P updated safety warning use only for 3 days. Can cause addiction. P p fast relief from tension headache and migraine. Br br easy to swallow. Br br syndol is formulated to bring fast effective relief from pain, especially the pain associated with tension headaches and migraines. Syndol contains paracetamol, codeine and caffeine to relieve head pain, and doxylamine succinate to relax muscular tension. Br br syndol is a trade mark of hoechst marion roussel ltd. P