What are the sources of suspending agents?

Suspending agents are typically derived from natural and synthetic sources. Natural sources include plant-based polysaccharides like xanthan gum, guar gum, and alginates, as well as animal-derived substances like Gelatin. Synthetic sources often involve polymers like hydroxypropyl methylcellulose (HPMC) and polyvinyl alcohol (PVA). These agents help maintain the uniform distribution of solid particles in liquid formulations by preventing settling.