Codeine is available as tablets and liquid medicine and is used primarily for pain relief. The correct dose depends on factors including the reason for treatment and the individual's medical circumstances. Anyone researching buy codeine pills should be aware that prescription codeine must be obtained through an appropriate healthcare service in the UK. Codeine can cause drowsiness and constipation and may lead to dependence with prolonged use. Alcohol can increase the risk of side effects, while combining codeine with certain other medicines may also require caution. Following professional advice and the medicine's instructions can help reduce avoidable risks during treatment.