No, you cannot buy the Albon oral suspension over the counter. It is a prescription medication. Unless vets authorize it, you cannot purchase this drug. Prescriptions are required for drugs that treat severe conditions or have multiple side effects on dogs and cats like diarrhea or vomiting. Treating them without a proper prescription or dosage instructions from the vet can lead to serious consequences. Thus, such manufacturers make it mandatory for you to get a prescription before you can buy the drug.