Gaviscon pm with sleep aid chewable foamtabs begin working immediately. Provides night-time relief of heartburn, acid reflux and gerd (gastro-esophageal reflux disease) symptoms. Doctor recommended gaviscon forms a protective foam barrier that blocks acid reflux for hours. Helps increase total sleep time in sufferers of sleep restriction or altered sleep schedule. Each gaviscon pm tablet contains 1.5mg of melatonin to help you fall asleep faster and stay asleep longer. Medicinal ingredients: 313mg alginic acid (derived from brown seaweed), 63mg magnesium carbonate, 1.5 mg melatonin / tablet.non-medical ingredients (alpha): calcium stearate, flavors, sodium bicarbonate, compressible sugar.caution: relief of heartburn/acid reflux symptoms should occur within 5-10 minutes of taking the product. Consumption with alcohol, other medications or natural health products with sedative properties is not recommended. Do not take for more than 2 weeks, or if heartburn symptoms recur, unless directed by a doctor. If you are pregnant or nursing. Ask a doctor before use if you suffer from kidney disease, asthma, cardiovascular disease, depression, diabetes or hypoglycaemia, hormonal disorder, immune system disease, liver disease, migraines, seizure disorders. Ask a doctor before use if you are taking, anticoagulant, anticonvulsant, blood pressure medications immunosuppressive medications, sedative, hypnotic or psychotropic medications, steroids.when using this product do not take other medication within 2 hours because effectiveness may be altered. Except under your doctor’s advice if you are on a low salt diet do not exceed 3 tablets per day. Stop use and ask a doctor if: heartburn symptoms persist or worsen are accompanied by painful swallowing, weight loss, vomiting of blood or recurrent vomiting. Sleeplessness persists for more than 4 weeks. Mild gastrointestinal symptoms (nausea, vomiting, or cramping) occur. Allergic reaction occurs. Jet lag: for occasional short-term use. Keep out of reach of children. Avoid excessive humidity. Do not use if safety seal under cap is broken or missing.