How long does it take to see a difference when consuming collagen?

Science trials showed skin improvements after just 4 weeks of daily collagen supplementation.

It will take longer to feel noticeable results in ligaments and tendons, depending on many variables such as type and degree of injury, age, gender, genetics and level of activity just to name few. Some research reported results just after 6 weeks. But in many cases, it took 12 or more weeks to see significant changes in tendon strength and healing.

To see improvements in the bone density, you will have to persist with collagen supplementation for at least one year. When it comes to gut health, it depends on the current state of your gut health. Give it at least 12 weeks if you suffer from the so-called leaky gut.