API - Active Pharmaceutical Ingredients
APIs (Active Pharmaceutical Ingredients) denote drug dosage, which means the primary chemicals that are behind the efficacy of the drug, while different chemicals including APIs are used in specified rations in finished formulation in the production process of a specific drug.
1. Active pharmaceutical ingredient and bulk active are similar terms that are used in medicine, while the term active substance is often used for natural products.
2. An active ingredient is the biologically active ingredient in a pharmaceutical drug or pesticide.
3. An intermediate is a chemical compound that is in the process of becoming an API from raw material.