Overview
- NHS GP Doctor Shireen advises starting vitamin C plus zinc at the first signs of a cold, citing combined effervescent tablets as an easy option.
- Regional UK outlets on October 9 amplified her TikTok message, followed by new coverage on October 10 that expanded the evidence context.
- The Sun cited a 2023 study suggesting vitamin C can shorten illness by about 10% and a Cochrane review indicating zinc within 24 hours may cut duration by one to two days, with greater effects in adults.
- Articles stress that overall efficacy remains unproven, noting mixed research findings and the importance of timing and formulation.
- NHS guidance says most colds improve in one to two weeks with rest, fluids and other self-care, and advises speaking to a clinician before starting supplements, which are widely available and low-cost.