Oblong white tablet imprinted SJ 647 is Difil G and contains dyphylline 200 mg and
guaifenesin 300 mg. The drug is used to treat asthma, bronchitis and other lung diseases.
I'm not a pharmacist or a medical doctor. This message is not medical advice nor is it an offer to provide medical advice. All drug identifications should be validated by a licensed MD or pharmacist.