The proposed acquisition by Glanbia Co-operative Society of Glanbia Ireland has been cleared by the Competition and Consumer Protection Commission.
In November, Glanbia said it was selling its 40% interest in Glanbia Ireland to Glanbia Co-op, which is owned by farmers who supply milk to the company, for €307m.
Glanbia Co-op already holds the remaining 60% off the country's biggest dairy processor.
Glanbia co-op, owned by farmers who supply milk to the company, is best-known to shoppers for products including Avonmore milk, Kilmeaden and GAIN Animal Nutrition.
Glanbia Ireland is the largest milk processor and grain buyer in Ireland, producing a range of value-added dairy ingredients and consumer products as well as selling farm inputs.
It operates 11 processing plants, 52 agri retail branches and has over 2,000 employees.
In the 2020 financial year, Glanbia Ireland generated €1.906 billion in revenue and a profit after tax of €60m.
It has a market presence in the UK, France, Germany, UAE, the US, North Africa, Japan and China and it currently exports to over 80 countries.
