You should not take Kalms, a popular herbal remedy containing valerian root and hops, if you are under 18 years of age, pregnant, or breastfeeding. Because it is a sedative designed to relieve stress and aid sleep, you should strictly avoid it if you are already taking other medications for anxiety, depression, or sleep disorders, as the combined effects can be dangerously potent. Individuals with an allergy to any of the specific ingredients or those with an intolerance to certain sugars (as the tablets contain sucrose) should also refrain from use. In 2026, health professionals also advise against taking Kalms if you need to drive or operate heavy machinery, as it frequently causes drowsiness or dizziness. Furthermore, alcohol should be strictly avoided while taking this supplement, as it significantly increases the sedative impact. If your symptoms do not improve after four weeks of consistent use, you should stop taking the tablets and consult a medical professional to rule out more serious underlying health conditions.