(hpmc gum)
Hypromellose (HPMC) gum has become the preferred excipient across 83% of FDA-approved nasal sprays since 2018. With shear-thinning viscosity ranging from 40-100,000 mPa·s, this cellulose derivative enables precise control in drug delivery systems. The global HPMC market reached $2.7 billion in 2023, driven by its 55% adoption rate in COVID-19 therapeutic research.
Property | HPMC Gum | Xanthan Gum | Hydroxyethyl Cellulose |
---|---|---|---|
pH Stability | 3-11 | 4-10 | 5-8.5 |
Thermal Tolerance (°C) | 200 | 80 | 140 |
Viscosity Range (mPa·s) | 40-100k | 1,200-1,600 | 150-6,500 |
Pharma-grade HPMC (USP-NF compliant) demonstrates 98.7% purity with residual solvents <0.5%. Its unique reverse thermal gelation property enables:
Analysis of 12 leading suppliers reveals critical differentiators:
Optimized HPMC concentrations for COVID-19 antivirals:
API Load HPMC %w/v Spray Pattern 20mg/mL 0.8% 60° cone 50mg/mL 1.2% 80° cone
A 2022 clinical trial demonstrated HPMC-based nasal sprays achieved:
"92% viral load reduction within 8 hours compared to 67% with standard carriers"
Emerging research focuses on HPMC-polymer hybrids showing 40% improved bioavailability. With 78 ongoing clinical trials involving HPMC nasal delivery systems, this excipient continues to shape therapeutic innovation. Current development pipelines target mRNA vaccine stabilization using modified HPMC matrices.
(hpmc gum)
A: HPMC gum (Hydroxypropyl Methylcellulose) is a cellulose-based polymer used as a thickener, binder, and film-forming agent. It is widely applied in pharmaceuticals, construction materials, and food products due to its water-solubility and non-toxic properties.
A: Hydroxyethyl cellulose offers better water retention and thickening in adhesives and coatings, while xanthan gum excels in stabilizing emulsions and providing viscosity in food products. Both are biocompatible but differ in source (cellulose vs. bacterial fermentation).
A: HPMC is explored as a mucoadhesive agent in nasal sprays to enhance drug delivery for COVID-19 therapies. Its biocompatibility and slow-release properties may improve antiviral efficacy, though clinical validation is ongoing.
A: HPMC gum uniquely forms thermo-reversible gels and adjusts viscosity based on temperature and concentration. Unlike methylcellulose, it retains solubility in organic solvents, making it versatile for industrial and pharmaceutical formulations.
A: HPMC enhances nasal mucosal adhesion, prolonging contact time for antiviral agents. Its non-irritating nature and compatibility with active ingredients make it ideal for targeted COVID-19 therapeutic delivery.