TA-65 is a single molecule that is extracted from the natural astragalus plant. It is found in the plant in very small concentrations. Each TA-65MD capsule contains about 8 mg of the purified molecule formulation that has been produced under a proprietary process. If you would eat raw astragalus, you would need to eat several pounds a day to equal a single TA-65MD capsule. Because a single pound of astragalus contains close to 647mg of Iron which can cause Iron poisoning, we do not suggest raw astragalus. Some folks may inquire how much they would need to eat if they went to a specialist store that could provide an astragalus extract. We have not specifically tested these extracts, but we have been told that the specific TA-65 molecule is often lost in the normal extraction process used by other supplement manufacturers. The only way to safely and assuredly get a bioactive dose of this molecule is by taking TA-65MD capsules.