Gliclazide: Dose
Initially, 40–80 mg daily, adjusted according to response; up to 160 mg as a single dose, with breakfast; higher doses divided; max. 320 mg daily
Sub-section
Gliclazide (Non-proprietary)
Tablets, gliclazide 40 mg, net price 28-tab pack = £3.36; 80 mg, 28-tab pack = £1.05, 60-tab pack = £1.49
Above is a section from the latest BNF so if needed your GP could increase the dose. He/she could also prescribe the larger tablet and significantly cut costs.
The treatment did not agree with me so I was soon off it and onto other meds.