Speedwell (Veronica officinalis) has a long history of use in traditional European herbal medicine, where it has been employed for a variety of ailments, including sore throat, coughs, and respiratory complaints. Historical texts and folk medicine accounts from the 16th to 19th centuries describe the use of Speedwell infusions or teas as a soothing remedy for throat irritation and mild upper respiratory tract symptoms. The herb was often included in formulations intended to "cleanse the blood" and alleviate catarrhal conditions, which encompasses sore throat.

However, there is scant modern scientific research validating these uses. Few studies have investigated the pharmacological properties of Speedwell, and those that exist primarily focus on its antioxidant and anti-inflammatory activity in vitro or in animal models, rather than clinical outcomes in humans. No robust clinical trials have been conducted to specifically assess its effectiveness for sore throat. The evidence that does exist is largely anecdotal or based on traditional use, with little to no rigorous scientific validation supporting its efficacy for this condition.

In summary, the use of Speedwell for sore throat is justified by historical and traditional practices, but there is minimal scientific evidence to support its benefit for this specific indication.