Certified Pharmaceutical Raw Materials

Raw Material Compliance in Pharmaceuticals: FDA & GMP Guide

13 Feb, 2026

I. Definition of Raw Materials – Regulatory Perspective

1. US FDA (21 CFR & FDA GMP Guidance)

Raw materials are any substances used in the manufacture of a drug substance or drug product, including active ingredients, excipients, processing aids, reagents, solvents, intermediates, and starting materials, that may affect the identity, strength, quality, or purity of the drug.

Key Regulatory References :

• 21 CFR 210 & 211
• ICH Q7 (adopted by FDA)

FDA Expectation :

• Raw materials must be tested or verified before use
• Suppliers must be qualified
• Materials must be traceable and controlled
• Any material that can impact product quality is considered a raw material, even if it is removed later (e.g., solvents, reagents)

2. EMA (EudraLex & ICH Guidelines)

Raw materials are all substances used in the manufacture of an active substance or medicinal product, including starting materials, intermediates, reagents, solvents, excipients, and materials used in processing, which can influence the quality, safety, or efficacy of the medicinal product.

Key Regulatory References :

• EudraLex Volume 4 (EU GMP)
• ICH Q7, Q11

EMA Expectation :

• Clear distinction between starting materials and intermediates
• Defined specifications where appropriate
• Full supply chain transparency
• Risk-based control of raw materials impacting CQAs

3. WHO (WHO GMP & Technical Report Series)

Raw materials are any substances, whether active or inactive, used in the manufacture of a pharmaceutical product, including active ingredients, excipients, starting materials, intermediates, solvents, reagents, and processing aids.

Key Regulatory References :

• WHO GMP for Pharmaceutical Products
• WHO TRS 986, 957, 1010

WHO Expectation :

• All raw materials must be approved, tested, and released before use
• Proper labeling, storage, and status identification
• Control of materials intended to be removed (e.g., solvents)
• Strong focus on developing countries and climatic conditions

Regulatory bodies such as USFDA, EMA, and WHO require that all raw materials meet strict quality standards and are controlled through validated processes, specifications, and supplier qualification programs.

II. Types of Raw Materials in Pharmaceuticals

In API manufacturing, the raw materials used include starting materials, intermediates, reagents, and solvents, all of which directly affect the quality of the API. The API itself then becomes a raw material for drug product manufacturing, highlighting the continuous and interconnected role of raw material control across the pharmaceutical supply chain.

In drug product manufacturing, the key raw materials used are API(s), excipients, packaging components, certain process aids (e.g., filters, gases) that can affect quality, safety and efficacy of the drug product.

Pharmaceutical raw materials can be broadly classified into the following major categories.

1. Drug Substance or Active Pharmaceutical Ingredients (APIs)

APIs are the active components responsible for the therapeutic effect of a drug. Once the manufacturing process is complete, the output of drug substance manufacturing, the API becomes a raw material for drug product (finished dosage form) manufacturing.

Examples: Paracetamol, Metformin, Rosuvastatin, Insulin analogs (biologics)

The API is supplied with a Certificate of Analysis (CoA) and released by Quality Assurance. It must meet approved specifications for identity, purity, potency, and impurities.

In drug product manufacturing, the API is treated as a critical raw material, combined with excipients to produce the final dosage form (tablets, capsules, injections, etc.).

Role of the API is to provide pharmacological activity, to determine dose strength, to define therapeutic indication, to influence stability and bioavailability.

APIs undergo extensive characterization (identity, purity, potency) and are regulated under ICH Q11 and Q7.

2. Excipients

Excipients play a critical and multifunctional role in drug product (finished dosage form) manufacturing. Although pharmacologically inactive, excipients are essential to ensure the quality, safety, efficacy, manufacturability, and patient acceptability of the drug product. Regulatory authorities (US FDA, EMA, WHO) treat excipients as critical raw materials due to their impact on Critical Quality Attributes (CQAs).

Excipients improve manufacturability, enhance stability & shelf life, control drug release (immediate/controlled) and improve patient acceptability.

• Fillers / Diluents Provide bulk for tablets or capsules. Examples: Lactose, MCC, mannitol
• Binders Help ta