0.5 mg/kg daily for a maximum period of forty days. The course of tablets should commence preferably fourteen but at least seven days before the effect is required. A series of postponement courses may be given provided the bitch is not medicated more than twice in any 12 month period.

Normal dosage regimen: 2 mg/kg daily for eight days. The course of tablets should commence at the onset of pro-oestrus as indicated by the presence of both haemorrhage and vulval swelling. The stage of the oestrus cycle may be confirmed by the examination of vaginal smears.

Extended dosage regimen: 2 mg/kg daily for four days followed by 0.5 mg/kg daily for 16 days.

The use of this prolonged prevention course is advised in first season bitches, and may also be beneficial in bitches with a history of false pregnancy, in some cases where other abnormalities of the oestrus cycle are known to occur and when the animal to be medicated is housed with other bitches.

The recommended dosage is 2.5 to 5 mg per cat every two to three days until the lesions begin to regress then once weekly until a satisfactory response is obtained. In some cases it may be necessary to give a maintenance dosage of 2.5 mg per cat weekly or fortnightly to prevent recurrence of the condition. Alternatively, repeat courses of treatment may be given as required.

The dosage should be adjusted according to response and the following is offered as a guide:

In a minority of animals, it may be necessary to prescribe a low maintenance dose on a once weekly basis or to give repeat short courses of medication as required.

Treatment with Ovarid in conjunction with re-training appears to increase the level of success in cases of undesirable behaviour.