Mersyndol (Paracetamol, Codeine Phosphate Hemihydrate, Doxylamine Succinate)
Complete patient guide for uses, dosage, side effects, and safety information
Quick Facts
What Is Mersyndol Used For?
Mersyndol is an analgesic medication designed for short-term relief of moderate pain and fever.
Primary Uses
Mersyndol is primarily used to alleviate moderate pain and reduce fever.
How It Works
It combines paracetamol, which relieves pain and lowers fever, with codeine, which is converted to morphine in the body to provide additional pain relief. Doxylamine acts as an antihistamine with calming effects.
Good to know: Mersyndol is effective for pain relief when other treatments are not suitable.
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How to Take Mersyndol
Follow your doctor's instructions on how to take Mersyndol for optimal results.
Dosage Instructions
For adults and children aged 12 years and older, take one or two tablets every 4 to 6 hours as needed. Do not exceed 8 tablets in a 24-hour period.
What If You Miss a Dose?
If you miss a dose, skip it and take your next dose at the scheduled time. Do not double up on doses.
Important: Never take more than the prescribed dose to avoid serious side effects.
Available Tablet Strengths
Side Effects
Like all medications, this medicine can cause side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects
These side effects occur relatively frequently and usually don’t require emergency care:
- Skin rash
- Constipation
- Nausea
- Vomiting
- Dizziness
- Drowsiness
- Sweating
- Blurred vision
Seek immediate medical attention if you experience:
- Difficulty breathing
- Swelling of the face, lips, or throat
- Hives
- Severe abdominal pain
- Irregular heartbeat
- Confusion
- Severe liver problems
Impulse Control Issues
Mersyndol may lead to dependence and addiction, particularly if used for extended periods.
Important Warnings
There are several critical warnings to consider before using Mersyndol.
Who Should Not Take Mersyndol
Do not use Mersyndol if you are allergic to any of its ingredients, have severe respiratory issues, liver failure, or are under 12 years old.
Medical Conditions to Discuss
Consult your doctor if you have liver or kidney problems, respiratory issues, sleep apnea, or a history of substance dependence.
Pregnancy and Breastfeeding
Avoid Mersyndol during pregnancy, especially in the third trimester, and do not use while breastfeeding.
Elderly Patients With Dementia: Elderly patients may have increased sensitivity to side effects and should use Mersyndol with caution.
Drug Interactions
Certain medications can interact with Mersyndol, affecting its efficacy or increasing side effects.
- Monoamine Oxidase Inhibitors (MAOIs)
- Other opioid analgesics
- Benzodiazepines
- Antidepressants
- Antihistamines
- Gabapentinoids
- Alcohol
Alcohol & Driving
Be cautious with alcohol consumption and operating machinery while taking Mersyndol.
Alcohol
Avoid alcohol while taking Mersyndol as it can increase drowsiness and risk of liver damage.
Driving and Operating Machinery
Do not drive or operate heavy machinery if you feel drowsy or dizzy after taking Mersyndol.
Storage
Store Mersyndol below 30°C in a cool, dry place away from moisture and sunlight. Keep out of reach of children.
Overdose Information
If you suspect an overdose, seek immediate medical help. Symptoms may include slow or difficult breathing, drowsiness, or nausea.
Frequently Asked Questions
Mersyndol typically starts to relieve pain within 30 minutes to an hour after taking it.
Yes, Mersyndol can be taken with or without food.
Yes, Mersyndol contains codeine, which can be habit-forming and lead to dependence.
Stopping Mersyndol suddenly may lead to withdrawal symptoms such as anxiety, body aches, and nausea.
No, alcohol should be avoided as it can increase the risk of serious side effects.
Weight gain is not a commonly reported side effect of Mersyndol.
Elderly patients should use Mersyndol with caution due to increased sensitivity to side effects.
If you miss a dose, skip it and take your next dose at the scheduled time without doubling up.
Important Disclaimer
This information is intended for general educational purposes only and should not be considered medical advice. Always consult your healthcare provider or pharmacist before starting, stopping, or changing any medication.
If you think you may have a medical emergency, call your doctor or emergency services immediately.