Common side effects of Codeine include Drowsiness, Constipation, Nausea. Serious side effects include Respiratory depression and Dependence. Codeine is classified as Opioid. Always consult a doctor if side effects persist.

Side Effects GuideAI-VerifiedOpioid

Codeine Side Effects

Complete guide to Codeine side effects — what's common, what's serious, which body systems are affected, and when to see a doctor.

Body impact map

Common
Serious
4
Common effects
4
Serious effects
4
Body systems

Common Side Effects

Usually mild · often resolve on their own

These side effects may occur in some patients taking Codeine. Most are mild and improve as your body adjusts. Tell your doctor if any persist or worsen.

Drowsiness
Head / Brain
Constipation
Stomach / GI
Nausea
Stomach / GI
Dizziness
Head / Brain

Serious Side Effects

Rare but urgent · seek immediate medical help

Stop taking Codeine and seek immediate medical help if any of the following occur. Call 112 for emergencies.

Emergency · 112
Respiratory depression
Mental / Nervous
Dependence
Mental / Nervous
Allergic reaction
Whole body
Severe constipation
Stomach / GI

Not a complete list. Report any unusual symptoms to your doctor immediately.

How to Minimize Side Effects

Simple steps that help

  • Take Codeine exactly as prescribed by your doctor — never change the dose yourself.
  • Follow dosage timing instructions carefully (with food / empty stomach / at bedtime as directed).
  • Do not stop Codeine suddenly without consulting your doctor — sudden discontinuation can be risky.
  • Report any new or unusual symptoms to your doctor promptly — early detection prevents complications.
  • Check drug interactions with GoDavaii AI before starting any new medicine, supplement, or even herbal remedy.
  • Avoid alcohol while on Codeine unless your doctor has confirmed it is safe.
AI-Verified · Cross-checked against 40,000+ interaction database

Not medical advice

Individual responses to Codeine vary — age, weight, existing conditions, and other medicines all matter. Always consult your doctor for personalized advice. For emergencies, call 112.

Frequently Asked Questions

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