is a brand name for a family of herbicides, most commonly associated with glyphosate, a chemical that inhibits an enzyme essential for plant growth. The main active ingredient in traditional Roundup formulations is the isopropylamine salt of glyphosate, often combined with a surfactant like polyethoxylated tallow amine (POEA) to enhance penetration into plant leaves.

However, many current consumer Roundup products no longer contain glyphosate. Instead, they use alternative active ingredients such as:

  • Diquat dibromide (200 times more chronically toxic than glyphosate, banned in the EU)

  • Triclopyr (persists in soil, harmful to trees and edible plants)

  • Fluazifop-P-butyl

  • Imazapic

These newer formulations are used in products marketed for lawns and gardens, and they are not interchangeable with glyphosate-based Roundup. Always check the label for the "Active Ingredient(s)" and their percentages to determine the chemical composition.

For safety:

  • Avoid contact with skin, eyes, or clothing.

  • Do not apply near edible plants, trees, or water sources.

  • Use appropriate personal protective equipment (PPE) like gloves and goggles.

  • In case of exposure, follow first aid instructions on the label and contact a poison control center.

⚠️ Important: The term "Roundup" now refers to multiple products with different chemicals. Never assume a Roundup product contains glyphosate—read the label carefully.

trademark of glyphosate-based herbicide made by Monsanto

Roundup® Dual Action 365
Roundup® Dual Action Weed & Grass Killer Plus 4 Month Preventer
Roundup® For Lawns (Northern)
Roundup® Weed Barrier Granules
Roundup is a brand name of herbicide originally produced by Monsanto, which Bayer acquired in 2018. Prior to the late-2010s formulations, it used broad-spectrum glyphosate-based herbicides. As of 2009, sales of Roundup … Wikipedia
Factsheet
Manufacturing status
Manufacturer Bayer
Factsheet
Manufacturing status
Manufacturer Bayer
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Wikipedia
en.wikipedia.org › wiki › Roundup_(herbicide)
Roundup (herbicide) - Wikipedia
January 16, 2026 - Roundup is a brand name of herbicide originally produced by Monsanto, which Bayer acquired in 2018. Prior to the late-2010s formulations, it used broad-spectrum glyphosate-based herbicides. As of 2009, sales of Roundup herbicides still represented about 10 percent of Monsanto's revenue despite competition from Chinese producers of other glyphosate-based herbicides.
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Roundup
roundup.com › en-us › home
Weed Control | Roundup
Kills existing weeds and grass down to the root and prevents new weeds from growing for up to 4 months. ... A tough weed killer that is formulated to kill even the toughest listed grassy weeds. ... Take control of your outdoor space with Roundup® Weed & Grass Killer₄ Concentrate.
Discussions

US: Do not use the name “RoundUp” when you mean “glyphosate”. RoundUp doesn’t even contain glyphosate anymore.
Read the label and follow the directions. This is a good reminder that the label is a legal document. More on reddit.com
🌐 r/gardening
63
492
January 19, 2025
Round up. How dangerous is it?
I live in a rural area, and the farmers tell me they use a lot of it with no problems, but that they follow safety precautions: masks, gloves, arms & legs covered, don't spray when it's windy, etc. More on reddit.com
🌐 r/GardeningAustralia
148
34
March 1, 2024
I THINK 2024 MOP UP ROUND WILL BE EXTREMELY RISKY

Round 1 and Round 2 are still safe, cause even if u go for round 2, ur previous seat remains with u until and unless u get something better, but mop ups, u lose ur seat and 2024 curse is pretty dark. it will be badd like badd bad

More on reddit.com
🌐 r/wbjee
41
12
March 13, 2023
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Roundup
roundup.com › en-us › shop › driveway-patio-weeds › roundup-weed-and-grass-killer-concentrate.html
Roundup® Weed & Grass Killer₄ Concentrate | Roundup | Roundup US | Roundup US
... Enter a ZIP code to get product recommendations and information tailored to your area. ... Roundup® Weed & Grass Killer₄ Concentrate kills tough weeds and grasses to the root, including dandelion, large crabgrass, poison ivy, clover (red & white), spotted spurge, and other broadleaf weeds
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Crop Science US
cropscience.bayer.us › crop-protection › herbicide › roundup-powermax-3-herbicide
Roundup Powermax 3 Herbicide | Crop Science US
After nearly 50 years of innovation ... expect. Roundup PowerMAX® 3 herbicide contains a unique surfactant blend with the highest concentration of glyphosate acid equivalent-per-gallon, 4.8 lb A.E. per gallon, in the US market....
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US EPA
epa.gov › ingredients-used-pesticide-products › glyphosate
Glyphosate | US EPA
May 9, 2025 - Products containing glyphosate are sold in various formulations, including as liquid concentrate, solid, and ready-to-use liquid. Glyphosate is used in products such as Roundup® to control weeds in both agricultural and non-agricultural settings.
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Iowa State University
crops.extension.iastate.edu › encyclopedia › glyphosate-review
Glyphosate - A Review | Integrated Crop Management
March 28, 2025 - The Roundup Ultra label states that the active ingredient is “Glyphosate, N-(phosphonomethyl)glycine, in the form of its isopropylamine salt”. The term ‘glyphosate’ is the common name of the chemical, whereas ‘N-(phosphonomethyl)glycine’ ...
Find elsewhere
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NYTimes
nytimes.com › 2026 › 01 › 02 › climate › glyphosate-roundup-retracted-study.html
A Study Is Retracted, Renewing Concerns About the Weedkiller Roundup - The New York Times
January 5, 2026 - In 2000, a landmark study claimed to set the record straight on glyphosate, a contentious weedkiller used on hundreds of millions of acres of farmland. The paper found that the chemical, the active ingredient in Roundup, wasn’t a human health risk despite evidence of a cancer link.
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PubChem
pubchem.ncbi.nlm.nih.gov › compound › Glyphosate
Glyphosate | C3H8NO5P | CID 3496 - PubChem
Glyphosate | C3H8NO5P | CID 3496 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
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Consumer Notice
consumernotice.org › home › environmental health › pesticides › roundup
Roundup Weed Killer | Uses, Safety & Cancer Risk
3 days ago - Glyphosate is the active ingredient in Roundup. These products are used worldwide as herbicides. Some people believe it potentially causes cancer.
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Roundup
roundup.com › en-us › shop › landscape-weeds › roundup-weed-and-grass-killer₄-concentrate › roundup-weed-and-grass-killer-concentrate.html
Roundup Concentrate Plus Weed and Grass Killer | Roundup
Roundup® Weed & Grass Killer₄ Concentrate kills tough weeds and grasses to the root, including dandelion, large crabgrass, poison ivy, clover (red & white), spotted spurge, and other broadleaf weeds
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Environmental Working Group
ewg.org › areas-focus › toxic-chemicals › glyphosate
Glyphosate | Environmental Working Group
Glyphosate, a widely used toxic pesticide, is the active ingredient in Monsanto’s Roundup. It is sprayed on oats right before harvest, so it ends up in many oat-based products, like cereals and breakfast bars.
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Amazon
amazon.com › Concentrate-Glyphosate-Gallon-Systemic-Herbicide › dp › B007XZ84O4
Amazon.com : Round Up Pro Weed Killer 2.5 Gallon : Weed Killers : Patio, Lawn & Garden
Roundup Pro Weed Killer from Monsanto contains 50.2% glyphosate for quick kill of weeds and grasses. Roundup Pro Comes in a 2.5 gallon container which will treat up to 4 acres making it much more economical than the roundup products fond in ...
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Friends of the Earth
foe.org › home › media › new roundup weedkiller 45 times more toxic to human health
New Roundup weedkiller 45 times more toxic to human health • Friends of the Earth
October 22, 2024 - Roundup products sold to consumers now contain combinations of four new active ingredients as replacements for glyphosate: diquat dibromide, fluazifop-P-butyl, triclopyr, and imazapic.
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Healthline
healthline.com › nutrition › roundup-glyphosate-and-health
Is the Roundup Weed Killer (Glyphosate) Bad for You?
July 21, 2023 - Roundup is a popular weed killer with glyphosate as the main ingredient. The use of Roundup is highly controversial, and some claim that it can cause harm.
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Reddit
reddit.com › r/gardening › us: do not use the name “roundup” when you mean “glyphosate”. roundup doesn’t even contain glyphosate anymore.
r/gardening on Reddit: US: Do not use the name “RoundUp” when you mean “glyphosate”. RoundUp doesn’t even contain glyphosate anymore.
January 19, 2025 -

I've seen too many cases where gardeners have inadvertently poisoned the soil in their gardens by not reading the label of the "RoundUp" they bought. They thought that "RoundUp" means "glyphosate".

RoundUp makes about nine different products for the residential market, and none of them contain glyphosate, except the ones with the purple caps that you still might find in garden centers and home improvement stores. That product is no longer being produced. Most of the new RoundUp products contain triclopyr, which should not be used in vegetable gardens or near edible plants (apple trees, blueberry bushes, nut trees). This article (pdf) is a good summary of the ingredients in the various RoundUp products. https://utia.tennessee.edu/publications/wp-content/uploads/sites/269/2024/05/W1237.pdf

Glyphosate (the previous active ingredient in “RoundUp”) is absorbed only by the leaf of the plant, and has a short half-life in soils. Triclopyr, on the other hand, is taken up by both the leaves and the roots, and can persist in the soil for a fairly long time, so it should not be used to clear weeds before planting edible plants. You also have to be very careful when applying it anywhere near the drip line of trees and shrubs, since root absorption is possible.

If you are looking to rapidly kill a growing weed, pelargonic acid, ammonium nonanoate (the ammonium salt of pelargonic acid) or high concentrations of acids (Bonide), solvents (Avenger) or salts (Earth’s Ally) will work on young weeds and annual weeds, without persistent effects in the soil or effects on other plants that are not sprayed, although high amounts of salts can take a long time to leach out. Since these chemicals are caustic, you still need to use appropriate PPE when handling them.

I personally do not use any form of chemical weed control in my gardens, but I do agree that there are occasions where they can be appropriate. In all cases of use, however, please read the labels and look up the effects of the active ingredients. Make sure that the product you are using does what you want it to do without causing any undesired side effects. And be extra cautious if you will be using any product where you, your family or animals might eat the plants.

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Penn State
extension.psu.edu › glyphosate (roundup): understanding risks to human health
Glyphosate (Roundup): Understanding Risks to Human Health
Glyphosate was first registered in the United States in 1974 as the active ingredient in Roundup but is now available in many commercial herbicide products. There is currently increased concern about glyphosate impacts on human health, including risks of cancer. This article reviews the risk assessment process for evaluating the potential of glyphosate to cause adverse effects on human health and aims to improve understanding of recent studies on its carcinogenicity. All chemicals, including herbicides, are potentially hazardous to human health.
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Natseed
natseed.com › pdf › Roundup Pro Label.pdf pdf
The complete broad-spectrum postemergence
The complete broad-spectrum postemergence · professional herbicide for industrial, turf and