Many herbs can build immunity. Echinacea, ginseng, mushrooms, goldenseal, yellowrrot, rosemary, licorice, astragalus, burdock, milk thistle seed, white willow, elderflowers, catnip, yarrow, boneset, hawthorn, garlic, and dandelion work to improve the immune system. In cases of depressed immunity, take high potency green superfoods daily. The active ingredients in “green drinks” can detoxify the blood. Whole grains, fresh fruits, and vegetables should be consumed at every meal.

Aromatherapy and laughter are great medicines to try.

Some herbs improve immunity by strengthening the lymphatic system. Red clover, mullein, cleavers, barberry, and baptisia (wild indigo) are the most useful.

The sap from a pencil cactus has always worked for warts. (Gotta make sure you cover it after you put it on because, the sap can make you go temporarily blind if you get it in your eyes) Drugstore methods never worked for me. Neither did ACV (apple cider vinegar) or duct tape ... Pencil cactus was a miracle cure. The only hang up is finding a pencil cactus.
For some, the sap can irritate skin. This chemical burning mechanism is the primary reason the sap has been promoted as a remedy for skin ailments and tumors. It is believed Amazon Indians first began applying the sap to remove warts and treat leprosy. I've heard fig leaf can be used in the same manner.
Ref:

A testimony from

It has a very benefcial characteristic that I can vouch for, though, and that is that it is dynamite on warts. As a kid my hands were covered in big unsightly warts and I used to dab the sap on each of them from time to time and within a few months my warts disappeared never to return (on my hands). By middle age (late 40s) I was again pestered by planters warts on the underside of both feet which resisted every caustic cure available on the market for more than two years. I was lucky enough to secure a rubber hedge plant (banned her in Australia) and I dabbed drops of the sap on these warts and covered them with band aids to prevent the sap being rubbed off too readily. I did this about once a week for a few weeks and, being very busy at the time, forgot about about them until showering one morning, when I realised there was not a trace of a wart left...and 10 years later still none!
Trevor Payne, sign-up@tpg.com.au

-Sol