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Alizin is used to terminate pregnancy in bitches. It is given by injection and can be used up to 45 days after mating. It is best given during the early stages of pregnancy if possible. Alizin works by acting against progesterone in the body, resulting in loss of the pregnancy. Occasionally Alizin is prescribed by vets for other reasons due to its anti-progesterone effects.
Accidental human injection should be avoided, with extra care taken with women of child-bearing age. Due to the oily nature of this injection, it is important for the operator to avoid accidental injection into a human finger, as the resulting reaction can potentially lead to loss of the finger.
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Below are some recent questions we've received regarding Alizin Injection for Dogs, including answers from our team.
Can I mate my bitch on her next season after Alizin or do I have to wait?
Alizin will not affect your dogs future fertility as there is no residual action. However most people would let their dogs have one season before another mating since abortion due to Alizin can be stressful for the dog- this allows her time to get back to normal.
My 9month old bitch mated on her 6 day on season could she get pregnant
If you could be certain it is just the 6th day then pregnancy is unlikely. However the start of a season can be very slight and difficult to notice sometimes. If the bitch allowed genuine mating to occur then pregnancy is certainly possible. If the male was just interested but failed to get anywhere then you do not need to worry. If in doubt, it is safe and advisable to have the Alizin injection to prevent the chances of an unwanted pregnancy..
Hi, does this drug work after recommended dosage so the bitch is protected if mismatch again in short time? Next day after injection?
This treatment is best given after the end of the season (oestrous) and so the bitch will not be receptive to mating at that time anyway. If the treatment is given sooner than this, it should still be effective as the drug persists in the body for a few days and is not excreted immediately. The normal treatment is 2 injections, 24 hours apart anyway.