Excipients LAM-TCNQ LAM-BTB LAM-PA % Recovery Pyrrolidone 99.13 99.76 99.86 Lactose 98.61 100.22 100.30 Talc 100.40 99.29 100.46 Magnesium stearate 100.17 99.68 98.97 Starch 99.58 101.42 100.89

Table 4: Recovery of lamotrigine in presence of different excipients.