Psyllium, collagen, and creatine rise above the rest: a dietitian weighs supplements

Dietitian Josie Porter reviews ten popular supplements, concluding that multivitamins rarely help, magnesium mainly benefits those with low intake, and electrolyte powders are largely unnecessary; however, psyllium husk can aid constipation/diarrhea, collagen may modestly improve skin elasticity (mostly in women in their 40s–50s), and creatine can help if dietary intake is insufficient. She also notes UK recommendations of about 10 micrograms of vitamin D daily from October to March due to low winter sunlight.