Zovirax 200 mg
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Zovirax 200 mg


Zovirax 200 mg is often used to treat infections caused by herpes and others. The active ingredient of this medicine is Acyclovir.

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90 tabs $32.00

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A tablet that is commonly used to treat infections due to certain types of viruses (infections such as varicella zoster, herpes simplex, genital herpes, and others). Zovirax 200 mg contains Acyclovir as an active ingredient. Nonetheless, it also contains other inactive ingredients such as povidone, titanium dioxide, magnesium stearate, hypromellose, and others. Zovirax 200 mg belongs to a group of drugs called antivirals. This medicine works by stopping the growth of certain viruses. It also helps heal faster sores and decreases pain and itching. Do not use Zovirax 200 mg without the doctor’s approval because you may experience unpleasant results.

The manufacturer of Zovirax 200 mg is GlaxoSmithKline.

How to Administer Zovirax 200 mg?

Usually, one tablet per day (24 hours) is considered the advised dose or as directed by your physician. Administer the pill whole by mouth with a glass full of water and avoid other drinks such as alcohol because it may increase your risk of negative effects. While swallowing, it is not allowed to crush, break, or chew the tablet. In case you notice nausea or stomach upset, you can take the tablet with milk or light food. To get a better effect from Acyclovir, you should administer it at the same time each day. In any case, avoid using Zovirax 200 mg more often than your doctor prescribes because your condition will not improve faster. Anyway, if you do not notice the desired result, your physician may gradually increase the dosage for several weeks or even change the brand of the medicine.

If you intend to use the liquid form of Acyclovir, it is advised to measure the dose with a special spoon. Avoid using a household spoon because you may get the wrong dose, which may also increase your risk of negative effects. If you are not noticing any improvements in your condition in the first week of treatment, consult a doctor right away.


The dosages usually vary among patients. It depends on your response to treatment, weight (for children only), age, the severity of the medical condition, and other drugs that you may be using. Thus, doctors prescribe different dosages for their patients. You should avoid using Zovirax 200 mg or talk with a doctor if you are not sure what dosage is better for you. In addition, continue using this medication even if you feel well because if you stop the treatment suddenly without the doctor’s approval, symptoms may return. Therefore, your condition may become worse or more difficult to treat.

Missed Dose

If you miss a dose, you should take it as soon as you remember. If it is approaching the time for the next dose, simply skip the missed dose and continue the regular schedule as prescribed. It is not recommended to administer an increased dose of Acyclovir the next time to catch up because you may experience severe negative effects.


If you are taking more tablets than your physician prescribes, you may notice an overdose. Symptoms of overdose include severe dizziness, fast or pounding heartbeat, passing out, breathing problems, and others. In case you experience any of the symptoms listed above, stop taking Zovirax 200 mg and get medical help immediately. Discuss with your healthcare professional for more details.

Side Effects of Zovirax 200 mg

This medicine may give you some side effects. Adverse effects may disappear if your body adjusts to Acyclovir. Certain factors that may provoke negative effects are dehydration, overdose, and allergy. There are three types of side effects: mild, moderate, and severe.

Mild Side Effects

It is recommended to tell your doctor if you experience any of the following adverse effects or both of them at the same time. For example:

Moderate Side Effects

Commonly, patients can continue the treatment safely even if they experience any of the following adverse effects. Examples include:

  • Dizziness
  • Vomiting
  • Tiredness

Severe Side Effects

Rarely, this category of negative effects may occur due to an increased dose of Zovirax 200 mg. Therefore, you should interrupt using this medicine and ask for medical help right away. Moreover, your physician may be able to help you to avoid or prevent side effects. Check below some examples:

  • Bloody urine
  • Sudden vision change
  • Loss of consciousness
  • Seizures
  • Fever
  • Irregular heartbeat
  • Extreme fatigue

This article does not contain a complete list of side effects. Inform your doctor if you experience any of the adverse effects listed above or both of them at the same time.

Drug Interaction

There are certain substances and medicines that may interact with Acyclovir. It means that other drugs may change how this medicine works by reducing its effectiveness or even increasing the risk of adverse effects. Thus, share a list of products that you are using before taking Zovirax 200 mg. Examples include over-the-counter drugs, prescription drugs, supplements, vitamins, herbal products, and others. Check below some examples:

  • Acyclovir
  • Ibuprofen
  • Naproxen
  • Zoster vaccine, live
  • Tenofovir
  • Tobramycin
  • Tacrolimus
  • Sulfasalazine
  • Sirolimus
  • Remdesivir
  • Metrizamide
  • Methotrexate
  • Gentamicin
  • Everolimus
  • Diatrizoate
  • Cyclosporine
  • Cidofovir
  • Amikacin
  • Adefovir

This medicine may also interact with certain health conditions. For example:

  • Renal impairment
  • Hemodialysis
  • Dehydration
  • HUS

Talk to a doctor before taking Zovirax 200 mg because this document does not contain a full list of disease and drug interactions. Moreover, it is not allowed to stop, start, or change the dosages without the doctor’s approval because you may experience unwanted results.


Inform your doctor if you experience any of the following medical conditions before using Zovirax 200 mg. For example:

  • Kidney disease
  • Liver disease
  • Cancer
  • Surgery
  • Diabetes
  • Bone marrow transplant

Acyclovir may temporarily blur your vision or may make you drowsy or dizzy. Therefore, you should limit or avoid alcoholic beverages and marijuana (cannabis) during treatment because these effects may increase. Do not drive or operate machinery while you are on treatment with Zovirax 200 mg until you can do it safely.

Zovirax 200 mg may be used during pregnancy with the doctor’s approval because it may harm your unborn baby. In any case, consult a doctor before breastfeeding because Acyclovir passes into breast milk.


  • Store this medicine in dry and cool places away from direct sunlight. Hence, it is not allowed to keep this medication in the bathroom.
  • Keep away Acyclovir from pets and children because it may be harmful to them.

Additional information

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