Senokot Max Strength are double the strength of Senokot tablets. They contain natural senna and provide predictable relief in 8 - 12 hours.
Just because you get constipation doesn't mean you are unhealthy or even that you have an unhealthy lifestyle. You can follow a high-fibre diet, exercise every day, drink lots of water yet still get constipation from time to time. Even from childhood some people just seem to be more susceptible than others. There's really no need to feel you've brought constipation on yourself.