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Difference Between Yellow, Green, White, and Blue Xanax Bars

Yellow 2mg xanax bars

What is a Xanax bar?

Xanax bars are the most common form of Xanax medications, containing generic alprazolam. It is a short-acting benzodiazepine helpful in treating anxiety.

Xanax bars manages anxiety disorder like panic disorder and generalized anxiety disorder.

Xanax bars effectively relieves moderate to severe anxiety and panic disorder. However, they are not a first-line treatment option after the development of selective serotonin reuptake inhibitors. Shreds of evidence show that the benefits of xanax bars in the treatment of panic disorder last only up to 4-10 weeks. However, Xanax bars treat people having panic disorder for up to 8 months.

In the United States, Xanax bars are FDA approved for treating panic disorder with or without agoraphobia. The WFSBP recommends Xanax bars for treatment-resistant conditions of panic disorder, having no history of dependence and tolerance.

What do Xanax bars look like?

Xanax bars are rectangular pills that look like rectangular wood planks. They are available in different colors. Apart from the dosage formulation of xanax bars, the medication also comes in different shapes and strengths.

The Xanax bars typically contain 2 mg of alprazolam.

Xanax bars are white, yellow, green, or blue-colored rectangular tablets with pre-scores and an imprint on the side.

How long do Xanax bars stay in your system?

Xanax bars have an average half-life of about 11-12 hours in average adults, according to the Food and Drug Administration. The half-life of xanax bars indicates half of the time they take to leave the body.

Xanax bars remain in some parts of your system longer than others. It is detectable in urine, blood, and hair, but the time Xanax bars take to clear out each one of them depends on several factors.


The body breaks down an active ingredient of the Xanax bars into a metabolite known as alpha-hydroxy-alprazolam. They are not detectable in standard urine tests. However, these tests can detect it by the presence of its metabolite.

One hundred nanograms/ milliliter of alpha-hydroxy-alprazolam lingers in urine for up to five days.


Blood detects Xanax bars for a shorter duration than urine. They have an average plasma elimination of 11.2 hours half-life. It means that the drug is detectable in the bloodstream for about 56 hours, nearly 2.5 days after use. Although blood tests are more invasive than urine tests, they are necessary for some instances.


According to a Therapeutic Drug Monitoring survey report published in the year 2015, alprazolam has a concentration of one nanogram/ milliliter in saliva for up to 2.5 days. Oral testing of Xanax bars is more reliable than hair or urine examinations in cases of identifying recent use of the drug.


Xanax bars are also detectable in human hair for about one to seven days following the last use of the medication. According to Drug Testing Laboratories of the United States, hair examinations detect alprazolam between 24 hours for up to a week. Hair tests can provide a history of three-month Xanax bars use and are useful in analyzing long-term abuse.

What are the different types of Xanax bars?

There are different colors of Xanax bars available in the markets. They come in different shapes and strengths. By prescription, Xanax bars are available as:

  • Green Xanax bars
  • Pink Xanax bars
  • White Xanax bars
  • Yellow Xanax bars
  • Blue Xanax bars
  • Peach Xanax bars
  • Purple Xanax bars

Apart from the tablets, Xanax also comes in liquid dosage formulations. It is not a standard prescription like Xanax pills. Each mL of the liquid xanax contains 2 milligrams of the alprazolam. It is an alternate form of the medication that has the same effects as the bars. Liquid Xanax is helpful for panic disorder, generalized anxiety disorder, depression, insomnia, and sometimes for symptoms of alcohol withdrawal. The liquid formulation of Xanax typically acts faster as it gets more readily absorbed.

Difference between Yellow, Green, White, and Blue Xanax bars:

Yellow Xanax Bars:

Color: yellowyellow xanax bars

Strength: 2 mg

Shape: rectangular bar-shaped

Size: 15.00 mm

Deboss: R 0 3 9

Ingredients: yellow xanax bars contain alprazolam as the active ingredient and docusate sodium, corn starch, silicon dioxide, lactose, sodium benzoate, and magnesium stearate as inactive ingredients

Colors: yellow xanax bars contain FDA approved color additive, FD & C Yellow No. 6

Other names: street names for yellow xanax bars are yellow bus, school bus, and yellow boys

Green Xanax Bars:

green xanax bars

Color: green

Strength: 2 mg

Shape: rectangular bar-shaped

Size: 15.00 mm

Deboss: S 90 3

Ingredients: green xanax bars contain alprazolam as active ingredient and crospovidone, lactose, sodium benzoate, silicon dioxide, magnesium stearate, docusate sodium, corn starch, and microcrystalline cellulose as inactive ingredients

Colors: green xanax bars contain FDA approved color additives D & C Yellow No. 10 and FD & C Blue No. 2

Other names: street names for green xanax bars are a green monster, monster xanax, and hulk xanax

White Xanax Bars:

White Xanax Bars

Color: off white or white

Strengths: 2 mg

Shape: rectangular bar-shaped

Size: 15.00 mm

Deboss: X ANA X 2

Ingredients: white xanax bars contain alprazolam as the active ingredient and sodium benzoate, powdered cellulose, docusate sodium, silicon dioxide, magnesium stearate, and corn starch as the inactive ingredients

Colors: the white color of the xanax bars is natural, and they do not contain any color additives

Other names: street names for white xanax bars are planks, sticks, and schoolboys

Blue Xanax Bars:

blue Xanax Bars

Color: blue

Strength: 2 mg

Shape: rectangular bar-shaped

Size: 15.00 mm

Deboss: B 7 0 7

Ingredients: blue xanax bars contain alprazolam as the active ingredient and lactose monohydrate, magnesium stearate, microcrystalline cellulose, sodium lauryl sulfate, and sodium starch type-A glycolate corn as inactive ingredients

Colors: blue xanax bars have FDA approved color additive FD & C Blue No. 2

Other names: street names for blue xanax bars are blue football, blue plank, and bicycle parts

What are the effects of Xanax bars?

Xanax bars do not affect everyone in the same way. How the bars affect a person depends upon several factors, including:

  • The mental state of the person at the time of taking xanax bars
  • Age, weight, and height of the person
  • Metabolism and organ functions
  • Dosage of xanax bars

If an individual is taking anti-anxiety medications for the first time, it is essential that they should know its potential risks, side effects, and interactions before using xanax bars.

A person taking xanax bars for treating panic or anxiety disorder may feel normal after their first dose. It causes sedating effects that help alleviate symptoms of anxiety and calm the responses of the body for stress and anxiety.

Many people also take xanax bars recreationally, or without a prescription. They feel the calming and sedating effects of xanax. Unlike other recreational drugs like cocaine, xanax does not produce a “high” or euphoric feeling. However, xanax bars users report feeling more relaxed, calm, quiet, and tired. These feelings may also lead to falling asleep or even passing out for a few hours.

Some people abusing xanax bars also report memory loss, blacking out, or not remembering what happened for several hours.

Higher doses of xanax bars have stronger effects.

How many milligrams are Xanax bars?

Xanax bars, also known as planks, zanies, or z-bars, are small bar-shaped or pill-sized tablets containing 2 milligrams of the active ingredient alprazolam. The 2 mg xanax bars come with pre-scores to break them into four quarters of 0.5 mg each and take them individually.

People who need to take a 1 mg dose of the xanax can also break 2 mg xanax bars into two parts to consume a 1 mg dose of xanax.

Xanax round, oval, elliptical, or triangular tablets contain different strengths of alprazolam. However, xanax bars come only in the 2 milligrams strength.

Which Xanax bars are the best?

Green, yellow, white, and blue xanax bars contain the same strength as the active ingredient. Thus, they all have the same effectiveness and side effects.

However, many post-production clinical reports show that different xanax bars have different efficacy for patients of anxiety and panic disorder.

People dealing with the panic disorder need to take higher doses of xanax, so they usually buy green xanax bars. Several studies and reviews also demonstrate that green xanax bars are the best for the management of panic attacks.

On the other hand, anxiety disorder patients take a comparatively lesser dosage of the medications. Clinical trials and patients’ reports conclude that white xanax bars are the best for the management of anxiety attacks.

However, no clinical researches indicate any difference in the efficacy or safety or green, white, yellow, or blue xanax bars in treating anxiety and panic disorders.