Interactions are not expected. Do not use any other skin products on the same area of the skin without talking to your care team.

They need to know if you have any of these conditions:
-Immune system problems
-An unusual or allergic reaction to penciclovir, other medications, foods, dyes, or preservatives
-Pregnant or trying to get pregnant
-Breast-feeding

Visit your care team for regular checks on your progress. Tell your care team if your symptoms do not start to get better or if they get worse.
This medication manages the symptoms of the virus. It is possible to spread the virus to others. Avoid contact with others as directed by your care team. Talk to your care team about how to stop the spread of infection.

Keep out of the reach of children and pets.

Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Get rid of any unused medication after the expiration date.
To get rid of medications that are no longer needed or have expired:
-Take the medication to a medication take-back program. Check with your pharmacy or law enforcement to find a location.
-If you cannot return the medication, check the label or package insert to see if the medication should be thrown out in the garbage or flushed down the toilet. If you are not sure, ask your care team. If it is safe to put it in the trash, empty the medication out of the container. Mix the medication with cat litter, dirt, coffee grounds, or other unwanted substance. Seal the mixture in a bag or container. Put it in the trash.