Blackmores chief executive Henfrey resigns

Blackmores chief executive Richard Henfrey has resigned from the vitamin company after 18 months on the job.

Blackmores CEO Richard Henfrey is resigning, although he will stay on until his successor is found. (AAP)

Health supplement company Blackmores says its chief executive officer has resigned after 18 months in the job.

Richard Henfrey, who has been with the company in a variety of executive roles since April 2009, will remain in the position while the board searches for a new CEO.

The company did not state a reason for his resignation.

Mr Henfrey replaced Christine Holgate, who left to lead Australia Post.

Ms Holgate, once described as Australia's most important woman, led the company to a huge surge of expansion during her nine years at the helm.

Blackmores shares hit an 18-month low last week after the vitamin maker told investors not to expect an increase in sales to China.

Blackmore shares were down 3.19 per cent, or $3.04, to $92.16 at 1132 AEDT.