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Megestrol

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Product Info
How to Use
Ingredients
Customer Reviews
Q&A
Product Info
What is Megestrol?

Megestrol is a synthetic chemical similar to the female hormone progesterone and is used to postpone estrus (female's heat cycle) and help end a false pregnancy. Megestrol requires a prescription from your veterinarian, and is sold per tablet.

For:

Dogs

Benefits:
  • Easy to administer
  • FDA approved for use in dogs
How it Works:

Megestrol is a female hormone that through its actions regulates the female heat cycle and can be used to alleviate false pregnancy.

Cautions:

Megestrol should not be used in pregnant animals. Tell your veterinarian if your pet is being given insulin. Megestrol may decrease the effect of insulin and your pet's blood sugar may increase. Also contact your veterinarian if your pet experiences increased thirst or urination, depression, mammary gland enlargement, temperament changes, vaginal discharge, vomiting, or yellow gums while being treated with Megestrol. Other drugs may also interact with Megestrol, so talk to your veterinarian or pharmacist before using any prescription or over-the-counter medications.

Brand Name:

Ovaban (Schering-Plough)

Generic Name:

Megestrol

What is megestrol:

Megestrol is a synthetic chemical similar to the female hormone progesterone. Megestrol is a prescription medication FDA approved for use in dogs. Megestrol is available as 20mg scored tablets. Megestrol is used to postpone estrus (female heat cycle) and to alleviate false pregnancy. When used to postpone estrus, the dose and duration of treatment depends on the stage of the cycle when therapy is begun. When used to treat false pregnancy, the usual dose is 1mg/pound given once a day for 8 days. Megestrol may also be used for purposes other than those listed in this medication guide.

What should I discuss with my veterinarian before giving megestrol:

Tell your veterinarian if your pet has diabetes or a history of blood clots, Addison's disease, uterine disease or congestive heart failure. Tell your veterinarian if your pet is pregnant or if your pet is lactating.

What is the most important information I should know about megestrol:

Notify your veterinarian if your pet develops any side effects while taking megestrol.

How should this medication be given:

Give this megestrol exactly as directed by your veterinarian. If you do not understand the directions, ask your pharmacist or veterinarian to explain them to you. Allow pet to drink plenty of water. Megestrol tablets may be given whole or crushed and mixed in food. Store megestrol at room temperature, away from moisture and heat.

What should I avoid while giving megestrol:

There are no restrictions on food or activity during treatment with megestrol unless your veterinarian directs otherwise. Do not give megestrol to pregnant dogs or dogs with mammary tumors. Megestrol should not be given for more than two consecutive treatments.

What are the possible side effects of megestrol:

If any of the following serious side effects occur, stop giving megestrol and seek emergency veterinary medical attention; an allergic reaction (difficulty breathing, swelling of the lips, tongue, face, or hives), sudden severe headache; changes in vision; swelling in a leg. Other less serious side effects may also occur. Talk to your veterinarian if your pet experiences nausea or vomiting, dizziness, mild shortness of breath, weakness, headache, vaginal bleeding, sweating, and insomnia. Side effects other than those listed here may also occur. Talk to your veterinarian about any side effect that seems unusual or that is especially bothersome.

What other drugs will affect megestrol:

Tell your veterinarian if your pet is given insulin. Megestrol may decrease the effect of insulin and your pet's blood sugar may increase. Drugs other than those listed here may also interact with megestrol. Talk to your veterinarian or pharmacist before giving any prescription or over the counter medications.

How to Use
Directions:
  • Megestrol is a prescription medication used to postpone the female heat cycle (estrus) and to treat false pregnancy in dogs.
  • Megestrol should not be given to dogs prior to or during their first estrus cycle, or to pregnant dogs.
  • Megestrol is a synthetic chemical similar to the female hormone progesterone.
  • Megestrol is for use in dogs only. Do not give to cats.
  • Allow pet to drink plenty of water.
Tip:

Megestrol tablets may be given whole or crushed and mixed in food.

Dosage:
Dogs:
Weight
Dosage
All weights
When used to postpone estrus, the dose and duration of treatments depends on the stage of the cycle when therapy is begun. When used to treat false pregnancy, the usual dose is 1mg/lb of pet's body weight given once a day for 8 days
Cats:
Do not use!
Horses:
Do not use!
Storage:

Should be stored at room temperature and protect from light.

Ingredients
Megestrol:
Active Ingredients (per tablet)
Amount
Megestrol
20 mg
Other Ingredients: Acacia Spray Dried, Colloidal Silicon Dioxide, Corn Starch, Dicalcium Phosphate Dihydrate Powder, Lactose Hydrous Impalpable, Magnesium Stearate, and Pregelatinized Starch.
Customer Reviews
Megestrol is rated 3.0 out of 5 by 6.
Rated 5 out of 5 by from so helpful.... My cat had a tendency to lick and scratch himself raw and bloody and I worried about infections. My vet suggested this and if it worked my cat would have to be on it the rest of his life. Gave it a shot and lo and behold it worked!!! 1/4 every day for 2 weeks to start and cutting it back till it became just once a week. Only side effect so far is that my cats gained a lot of weight =/ but the plus side is no more licking till he's raw and sore anymore and no worries of infection!
Date published: 2014-06-12
Rated 5 out of 5 by from This product does what my Vet intended it for. My cat had itchy, scabby bumps around her neck, head and down her back near her tail. She was miserable. After taking one 1/4 pill (5mg.) twice a week the sores cleared up! My vet said she has a hormonal imbalance. It also helps her mood. Before being on this medication, she would constantly attack my other cat. After a few months of giving it to her, it dawned on me that I use to administer this exact same medicine to a person I was caretaking. She was taking it to help improve her appetite. So, be ready for a hungrier then usual animal! ~Watch my video of Kat to see how well she's doing now~
Date published: 2013-12-16
Rated 3 out of 5 by from Ovaban Vet gave "ovaban" to my kitty for a skin condition; said it is a fungal condition. Montgomery pulled out his hair and bit at his skin until it was gooey and runny! Horrible. I quarter a 20 mg pill and his condition totally cleared up.
Date published: 2011-08-18
Rated 3 out of 5 by from response I have not yet tried this product but would like to comment on the above review. This is not the same product as the human Plan B. Plan B is levonorgestrel, NOT Megestrol. Megestrol is used to treat other medical conditions in humans not related to pregnancy prevention. Do not purchase this product thinking that it is going to prevent pregnancy.
Date published: 2009-09-01
Rated 1 out of 5 by from worst product ever megestol is also known as the plan b emergency contraceptive in humans, it can kill you imaghine what it will do for your pet....
Date published: 2009-04-17
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Q&A

Does this medication come in a smaller dosage?

It will be difficult to split a 20mg into 5mg tabs
Asked by: Kris
Not in the U.S. The tablet 20mg Megestrol is scored for dosing half of a tablet. A pill cutter would help to obtain a quarter tablet or 5mg.
Answered by: Lilli Pharmacist
Date published: 2014-10-03

i have a working dog who was given Megestrol for a false pregnancy, she has lost weight and her hair used to be thick and long and now it is very thin

any suggestions why?
Asked by: sheba
If this happened right after using the megestrol, then you should speak to your veterinarian about the possible side effects, especially if there will be continued use of the medication.
Answered by: Kelly P
Date published: 2014-06-26

If you have a working female and she is about 2 weeks before starting her heat cycle is it ok to use this drug to prevent the heat cycle?

how long can you give the drug to prevent the heat cycle?
Asked by: Anonymous
This drug can be used to postpone a heat cycle. The exact dose and time that you give it can be determined by your veterinarian. The dose and duration of treatments depends on the stage of the cycle when therapy is begun.
Answered by: Kelly P
Date published: 2013-07-15

What if any are the possible side effects of this drug on future fertility/health of the dog? Especially on a highly valuable working female?

Asked by: WorkingDogOwner
Other than an allergic reaction, sudden severe headache; changes in vision; and swelling in a leg are side effects that can occur. Other less serious side effects may also occur. Talk to your veterinarian if your pet experiences nausea or vomiting, dizziness, mild shortness of breath, weakness, headache, sweating, and insomnia. I would counsel, based on your comments, that you have this discussion with your veterinarian and then make an informed decision as to how to treat your pet.
Answered by: Gary, Dir, of Pharmacy Services
Date published: 2012-12-30

How much should i give my 55 lbs lab per day?

Asked by: chcuk
When used to postpone estrus, the dose and duration of treatments depends on the stage of the cycle when therapy is begun. When used to treat false pregnancy, the usual dose is 1mg/lb of pet’s body weight given once a day for 8 days
Answered by: Gary, Dir, of Pharmacy Services
Date published: 2009-10-02

Can humans use this drug?

Asked by: Anonymous
Yes, megestrol is prescribed by physicians for use by humans for a number of different conditions.
Answered by: Gary, Dir, of Pharmacy Services
Date published: 2013-08-10

how long can this med be used?

Asked by: carolyn
The dose and how long a prescription medication is taken is a decision made by your vet.
Answered by: jenn
Date published: 2008-08-20
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