The length of time it takes to feel the positive benefits of taking collagen peptides can vary depending on the individual, the specific collagen supplement being used, and the dose and frequency of use.
Some studies have suggested that improvements in skin hydration and elasticity can be seen after 4-8 weeks of daily collagen peptide supplementation. Other studies looking at the effects of collagen peptides on joint pain and inflammation have found improvements after 12-24 weeks of supplementation.
However, it's important to note that the evidence is mixed, and more research is needed to fully understand the potential benefits of collagen peptides and how long it may take to see results.
It's also worth keeping in mind that individual factors such as age, diet, and lifestyle habits can also influence how quickly one may experience benefits from collagen peptide supplementation. For example, someone who is younger and has a generally healthy diet and lifestyle may see results more quickly than someone who is older and has underlying health conditions or poor lifestyle habits.
If you're considering adding collagen peptides to your diet, it's always a good idea to consult with a healthcare professional or registered dietitian to ensure that it's safe and appropriate for your individual needs and health status.