A stable effervescent tablet granule or powder composition free from excipients that may react with an effervescing organic acid component, comprising: an effective amount of a antidiabetic drug, an effervescing organic acid component, an effervescing base component buffers, to modulate gastric ρïí after ingestion, essentially free of solium wherein said composition is completely solubilised within 5 minutes without stirring in 3 to 8 fluid ounces of water at between 5-20° C.
