Phillips'® Genuine Saline Laxative Milk Of Magnesia Original. Bayer. New Look! Same Great Product. Stimulant Free. Cramp Free. Sugar Free. #1 Milk Of Magnesia Brand. 12 Fl Oz (355 ml). Other information: Each (15 ml) contains: magnesium 500 mg. Use: Relieves occasional constipation (irregularity). This product usually produces bowel movement in 1/2 to 6 months. Bayer, the Bayer Cross and Phillips are registered trademarks of Bayer. Questions or comments 1-800-986-0369 (Mon - Fri 9AM - 5PM EST).