it is thought this is the issue behind the Gripe Water investigation.
Currently the packaging states: “Woodward’s Grip Water contains oil of Dill herb and Sodium Hydrogen Carbonate and brings the rapid relief of wind and gripe.”
It also says: “Dill oil warms and relaxes the tummy, breaking down trapped air bubbles. Sodium Hydrogen Carbonate neutralises acid in the baby’s tummy. The results are usually a resounding burp.”
A spokesman for the Medicines and Healthcare products Regulatory Agency said other gripe waters were still available.
“The investigation relates to manufacturing issues,” she said.
A statement from Reckitt Benckiser said: "Following the acquisition of SSL plc at the end of 2010, as part of a standard procedure, Reckitt Benckiser reviewed all products in the SSL portfolio.
"As a precautionary measure it was decided to temporarily halt the manufacture and distribution of Woodward’s Gripe Water after identifying minor irregularities in the product’s licence.
"RB takes such matters very seriously, and is working closely with the licensing bodies to deal with the matter as quickly as possible, putting in place the necessary remedial action. We regret the inconvenience this is causing to the users of the product while it remains unavailable.
"Howeverthe quality and safety of all our products is our, and the regulators' first priority, and in our view this action is necessary."