ASK A DOCTOR,Dr. Andrew Rynne,Family Physician,Dr. Ram Choudhary,Internal Medicine,Dr. Timothy G Moser,Family Physician,Answers on L arginine proanthocyanidine granules argiprime.For what disease is L- Arginine and Proanthocyanidine prescribed? Why this L- Arginine and Proanthocyanidine Granules prescribed to male / man ...Ask a Doctor Now ยป Has prescribed L-Arginine and proanthocyadin granules powder during pregnancy. What is it for? Sir,our doctor has prescribed L- Arginine and proanthocyadin granules powder ,two times a day ,during my wifes 33 week pregnancy