Really not my field, But the drugs ingredients would lead me to believe the puppies could possibly show birth defects. Albon is a sulfa (Sulfasalazine) drug it has a wide variety of side effects. I would consult your vet before administrating and kind of drug to your pregnant pet. He or she may simply ask you to drop the dosage 30 to 50%
Don't give *anything* to your dog unless it was recommended or prescribed by your vet.