Pharmacists are being reminded about the dangers of prescribing little blue pills, to men who should not really get them.

The Ministry of Health has been auditing over the counter sales of Viagra, and found it has been sold to men whose blood pressure was outside the recommended limits.

Pharmacy Guild chief Andrew Gaudin says the criteria are there for a reason.

He says it is really important pharmacists supply the drug only to those who meet the requirements, and it should only be pharmacists who have done the right training.

The audit also found controlled drugs left on shelves rather than in safes, and some medicine fridges weren't at the right temperature.