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Famvir
Famvir is an antiviral used in the treatment of shingles or in certain cases, genital herpes.
General Information
This database does not contain every known side effect, adverse effect, or drug interaction. If you have questions about your medicines, talk to your health care provider. This information is for educational purposes only.
How Drug Works
When you take Famvir, it is absorbed into your bloodstream, and then converted into another drug called penciclovir. A virus infects the cells and begins to multiply over and over again, making new viruses. Penciclovir stops the herpes simplex virus types 1 and 2 from multiplying, which may reduce the symptoms of the outbreak and helps sores to heal faster.
How Taken
Famvir is taken by mouth exactly as prescribed. Famvir is most effective if taken as soon as herpes is noticed. For best results, space the doses at equal intervals throughout the day (and night if directed by your doctor). This will help ensure an even level of drug in the body at all times. Do not increase your dose or take this more often than directed. Your condition will not improve faster but the risk of side effects may be increased. Contact your doctor if your condition does not improve or worsens.
Possible Side Effects
- Headache
- Nausea
- Diarrhea
- Fatigue
If any of these effects continue or become bothersome, inform your doctor. Notify your doctor if you experience: vomiting, skin rash, confusion, stiffness. If you notice other effects not listed above, contact your doctor or pharmacist.
Warnings/Precautions
Tell your doctor if you have:
Famvir should be used only if clearly needed during pregnancy. Discuss the risks and benefits with your doctor. This medication may appear in breast milk. Consult your doctor before breast-feeding. Caution is advised in the elderly.
Overdose
For emergencies, seek medical attention immediately. For non emergencies, contact your local or regional poison control center at 1-800-222-1222.
Drug Interactions
Tell your doctor of any over-the-counter or prescription medication you may take including:
Do not start or stop any medicine without doctor or pharmacist approval.
Missed Dose
Try to take each dose at the scheduled time. If you miss a dose, take it as soon as remembered; do not take it if it is near the time for the next dose, instead, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up.
Storage
Keep this and all medications out of the reach of children. Store Famvir at room temperature between 59 and 86 degrees F (15 and 30 degrees C) away from heat and light. Do not store in the bathroom.
Pregnancy/Nursing
Famvir should not be used during pregnancy. If you suspect that you may be pregnant, talk to your doctor. For nursing mothers, it is unknown whether atorvastatin calcium is excreted in the breast milk. It is advised not to breast-feed while taking this medication.
More Information
For more information, talk to your doctor, pharmacist or health care provider.
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