"They have been sentenced with the highest penalty (under the drug law) as they committed crimes against humanity," Dhaka court judge Abdur Rashid said while pronouncing the verdict.
Two of the three convicted officials of Adflame pharmaceuticals were present as the judge pronounced the verdict while the third accused was tried in absentia as he is on the run.
The court also fined each of them Taka 2 lakh (USD 2,600 approx) alongside the 10 years of jail term while it acquitted two suspects as allegations against them could not be proved beyond doubt.
The syrup was tested after 76 children died and several hundred others developed kidney complications after consuming the drug for ordinary fever or minor pain.
Two of the convicts - director of Adflame Helena Pasha and manager Mizanur Rahman were immediately sent to jail while the court said the sentence of absconding quality in-charge Nigendra Pasha Bala would start the day he would be arrested or surrenders.