If symptoms persist, try taking Syndol which contains paracetamol, codeine and doxylamine - a chemical that relaxes the blood vessels in your head. Tension occurs when the blood vessels are tight.
This parallels regulations that have been in place in the UK since 1998, requiring over-the-counter packages of paracetamol to contain no more than 16 tablets with a cumulative maximum of 8 g of ...