Collagen accounts for about 30% of your body's total protein and is the primary building block of your body's skin, muscles, bones, tendons and ligaments, and other connective tissues
According to Harvard Health, there isn't enough evidence that collagen drinks or pills will improve skin, hair, or nails. However, some randomized controlled trials have found that collagen supplements can improve skin elasticity and joint mobility.
According to UCLA Health, taking 2.5 to 15 grams of hydrolyzed collagen daily is safe. Smaller doses can benefit your joints and skin, while larger doses may help with body composition and muscle mass.
Some small studies have shown improved skin elasticity and appearance after taking collagen hydrolysate supplements for at least six weeks. However, it's not known if these effects are long-lasting, and some studies didn't include a control group.
More research is needed to fully understand the potential benefits and risks of drinking collagen. It's also important to speak with your doctor before taking any supplements.