Along with its needing effects, a drug may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Get emergency help immediately if any of the following symptoms of overdose occur :
Cold, clammy skin; confusion; convulsions - seizures; dizziness - severe; drowsiness - severe; low blood pressure; nervousness or restlessness - severe; pinpoint pupils of eyes; slow heartbeat; slow or troubled breathing; weakness - severe
Always check with your family doctor as soon as possible if any of the following side effects was happen
Less common or rare
Dark urine - for propoxyphene only; fast, slow, or pounding heartbeat; feelings of unreality; hallucinations - seeing, hearing, or feeling things that are not there; hives, itching, or skin rash; increased sweating - more common with hydrocodone, meperidine and methadone; irregular breathing; mental depression or other mood or mental changes; pale stools - for propoxyphene only; redness or flushing of face - more common with hydrocodone, meperidine and methadone; ringing or buzzing in the ears; shortness of breath, wheezing, or troubled breathing; swelling of face; trembling or uncontrolled muscle movements; unusual excitement or restlessness - especially in child; yellow eyes or skin - for propoxyphene only
More common side effects may occur that usually don't needed medical attention. These side effects may go away during treat as your body adjusts to the drug. However, check with your family doctor if any of the following side effects continue or are bothersome:
More common
Dizziness, light-headedness, or feeling faint; drowsiness; nausea or vomiting
Less common or rare
Blurred or double vision or other changes in vision; constipation - more common with long-term use and with codeine; decrease in amount of urine; difficult or painful urination; dry mouth; false sense of well-being; frequent urge to urinate; general feeling of discomfort or illness; headache; loss of appetite; nervousness or restlessness; nightmares or unusual dreams; redness, swelling, pain, or burning at place of injection; stomach cramps or pain; trouble in sleeping; unusual tiredness or weakness
After you stop using this drug, your body may need time to adjust. The length of time this takes depends on the amount of drug you were using and how long you using it. During this period of time check with your family doctor if you notice any of the following side effects:
Body aches; diarrhea; fast heartbeat; fever, runny nose, or sneezing; gooseflesh; increased sweating; increased yawning; loss of appetite; nausea or vomiting; nervousness, restlessness, or irritability; shivering or trembling; stomach cramps; trouble in sleeping; unusually large pupils of eyes; weakness
More common side effects not listed above may also occur in some diseaseds. If you notice any other effects, check with your family doctor.