We strongly recommend that people not undertake any therapies without consulting medical professionals.
Many different treatments and supplements are being investigated but require very stringent studies before they can be qualified as appropriate for relief of symptoms or supporting recovery.
You can consult a medical professional if you can find any willing to talk about herbal remedies. Mine flatly refuses to do so even if there is no allopathic remedy. So you are on your own. I use other remedies for virus infection but next time I will consider olive leaf.