Welcome. Already a member? Click here to sign in.
New customer? Click here  to begin.
Free Shipping on orders over $39.00
Vet Approved PET Medications - for LESS...   @VetApprovedRx.com
Call Toll Free: 877.847.7389
Show me products used for:   Dogs   Cats    > All <
Search  Go

Shop by condition
More options
Pet Filter
Show me products used for:

All Products US EPA And FDA Approved

We Ship USPS and FedEx.

Find Us On Facebook
Follow Us On Twitter



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.
Add this item to your cart:

Item# Size/Desc Qty Price
20mg 100 count bottle
This item requires a RX
40mg 10 count bottle
This item requires a RX

**Note: This product requires a veterinarian's prescription to purchase.At checkout you will need to provide your veterinarian's FAX or email address. We will then send him or her a prescription verification that he or she will need to sign and return before we can ship you this product.


It is important that you follow your Veterinarian's prescription instructions for your pet.
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.


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.


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. Store megestrol at room temperature, away from moisture and heat.