reported an investigation from Germany that utilized a randomized, placebo-controlled, triple-blind trial using confocal laser scanning microscopy to determine the cosmetic effects and tolerance of a commercial drinkable collagen supplement (2.5 g with vitamins C and E plus minerals [zinc and biotin]) for 12 weeks in 60 female participants 4070 years of age [32]
To maximize results: Small daily habits can have a major impact on your overall results
Other supplements like selenium, zinc, L-carnitine, probiotics, and vitamin K show potential in improving endocrine-metabolic profiles, though more high-quality research is needed to confirm their efficacy and safety
These have been shown to subside after a few days as the body adjusts to the therapy
Shipping speed and origin matter too, especially in Canada where cross-border parcels can sit in customs limbo
So your doctor can prescribe a drug however they think is best for your care