The Ministry of Health advises women using the oral contraceptive Estelle-35 ED to see their GP or Family Planning clinic, after the product was recalled, last week.
Faulty packaging led to the discovery of one pack with a single white inactive tablet in place of a yellow active tablet in the blister strip.
Medsafe senior advisor Dr Stewart Jessamine said there is a small chance of women getting pregnant if an inactive pill is taken in the first or last seven days of the active pill cycle. Women are advised to continue taking the pill, using extra contraceptive precautions for the next seven days, or until they see a doctor.
Manufacturer Douglas Pharmaceuticals has made arrangements to reimburse patients for the consultation fees and prescription costs.
