Hello,
I understand your concern and can imagine the pain you are in.
Shingles is not an easy thing to deal with. However it passes and that's good news.
Your doctor prescribed you an
antiviral (since shingles are caused by a virus) and a pain killer (yes, you definitely need that).
As you may know, shingles are cause by the reactivation of the
HSV virus that lies dormant for years in your spine. When the immune system, for some reason, weakens, HSV wakes up and causes shingles.
Olive leaf extract is known for its immune boosting properties, so by taking it you will be doing a favor to your immune system and telling the virus to go back to sleep. This extract will also shorten the time of the symptoms.
So I say yes, by all means take it! As long as you also continue with the medication that your doctor has prescribed you.
Taking care of your immune system by maintaining a healthy diet and lifestyle, your will drastically cut the chances of shingles ever reoccurring.
Wishing you a fast recovery and all the best.