The Durex-to-Dettol firm revealed another 2 per cent sales hit from the ransomware attack in June, which significantly disrupted its manufacturing and orders systems across a raft of markets, including the UK.
It also announced a corporate overhaul to reorganise the firm into two divisions - its consumer health business, including recently acquired US infant formula company Mead Johnson, and a home and hygiene arm.
The group reported a 1 per cent fall in group net revenues for the three months to the end of September as it blamed the cyber attack and difficult trading in a number of its markets, including the UK.
It slashed its annual sales outlook as a result, saying it now expects like-for-like sales to be flat over 2017 - down from an already downgraded previous expectation for growth of 2 per cent.
The group had alerted over sales in July, when it warned of a permanent hit to sales after the massive worldwide cyber attack wrought havoc across its factories, wiping 2 per cent off revenues in the quarters that have followed.
Reckitt said in its latest update it was still working to resolve the impact of the attack, with a backlog in its factories still “not fully caught up”.
Rakesh Kapoor, chief executive officer of Reckitt, said the third quarter was a “soft quarter as we experienced both the tail end of known issues, and the impact of a continuing challenging market environment”.
Mr Kapoor said he will also take charge of the consumer health unit, which accounts for 60 per cent of sales, following the shake-up.
Rob de Groot, currently head of Europe and North America, will lead the hygiene and home unit, which includes brands such as Air Wick fresheners and Cillit Bang cleaners.
Reckitt aims to have completed the overhaul and fully integrated Mead Johnson Nutrition - which it bought for £16.3bn - in the first quarter of next year.