Amla powder is simply dried and ground fruit. The extract is made differently: active compounds are extracted from the raw material and concentrated. The composition contains Emblica officinalis extract: 500 mg per 2 capsules.
The powder is neither worse nor better — it is simply less concentrated and is more often used in cooking or teas, whereas the capsule extract is more convenient to fit into a daily routine without taste or smell.
It is important to understand that neither the extract nor the powder is a medicine. This is a plant-based dietary supplement.