Phenoxymethylpenicillin is another name for Penicillin V.
It is an antibiotic used to treat bacterial infections and has been around for a very long time.
It would be best to talk to your local pharmacist about the supply of this product in your area.
You will find more information on Penicillin V at Drugs.com
The link is
http://penicillin.v.drugs.com