Two varieties of Salvia have been tested in small trials; one trial provided evidence that Salvia lavandulifolia (Spanish sage) may improve word recall in young adults, and another provided evidence that Salvia officinalis (Common sage) may improve symptoms in Alzheimer's patients. Many plants used as rasayana (rejuvenation) medications are potent antioxidants. Neem appears to have beneficial pharmacological properties. Turmeric and curcumin have shown effectiveness in preventing cancer in vitro.
Recently, there are some PubMed indexed journals being published in the field of Ayurveda.