There are various supplements for which the body makes a tolerance & their effectiveness on the body reduces. Hence, it is important to stop taking them after a certain amount of time, a practice known as 'cycling your intake'.
On the other hand, some supplements are better when taken uninterrupted since their ingredients do not disrupt the body's natural processes. In these cases, not consuming them continuously will often limit their positive effect. FLEXIBLE collagen does not require cycling and most people will continuously stick with it as a daily help to their current diet for better results.