Kalmegh may have interactions with anticoagulant, antihypertensive, immunosuppressant and hypoglycemic drugs. This study confirms its use to prevent fungus and mold in the body. http://japsonline.com/admin/php/uploads/633_pdf.pdf This study looks into at its effectiveness at killing the fungus, fusarium oxysporum. http://japsonline.com/admin/php/uploads/633_pdf.pdf..This research project shows kalmegh (andrographis) to be successful in reducing mold. http://moldillnesscureproject.weebly.com/andrographis.html
Neem. This study shows that need is an fungicide. https://www.nap.edu/read/1924/chapter/8 It combats
Trichophyton—an "athlete's foot" fungus that infects hair, skin, and nails;
Epidermophyton—a "ringworm" that invades both skin and nails of the feet;
Microsporum—a ringworm that invades hair, skin, and (rarely) nails;
Trichosporon—a fungus of the intestinal tract;
Geotrichum—a yeast like fungus that causes infections of the bronchi, lungs, and mucous membranes; and
Candida—a yeast like fungus that is part of the normal mucous flora but can get out of control, leading to lesions in mouth (thrush), vagina, skin, hands, and lungs.
For Animals--According to veterinarian Dr. Wynn, who said that "I do not use this herb commonly, but that it has potential uses for the items discussed here. Large doses can cause gastric upset, loss of appetite and vomiting. The use of Andrographis during pregnancy and lactation should be avoided". Since this is a cooling herb its use should be limited to two weeks at a time.