As natural products, they all contain a variety of components. “Cations” and “Anions” would pertain particularly to the acidic compounds as noted below.
The seed kernels of neem yield about 10% of a fixed oil, comprised primarily of glycerides. The yellow, bitter oil has a garlic-like odor and contains approximately 2% of bitter principles including azadirachtin, azadiradione, azadirone, gedunin, nimbidin, nimbin, ninmbolide, nimbinin, nimbidol, margolene, mahmoodin, salanin, meldenin, vepinin, and other related limonoid triterpenes.
Azadirachtin is the most active insecticidal component of neem, with a yield of about 5 g from 2 kg of seeds. All parts of the tree yield beta-sitosterol. The leaves also contain quercetin, gallic acid , catechin, carotenes, and ascorbic acid. 2 Low concentrations of aflatoxin have been reported. There are inadequate clinical trials to support specific therapeutic doses of neem. Ref: https://www.drugs.com/npp/neem.html
Amla, better known as Indian Gooseberry, is widely used in the Ayurvedic medicine system of India. Amla is extremely rich in vitamin C, having thirty percent more than oranges. It’s packed with many vitamins, minerals, tannins and other helpful nutrients. Amla contains very potent antioxidants, alkaloids, cytokine-like substances, tannins as well as vitamins, minerals and amino acids. Ref: http://www.herbslist.net/amla.html
Turmeric contains the chemical curcumin. A member of the ginger family, turmeric is a perennial plant that is cultivated throughout tropical Asia, India, and China. Ref: http://www.webmd.com/vitamins-supplements/ingredientmono-662-TURMERIC.aspx?activeIngredientId=662&activeIngredientName=TURMERIC