'Hair cure of the human' may harm cats
Dec 2005
You've probably heard of people using "hair of the dog" in an attempt to fight a
hangover, but did you know that a "hair cure of the human" can actually harm or
kill an unsuspecting cat?
Topical solutions containing minoxidil (like Rogaine) are used to safely promote
hair growth in humans, but pose serious health risks to cats. This occurs when
the product has been applied intentionally to areas of hair loss on the cat or
where they were accidentally exposed to the solution via licking their human
family member's scalp or accidentally walking through the solution if spilled.
Since 2001, six cases involving minoxidil exposure were reported by the ASPCA
Animal Poison Control Center. Of these cases, four of the cats died, while two
fully recovered after prompt and aggressive veterinary treatment.
Dr. Sharon Gwaltney-Brant, APCC medical director and veterinary toxicologist
says: "Pet owners need to be aware that even minimal amounts of minoxidil can
result in a serious or even fatal situation."
According to APCC data, clinical signs include lethargy, a severe drop in blood
pressure, accumulation of fluid in the lungs and damage to the heart muscle,
which can result in death from cardiac failure. "The lethargy and blood pressure
drop typically develop in about 12 hours," says Gwaltney-Brant, "and the cardiac
effects generally occur three to four days following exposure if treatment is
not sought quickly."
While the potential for clinical problems exists for dogs and other animals,
cats may be especially sensitive because they lack a specific enzyme necessary
for breaking this drug down in their bodies.
APCC experts offer the following tips to avoid accidental poisoning:
* Never apply minoxidil products to your pets.
* Human application of the product should occur in a room that is not accessible
to pets; do not let pets lick treated areas.
* Clean up any spills thoroughly and promptly.
If you suspect that your cat has come into contact with a minoxidil-containing
product, or any other potential poison, contact your veterinarian
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