Atarax 50 Mg (Hydroxyzine)

Last Updated on 05/29/2026 ✔ Medically Reviewed by Dr. Arjun Srivastav

What is Atarax 50 mg?

Atarax 50 mg is an antihistamine drug available by prescription. The main active agent in this drug is Hydroxyzine. It belongs to the first-generation antihistamines and is widely used because of its sedative effects and ability to combat allergic reactions.

Manufacturer

Dr. Reddy’s Laboratories Ltd. is the Indian company that first produced the medicine.

Composition and appearance

• Active Ingredient: Inside each pill is the generic component Hydroxyzine Hydrochloride.
• Excipients: These are not active components but mostly binders and fillers to give shape and volume to the medicine.
• Appearance: It comes as an oval or elliptical tablet and is white in colour.

Onset of action

• Initial Effects: The patient feels calm and a reduction of allergic triggers within 15 to 30 minutes of use.
• Peak Concentration: It takes about 2 hours for Hydroxyzine to reach maximum concentration in the blood.
• Duration: Each medicine usually lasts for 4 to 6 hours. The itch relief can last longer. Sometimes up to a day or more.

Used for Atarax 50 mg tablet

Although Atarax is technically an antihistamine, it possesses potent sedative and calming properties that make it highly effective in treating mental distress.

Acute Anxiety: It is used to treat generalized anxiety, extreme nervousness, and emotional tension.

Rapid Relief: Unlike daily antidepressants, Atarax 50mg tablet begins working within 15 to 30 minutes.

Non-Addictive Alternative: It is often prescribed as a safer, non-habit-forming alternative to benzodiazepines (like Xanax or Valium), due to its lack of physical dependence and addiction.

How does Atarax 50 mg work?

The Antihistamine Action (Skin & Allergies): At the surface level, Atarax is a medicine that blocks a type of receptor, in the body called Histamine H1-receptor.

The Process: When your body finds something it does not like, it releases a chemical called histamine. This histamine then attaches to receptors in your skin and blood vessels, making them swell, turn red, and itch a lot.

The Block: Atarax moves through your blood. Sits on these receptors. By doing so, it stops histamine from attaching to them.

The Result: This stopping of histamine provides relief from skin problems, hives, eczema, and allergic skin conditions. Atarax helps make the itching go away.

The Anxiolytic & Sedative Action (The Brain): Atarax goes into your brain, which changes your alertness levels. It slows down some parts of the brain. It also has a small effect on serotonin, which is a chemical that helps you feel calm and not anxious.

Dosage of Atarax 50 mg

Standard Dosage Guidelines (Adults)

For Anxiety and Tension:

The doctor will tell you to take 10 to 50 milligrams of this medicine every day. You will probably take it two to four times a day. For example, you might take one 25-milligram tablet four times a day. If you have Atarax tablets 50mg, your doctor might say to take them twice a day.

For Skin Allergies that make you itch:

You will usually take 25 milligrams to 50 milligrams of this medicine at night before you go to sleep. Since itching can get worse at night, the doctor might say to take 50 milligrams before you go to bed. This will help you feel better and help you sleep because it has an effect.

Atarax 50 mg (Hydroxyzine) Available Strengths:

• Atarax 10 mg
• Atarax 25 mg

Benefits of Atarax 50 mg tablet

Stopping the itching and scratching:

It does this by blocking the thing that makes you itch, by making you a little sleepy, so you do not scratch without knowing it, which can hurt your skin and give you infections.

Helping with long-term skin problems:

Atarax gives a lot of relief for cases of hives, eczema, and skin rashes that you get from things that touch your skin, like contact dermatitis, and it really helps with these conditions.

Atarax calms you down fast:

It starts working quickly, usually within thirty minutes, to make you feel better when you are feeling nervous or upset. Buy Atarax 50 mg for anxiety. It does this by reducing the physical feelings that you get when you are anxious.

Improved Sleep Quality:

Atarax reduces itching, pain, and swelling, giving relief while also reducing mental activities, giving better sleep to the patient.

What Makes Atarax (Hydroxyzine) Different?

Unlike some antihistamines that mainly target allergies, hydroxyzine also has strong calming/sedative properties.

👉 That’s why the Atarax 50 mg tablet is sometimes chosen when both itching and calming are useful.

Drug Interactions

Atarax and CNS Depressants:

When you take Atarax with Alcohol or Benzodiazepines like Alprazolam or Diazepam, or Opioids like Codeine or Morphine, or Sleep Medications like Zolpidem, it can cause problems with breathing, make you very tired, and make it hard to move around.

Atarax and QT-Prolonging Drugs:

Atarax can change your heartbeat. When you take Atarax tablets with drugs that change your heartbeat, it can cause very bad heart problems.

Avoid medicines like-

• Amiodarone and Sotalol, which are given for arrhythmia.
• Haloperidol and Quetiapine work as antipsychotics.
• Erythromycin and Clarithromycin, which are basic antibacterials.

MAO Inhibitors (MAOIs):

Taking Atarax with MAOIs (used for depression or Parkinson’s) can prolong and intensify the anticholinergic and CNS depressive effects of the medication.

Side Effects

Common Side Effects

• Extreme Sleepiness: This is the common side effect. At the Atarax 50 mg dose, you might feel tired or disoriented the next morning. It is not uncommon for people to feel this way with this medicine, and the sleepiness can be bad.
• Dry Mouth: Have more water frequently after taking your regular medicine.
• Dizziness and Confusion: Always take the medicine during your free time or at night before bedtime.
• Fatigue: You might feel tired or sluggish.
• Headache: You might have a moderate headache, but this one is usually not too bad.

Less Common Side Effects

• Vision: Avoid doing things which need focus, like driving a car.
• Urinary Retention: Check if you have severe urine passing issues, in which case to consult with a doctor.
• Constipation: This happens due to lower water retention in the digestive tract.
• Nausea: Avoid when you have a fever, and do not use on an empty stomach.

Precautions and Warnings

Heart Rhythm (QT Prolongation):

Atarax can affect how the heart beats. If you have had heart rhythm problems, a slow heartbeat, or if you take other medicines that affect the heart’s rhythm, you should not take this medicine.

CNS Depression:

This medicine can make you very sleepy because it is a dose. Do not drive a car, use machinery, or do things that can hurt you until you know how 50 mg of Atarax makes you feel.

Alcohol Consumption:

Drinking alcohol while taking Atarax can make you very sleepy and slow down your breathing.

Medical Conditions to Watch:

You should talk to your doctor before you take the Atarax 50 mg tablet if you have health problems.

Here are some things to consider:

Glaucoma: Atarax can make the pressure inside your eyes get worse.

Prostate Enlargement: It might make it even harder for you to urinate.

Asthma or Breathing Issues: Atarax has a drying effect that can make the mucus in your lungs thicker. It is harder to breathe.

Liver or Kidney Disease: Your liver and kidneys help get rid of Atarax. If they are not working, well, the drug can build up inside you and become toxic.

Storage Guidelines

Temperature: Store the tablets at room temperature, ideally between 68°F and 77°F (20°C to 25°C).

Moisture Control: Keep the medication in a dry place. Avoid storing Atarax in the bathroom cabinet, as the moisture and steam from showers can cause the Atarax tablets to degrade prematurely.

Light Protection: Keep the Atarax 50 mg tablets in their original prescription bottle or blister packaging.

Keep Out of Reach of Children and Pets: Even a small fraction of a 50 mg dose can be highly dangerous to a child or a pet.

Where to buy Atarax 50 mg in Australia?

In Australia, Atarax 50 mg tablet, which is also known as Hydroxyzine, is a medicine that you can only get with a prescription. You can get good offers on the Australiarxmeds website.