The ECB slashed interest rates below zero and unveiled a staggeringly large money-printing programme, which sees billions of euros injected into the bloc each month.
But in a major setback, the ECB is tomorrow set to revise inflation forecasts for the eurozone down, according to reports.
The news promptly sent the euro tumbling against the dollar and the pound.
Markets had hoped small signs of growth in the region would be enough to persuade the central bank, led by Mario Draghi, to scale back the incredible measures.
German politicians have also been been pressurising the ECB to change tack.
But the disappointing outlook for inflation means policymakers are unlikely to consider backing down over the money-printing programme and even less likely to raise interest rates.
Policymakers are expected to predict inflation will be at a sluggish 1.5 per cent over the next three years.
Low inflation can be seen as a sign of weak consumer demand and ailing economy. Read More