In the pharmaceutical industry, Mefenamic Acid 500 mg is a prominent Non-Steroidal Anti-Inflammatory Drug (NSAID) belonging to the fenamate class. As a pharmacist and manufacturer, I view Mefenamic Acid as a specialized analgesic particularly prized for its efficacy in gynecological and dental applications. It is often considered more effective than paracetamol for inflammatory and spasmodic pain.

Primary Clinical Uses

• Dysmenorrhea (Period Pain): The most common indication. It reduces uterine contractions and the associated pain/cramps.

• Menorrhagia: Used to reduce excessive menstrual blood loss (when organic pathology is ruled out).

• Mild to Moderate Acute Pain: Effective for dental pain, post-operative pain, and musculoskeletal injuries.

• Inflammatory Conditions: Symptomatic relief of Rheumatoid Arthritis (including Still’s Disease) and Osteoarthritis.

• Headaches & Fever: Used for tension headaches and as an antipyretic to reduce high body temperature.

Mechanism of Action: The “Dual” Inhibitor

What makes Mefenamic Acid unique compared to other NSAIDs is its dual approach to managing pain:

Inhibition of Synthesis: Like most NSAIDs, it inhibits the COX-1 and COX-2 enzymes, preventing the formation of prostaglandins from arachidonic acid.

Receptor Blockade: Uniquely, Mefenamic Acid is also believed to block prostaglandin receptors that have already been formed. This makes it exceptionally effective for uterine pain, where prostaglandin levels are already high.

The Manufacturer’s Perspective: Formulation & Export

From a production and global trade standpoint, Mefenamic Acid 500 mg is a high-volume essential product:

• Bioavailability Challenges: Mefenamic Acid is a BCS Class II drug (low solubility, high permeability). At our WHO-GMP facility, we focus on micronization of the API and the use of specific surfactants to ensure the 500 mg tablet meets the strict dissolution standards of BP/USP/IP.

• Gastric Protection: Due to its high potential for GI irritation, we often recommend patients take it with food. As a manufacturer, we ensure our Product Information Leaflet (PIL) clearly highlights this.

• Stability for Export: We utilize Alu-Alu or high-barrier PVC/PVDC blister packaging to protect the product from moisture, ensuring a 36-month shelf life for export to Zone IVb regions (Africa, SE Asia).

• B2B & Dossier Support: This is a staple for women’s health distributors. Our Mumbai facility provides full CTD/eCTD Dossiers to support international registration against the innovator (Ponstan).