Table 1.

Reduction in PVC roughness factor (Rq; fold) in the presence of different additives.

PVC Additive	Reduction in Rq (fold)	Reference
Telmisartan Sn(IV)	9.4	Current work
Naproxen Sn(IV)	5.2	[30]
Ciprofloxacin Sn(IV)	16.6	[32]
Furosemide Sn(IV)	6.6	[33]
2-(4-Isobutylphenyl)propanoate Sn(IV)	6.2	[22]
Melamine Schiff base	6.0	[11]
Biphenyl-3,3′,4,4′-tetraamine Schiff base	3.6	[13]
1,2,3,4-Triazole-3-thiol Schiff base	3.3	[34]
Polyphosphate	16.7	[29]