If you are taking Co-codamol without a prescription, carefully read and follow any precautions on the label. For Co-codamol , the following should be considered:
Allergies - tell your doctor if you have ever had any unusual or allergic reaction to Co-codamol or aspirin. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes.
Pregnancy - although studies have not been done in pregnant women, Co-codamol has not been reported to cause birth defects or other problems.
Breast-feeding - although Co-codamol passes into the breast milk in small amounts, it has not been reported to cause problems in nursing babies.
Children - this medicine has been tested in children and has not been shown to cause different side effects or problems than it does in adults.
Older adults - Co-codamol has been tested and has not been shown to cause different side effects or problems in older people than it does in younger adults.
Other medicines - although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary.
Other medical problems - the presence of other medical problems may affect the use of Co-codamol . Make sure you tell your doctor if you have any other medical problems, especially:

• Alcohol abuse or
• Kidney disease (severe) or
• Hepatitis or other liver disease - The chance of serious side effects may be increased

Check with your doctor immediately if any of the following side effects occur:

• Rare
• Yellow eyes or skin 

• Symptoms of overdose
• Diarrhea;  increased sweating;  loss of appetite;  nausea or vomiting ;  stomach cramps or pain;  swelling, pain, or tenderness in the upper abdomen or stomach area 

Also, check with your doctor as soon as possible if any of the following side effects occur:

• Rare
• Bloody or black, tarry stools;  bloody or cloudy urine;  fever with or without chills (not present before treatment and not caused by the condition being treated);  pain in lower back and/or side (severe and/or sharp);  pinpoint red spots on skin;  skin rash, hives, or itching;  sores, ulcers, or white spots on lips or in mouth;  sore throat (not present before treatment and not caused by the condition being treated);  sudden decrease in amount of urine;  unusual bleeding or bruising;  unusual tiredness or weakness