Prices in the US increased at an annual rate of 8.3% last month, remaining high even as petrol costs eased.
While the annual rate retreated from 8.5% in July, the cost of levitra online prescription food, housing and medical care continued to climb, the Labor Department has said.
Economists had hoped to see more widespread easing of the inflationary pressures.
Inflation remains a key issue for Americans, putting pressure on the White House and other policymakers.