The alcohol in this medicine may alter the effects of other medicines. Talk to your doctor or pharmacist if you are taking other medicines If you take too much: If you accidentally take too much, consult a doctor as soon as possible. Take the patient information leaflet with you. Overdose of this product may result in alcohol intoxication and should be treated accordingly Adverse effects on the heart may result from the cardiac glycosides in squill. Toxic doses may cause or aggravate heart failure. Supraventricular or ventricular arrhythmias and defects of conduction are common and may be an early indication of excessive dosage. Here's everything you need to know about Covonia chesty cough mixture, including the dosage, side effects and who should and shouldn't take the medicine. The other ingredients are: ethanol, methyl parahydrobenzoate (E218), propyl parahydrobenzoate, capsicum tincture (containing capsicum oleoresin, ethanol and purified water), caramel (E150), glycerol (E422), viscarin SD398 (containing dextrose and carrageenan (E407)), menthol, sodium saccharin (E954) and purified water

In particular, if you're taking any of the following medicines you should get advice from your pharmacist before taking Covonia herbal mucus cough syrup, because you may be more likely to get side effects from this cough medicine if you are taking one or more of these:In addition CNS effects such as vertigo, ataxia and drowsiness have been reported after ingestion of large quantities of menthol; reported adverse effects following excessive ingestion of liquorice include hypertension, congestive heart failure, cardiac arrest, headache, muscle weakness, myopathy, myoglobinuria, paralysis, hyperprolactinaemia and amenorrhoea. Allergic reactions such as flushing, hives or an itchy rash. Stop using the cough syrup and get medical advice if you think you've had an allergic reaction to it. Taking any other product for colds, flu or congestion as Covonia All-in-One contains a decongestant This product contains methyl parahydroybenzoate (E218) and propy parahydroybenzoate which may cause allergic reactions (possibly delayed) Expectorants such as squill and liquorice are thought to work by increasing the volume of fluid produced in the airways. This helps to thin and loosen the mucus in the airways, making it easier to cough up.

If your cough gets worse or lasts for longer than a week you should get medical advice from your doctor or pharmacist. Liquorice can cause sodium and water retention in the body and a reduced level of potassium in the blood, though this is unlikely to occur with normal doses of this cough medicine.If symptoms get worse, if you get a fever, shortness of breath or blood in your saliva, or if symptoms persist for more than 7 days, consult a doctor or qualified healthcare professional. This medicine contains less than 1 mmol sodium (23mg) per dose, which is to say essentially 'sodium-free'