Table 3.

Assay results for the determination of methocarbamol and guaifenesin in laboratory prepared mixture applying the proposed method

Ratio MET: GUF	Parameters
	Methocarbamol			Guaifenesin
	Conc. taken (µg/mL)	Found	% found	Conc. taken (µg/mL)	Found	%found
0.5:1	5.0	4.96	99.2	10.0	9.88	98.8
1:0.5	25.0	25.06	100.24	12.5	12.2	97.6
1:1	13.0	12.93	99.46	13.0	12.9	99.23
1:2	15.0	14.58	97.20	30.0	30.4	101.33
2:1	10.0	10.23	102.30	5.0	4.98	99.6
Mean ± SD			99.63 ± 0.54			98.54 ± 0.84