Have asked here to make analogue of following formula (from England): Pyridostigmine bromide BP Mestinon tablets 5 mg; Keltrol 1% 2.5 ml; Purified water to 5 ml.

As a source for Pyridostigmine Br, you should use 10 mg Mestinon tablets. Half a tablet is suspended after fining with 2.5 ml of a 1% plossing of xanthan gum in water, and further diluted with water up to 5ml.