Tyratech's H1 pretax loss is broadly stable at $1.52m, from a loss of $1.54m. Total gross revenue was $4.1m, from $3.5m.
"We expect Vamousse to continue to grow during the second half of the year, yet at a slower pace mainly due to an unexpected category contraction in the US," the company said.
"It will impact our top line sales and we are adjusting our level of expenses accordingly, notwithstanding these actions the board believes the net loss for the year will also be significantly below current market expectations.
"With the back to school season starting, the market could revert to stronger growth, but given the challenges of making an accurate prediction for the end of the year we believe it is prudent to adopt a more cautious approach to our growth forecasts.
"However, we do still expect good growth of our sales year over year, yet at a slower pace than previously expected."
(LON:TYR) TyraTech Inc share price was -0.25p at 2.75p
(LON:TYRU) Tyratech Inc share price was -1p at 2.38p