Order Naltrexone (Generic Revia)

Brand Name Revia
Generic Name Naltrexone
Category Antihistamine
Medication 50 mg

Information to have about Naltrexone (Generic Equivalent to Revia) ..

What is Naltrexone (Generic Revia) and what are its uses?
How does Naltrexone (Generic Revia) Works (Mechanism) ?
Dosage: How should you take Naltrexone (Generic Revia) ?
Possible food and drug interactions when taking Naltrexone (Generic Revia)
Naltrexone (Generic Revia) Warnings and Precautions.
Naltrexone (Generic Revia) Side effects.

Order Naltrexone - Generic Equivalent to Revia
Category : Antihistamine
Medication Quantity Price USD Order

What is Naltrexone (Generic Revia) and what are its uses?

Revia is an antihistamine. Antihistamines work against the naturally occurring chemical histamine in your body.

Revia is used to prevent sneezing, runny nose, itching and watering of the eyes, and other allergic symptoms.


How does Naltrexone (Generic Revia) Works (Mechanism) ?

Revia belongs to a group of medicines called non-sedating antihistamines.

Histamine is a chemical produced by the body. Revia is stored in cells (mast cells) in almost all tissues of the body. When the body reacts to a foreign substance (an allergen e.g. flower pollen), the mast cells release their stores of histamine.

Revia acts by blocking the binding of histamine to receptors in the body. Revia does not prevent the actual release of histamine from mast cells. By blocking the binding of histamine, the release of other chemicals and increased blood supply to the area is prevented or decreased. This results in prevention or relief of the typical symptoms of an allergic reaction.

Histamine may be released from and act in a small (localised) area of the body e.g. the nose. Alternatively, histamine can result in a serious or complete body reaction e.g. anaphylactic reaction. Revia is only useful for the prevention or relief of localised or less serious allergies such as an itchy rash (rather than very serious allergic reactions). 

Dosage: How should you take Naltrexone (Generic Revia) ?

Take Revia Tablets by mouth, with a sip of water. You may take Revia with food.

You may need to take Revia for several days as prescribed before your symptoms improve.


The usual starting dose of ReVia is 25 milligrams once a day. If no withdrawal symptoms occur, the doctor may increase the dosage to 50 milligrams a day.

Contact your pediatrician or health care professional regarding the use of Revia in children. Special care may be needed. Revia is usually prescribed for children 6 years of age and older.

Have you skipped your Revia dose?
If you miss a dose of Revia, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses of Revia

If you take too much of Revia?
Incase of an overdose with Revia seek medical emergency immediately.

Symptoms of Revia overdose are not well known.

Where should you store Revia?
Store Revia out of the reach of children in a container that small children cannot open.

Store Revia at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Protect from moisture. Throw away any unused amount of Revia after the expiry date.

Available strengths of Revia
Revia tablets are available in the strengths of 50 mg. 

Possible food and drug interactions when taking Naltrexone (Generic Revia)

The following drugs may interact with Revia. They may increase or decrease the activity of Revia

  • antacids
  • erythromycin
  • grapefruit, apple, or orange juice
  • ketoconazole
  • rifampin
  • St. John's Wort
  • alcohol
  • barbiturate medicines for inducing sleep or treating seizures (convulsions)
  • medicines for anxiety or sleeping problems, such as alprazolam, diazepam or Temazepam
  • medicines for hay fever and other allergies such as Antihistamines
  • medicines for mental depression (antidepressants)
  • medicines for mental problems, anxieties and psychotic disturbances
  • medicines for pain such as opiate analgesics (e.g. codeine)

Inform your health care professional about all other medicines you are taking, including non-prescription medicines, nutritional supplements, or herbal products. Also tell your prescriber or health care professional if you are a frequent user of drinks with caffeine or alcohol, if you smoke, or if you use illegal drugs. These may affect the way Revia works.

Who should not take Revia?
Revia should not be used if you are allergic to one or any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy.

If you feel you have experienced an allergic reaction, stop using Revia and inform your doctor or pharmacist immediately.

Before taking Revia, tell your doctor if you have any serious illness such as heart, kidney, or liver disease. You may require a dosage adjustment or special monitoring during treatment if you have other illnesses.

Revia should not be used in pregnancy. Seek medical advice from your doctor.

Revia may pass into breast milk. Breastfeeding mothers should not use Revia. Seek medical advice from your doctor.

Naltrexone (Generic Revia) Warnings and Precautions.

Inform your health care professional if your symptoms do not improve in 1 or 2 days of taking Revia.

Revia causes less drowsiness than most other Antihistamines. Until you know if it makes you drowsy or dizzy, do not drive, use machinery, or do anything that needs mental alertness.

Do not sit or stand up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells.

Naltrexone (Generic Revia) Side effects.

Side effects of Revia may include

  • colds or flu,
  • drowsiness,
  • fatigue,
  • indigestion,
  • menstrual problems,
  • nausea
  • abdominal pain,
  • agitation,
  • anxiety,
  • back pain,
  • dizziness,
  • dry mouth,
  • headache,
  • heart palpitations,
  • indigestion,
  • insomnia,
  • nausea,
  • nervousness,
  • respiratory tract infection,
  • throat irritation