdenum Fumarate, Molybdenum Malate, Molybdenum Glutarate, and Molybdenum Succinate))10 mcg13%Molybdenum in Carbo-SYN against 4,390 products10 mcg per serving; the middle half of products list 25 mcg to 75 mcg, the median 50 mcg.DV 45 mcgUL 2,000 mcg10 mcg

91% of 4,390 products listing molybdenum give more (median 50 mcg).

Potassiumas Potassium Aspartate, Potassium ChloridePotassium (Form: from Potassium Aspartate, Potassium Chloride)25 mg1%Potassium in Carbo-SYN against 11,614 products25 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg25 mg

86% of 11,614 products listing potassium give more (median 99 mg).

Hesperidin Complex10 mg
Rutin5 mgRutin in Carbo-SYN against 1,232 products5 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.5 mg

84% of 1,232 products listing rutin give more (median 25 mg).

Bioflavonoids100 mgFlavonoid in Carbo-SYN against 2,343 products100 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.100 mg

Higher than 62% of 2,343 products listing flavonoid (median 50 mg).

Vanadiumas Vanadium Krebs Cycle ChelatesVanadium (Form: from Vanadium Krebs Note: Krebs = Citrate, Fumarate, Malate, Glutarate and Succinate Complex.)10 mcgVanadium in Carbo-SYN against 1,744 products10 mcg per serving; the middle half of products list 10 mcg to 100 mcg, the median 25 mcg.UL 1,800 mcg10 mcg

60% of 1,744 products listing vanadium give more (median 25 mcg).

Pancreatin 8XPancreatin 8X Note: supplying62.5 mg
Amylase12,500 USP Units
Protease12,500 USP Units
LipaseLipase Activity1,000 USP Units
Lecithinas SoyLecithin (Form: from Soy)500 mgLecithin in Carbo-SYN against 804 products500 mg per serving; the middle half of products list 50 mg to 1,200 mg, the median 200 mg.500 mg

Higher than 59% of 804 products listing lecithin (median 200 mg).

Lactalbumin Hydrolysateas Milk250 mg
raw Adrenal Concentrate80 mgAdrenals in Carbo-SYN against 218 products80 mg per serving; the middle half of products list 30 mg to 200 mg, the median 100 mg.80 mg

51% of 218 products listing adrenals give more (median 100 mg).

raw Pancreas concentrate50 mgPancreas in Carbo-SYN against 93 products50 mg per serving; the middle half of products list 32 mg to 350 mg, the median 100 mg.50 mg

57% of 93 products listing pancreas give more (median 100 mg).

Proprietary Blend (Non-Nutrient/Non-Botanical)Proprietary Blend (Non-Nutrient/Non-Botanical) Note: raw concentrates (not extracts), (all from bovine sources)20 mg
Kidneyin the blend, no amount given
Spleenin the blend, no amount given
Thymusin the blend, no amount given
Liverin the blend, no amount given

Source: NIH ODS Dietary Supplement Label Database, label 8130 (entered April 26, 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:

  • At 1 serving a day, the most its directions give, the label lists 200 mg of niacin, 5.7 times the adult Tolerable Upper Intake Level.
  • 97% of the 7,022 products that print an amount of folate list more than its 20 mcg of folic acid (filed by NIH under folate) (median 400 mcg).
  • 96% of the 6,382 products that print an amount of iodine list more than its 20 mcg of iodine (median 150 mcg).
  • 94% of the 7,658 products that print an amount of selenium list more than its 10 mcg of selenium (median 55 mcg).
  • Its 400 mcg of chromium is higher than 93% of the 7,825 chromium products that print an amount; 391 list more.
  • 91% of the 4,390 products that print an amount of molybdenum list more than its 10 mcg of molybdenum (median 50 mcg).

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 Carbo-SYN'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 4 capsules daily with meals, 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, wheat gluten, milk / dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.
Storage
For optimal storage conditions, store in a cool, dry place. (59°-77°F/15°-25°C) (35-65% relative humidity)

Source: label statements in DSLD label 8130.

What else is on the label?

Other ingredients: Gelatin, Vegetable Stearate.

How many labels does Carbo-SYN have?

One label is on file, entered on April 26, 2012.

  1. Label 8130 (current) Entered April 26, 2012 · off the market January 20, 2012 · 120 capsules · UPC 3 10539 01547 6

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?