S 90 3 Pill – Mode of action, Side Effects, Identification, and Interaction


The S 90 3 pill is one of the numerous pills that is confused with some Xanax drugs, despite the glaring differences in color and shape. Green football Xanax is different in shape to this pill and therefore, has little basis for comparison except in the active ingredients and color. S 90 3 pill is a benzodiazepine supplied by Dava Pharmaceuticals Inc.

The S 90 3 pill is a rectangular, green pill that belongs to the benzodiazepine drug class, alongside drugs such as Xanax. It contains 2 mg of alprazolam and is only available to the public on the presentation of a doctor’s prescription. It is a schedule 4 controlled substance and it is considered to be of great risk to fetuses; therefore, unsafe for use during pregnancy.

In this article, we will discuss about the appearance and identification of the S 90 3 pill, to avoid mistaking it for another drug. We will also talk about how this pill works in the human body, the side effects that you can expect from using it, and how it interacts with other medications.

S 90 3 Pill Identification

The S 90 3 pill is easily identified and should not be confused with another pill, the S903 pill. They are different pills that treat different conditions. The S 90 3 pill is a green, rectangular pill that contains 2 mg of alprazolam. It is used to treat conditions such as anxiety and panic disorder. It measures about 15 mm along its length and has the imprint S 90 3 in front of it. The rear of the pill is blank and the imprint is separated by two indentations; one between the letter “S” and the number “90”, and the other between the number “90” and another number “3”. The indentations are supposed to help the patients that use this pill to break the pill easily, to meet their dosage.

S 90 3 Pill - Green Xanax Bar
S 90 3 Pill - Green Xanax Bar

However, the pill should not be confused with S903 pill that is available in a capsule but is blue, and is used to treat urinary tract infections.

S 90 3 Pill Mode of Action

Commonly called Green Xanax bar, the S 90 3 pill works the same way other Xanax pills do. It exerts its effect on the benzodiazepine receptor of the brain, causing a reduction in messages transmitted to the brain, and consequently helping to calm an anxious patient. It is fast acting and is not usually recommended as the first drug for panic disorders and anxiety.

Alprazolam, 2 mg of it in the s 90 3 pill binds with GABA, a neurotransmitter, and it, in turn, binds with the GABAA receptor in the brain, thereby pronouncing the calming effect of alprazolam, and making the nervous system calm. This is why it is also called a tranquilizer. The calming effect comes about when the GABAA receptor, which is a chloride ion channel in the nervous system, opens up and allows chloride ions into the opening. This makes depolarization difficult, and causes the cells to calm by reducing synaptic transmission.

The administration of alprazolam into the human body causes a significant suppression of the communication between the hypothalamus, pituitary gland, and the adrenal gland. This also has a marked effect on the anxiety level of its users and the amount of dopamine in the affected individual’s system.

S 90 3 Pill Interaction with other drugs.

Being a schedule 4 controlled substance, it is expected that a patient must consult a doctor before they have access to the pill. Also, such patient must have informed the doctor of their medical history and the medications they are currently using. This is important as some drugs may interact with alprazolam and cause medical emergencies.

Some of the drugs alprazolam interact with include:

  • Benadryl (diphenhydramine) is an antihistamine used to relieve allergy symptoms. It works by inhibiting the secretion of histamine and can cause an individual to sleep. Its depressant property makes it a wrong drug combination with alprazolam as their combination cause respiratory depression.
  • Ambien (Zolpidem) is a medication used to treat insomnia, one of the symptoms of anxiety and panic disorder. It reduces and dulls the activities of the nervous system and has a depressant and tranquilizing effect on its users. Combining it with alprazolam may lead to fatal medical emergencies, such as slow heart rate.
  • Metoprolol is used to treat heart palpitations, high blood pressure, and migraines, among others. In other words, it is a depressant drug that reduces the activity in the brain and its surrounding organs. Due to its mode of action being similar to alprazolam, and to avoid enhanced effect by combination, they shouldn’t be used together.
  • Norco (acetaminophen/hydrocodone) is a drug used to treat severe pain and cough but for a short time. It is a controlled substance that can cause dependence and addiction; hence it’s use with another controlled drug is dangerous. A combined use of these drugs can lead to heart failure.
  • Lyrica (Pregabalin) is a powerful analgesic used to treat pain caused by nerve damage. It targets the spinal cord and neurotransmitters, similar to the mode of action of alprazolam; hence, they cannot be used together.

Who Shouldn’t Use S 90 3 pill (Alprazolam 2 mg)?

This pill is used to treat anxiety and panic disorders. This means it helps to bring sweat, breathing difficulty, poor coordination, symptoms of anxiety and panic attacks, under control. However, due to the addictive nature of this pill, and its mode of action of the hypothalamus, pituitary and adrenal glands, it is unsafe for some individuals. They include:

Drug Dependent Patients

S 90 3 pill is an addictive drug, hence its status as a controlled drug. It has a high chance of making a patient that has an history of substance abuse become dependent on the drug again, leading to drug misuse and eventually difficult withdrawal from the drug.

With withdrawal from this drug comes issues such as seizures and symptoms it should treat, in other words, paradoxical reactions.

Liver Disease Patients

Patients with liver diseases don’t have the capacity to process alprazolam effectively, hence it remains in their system for longer, causing stress to the liver and further damaging it.

Depression Patients

As a pill with depressant qualities as effected on the GABA receptor, patients with depression are not allowed on this medication as it may compound their symptoms.

Patients with Closed-angle Glaucoma

With closed-angle glaucoma, an affected individual has increased pressure in their affected eye, and fluid can’t circulate. Alprazolam allows chlorine channels to open and fills them up. Such activity around the eye complicates the problem of such patient by further increasing the pressure in the eye.

Patients with respiratory depression Issues

Anxiety and panic disorders are characterized by rapid and shallow breaths that are ineffective in allowing enough oxygen into the lungs. Alprazolam can cause further respiratory depression in such patients, hence the need for them to stay off it.

Side Effects of Using S 90 3 Pill.

The side of effects of abusing or exceeding the recommended dosage of the S 90 3 pill, green Xanax bar, varies from individual to individual. However, they can range from cognitive dysfunction to fatigue, drowsiness, depression, memory impairment, skin rash, tremor, decreased libido, ataxia, hyperventilation, hypotension, and weight loss, among others.


Green Xanax Bar with the imprint S 90 3 is a controlled drug that is used to treat anxiety and panic disorders. It is only available on prescription and cannot be used with drugs that have effect on the nervous system as it does.

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Ayomide is a fiction and non-fiction writer. A lover of science and everything mysterious that surrounds it, he seeks out new information to keep his interest alive.

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