TENSOPYN is a prescription-only pain-relief tablet used for the short-term treatment of mild to moderate pain linked to tension. It combines four different active ingredients, each playing a specific role in easing pain, calming muscle and nerve tension, and helping the body relax. Because it contains codeine, an opioid medicine, it must be used carefully and only for limited periods unless a doctor advises otherwise.
What it is and what it is used for
What it is
TENSOPYN is a combination analgesic (pain-relief) medicine in tablet form. Each tablet contains four active ingredients that work together rather than on their own. This combination is designed to relieve pain that is linked to tension and stress, where muscle tightness, discomfort, and difficulty relaxing often occur together.
TENSOPYN is not intended for long-term or chronic pain unless a doctor specifically prescribes it for that purpose.
What it is used for
TENSOPYN is used to relieve mild to moderate pain associated with tension, including:
- Tension-type headaches
- Muscle tension and stiffness
- General body aches
- Discomfort related to stress
It should not be used for chronic pain conditions unless a healthcare professional advises otherwise.
What TENSOPYN contains
Each tablet of TENSOPYN contains the following active ingredients:
| Active ingredient | Amount per tablet | What it does |
|---|---|---|
| Paracetamol | 450 mg | Relieves pain and reduces fever |
| Codeine phosphate | 10 mg | Opioid pain reliever |
| Caffeine anhydrous | 30 mg | Improves alertness and boosts pain relief |
| Doxylamine succinate | 5 mg | Antihistamine with sedative (calming) effects |
Note: TENSOPYN tablets are sugar-free.
How it works
TENSOPYN works by targeting pain and tension in more than one way:
- Paracetamol helps reduce pain signals and lower fever.
- Codeine acts on pain centres in the brain to ease discomfort.
- Caffeine enhances the pain-relieving effect of paracetamol and helps counteract fatigue.
- Doxylamine has a calming, sedative effect that helps relieve tension and promote relaxation.
By combining these actions, TENSOPYN helps relieve pain while also reducing the physical and mental tension that often makes pain feel worse.
Who should NOT use this medicine
Do not take TENSOPYN if any of the following apply to you:
- You are allergic to paracetamol, codeine, caffeine, doxylamine, or any other ingredient in the tablet
- You have severe liver or kidney disease
- You have breathing problems or respiratory depression
- You have had recent bile duct surgery
- You have acute alcoholism
- You have a head injury or raised pressure in the skull
- You are having an asthma attack
- You have heart failure due to lung disease
- You are taking monoamine oxidase inhibitors (MAOIs) or stopped them within the last 14 days
- You are known to be an ultra-rapid CYP2D6 metaboliser (a genetic condition that causes high morphine levels from codeine)
- You are pregnant or breastfeeding (safety concerns apply)
If you are unsure whether any of these apply to you, speak to your doctor or pharmacist before taking TENSOPYN.
Warnings and precautions
Important safety warnings
- Do not use for longer than 5 consecutive days without medical advice.
- Do not combine with other medicines containing paracetamol or codeine.
- This medicine may cause drowsiness and reduced concentration.
- Do not drive, operate machinery, or perform risky tasks while affected.
- Avoid alcohol completely, as it increases the risk of severe drowsiness and breathing problems.
- Taking too much paracetamol can cause serious liver damage, even if you feel well at first.
Use with caution if you have:
Speak to your doctor before using TENSOPYN if you have:
- Liver or kidney problems
- High blood pressure
- Thyroid disease
- Adrenal gland disorders
- Enlarged prostate
- Glaucoma
- Asthma or other breathing difficulties
- Bowel or urinary problems
- Recent abdominal surgery
- Heart rhythm problems
- Seizures (fits)
- A history of drug or alcohol dependence
Risk of dependence and addiction
Because TENSOPYN contains codeine, prolonged or excessive use can lead to:
- Dependence
- Addiction
- Withdrawal symptoms when stopped
Elderly people and those with a history of substance misuse should use this medicine with extra caution.
Pregnancy, planning pregnancy, and breastfeeding
Pregnancy
- Paracetamol is considered safe when used occasionally during pregnancy.
- Codeine crosses the placenta, and regular use may cause dependence in the unborn baby.
- Using TENSOPYN during labour may lead to breathing problems in the newborn.
Use during pregnancy should be avoided unless absolutely necessary and prescribed by a doctor.
Breastfeeding
- Paracetamol passes into breast milk in very small amounts.
- Codeine also passes into breast milk and may cause opioid toxicity in breastfed infants, especially if the mother is an ultra-rapid metaboliser.
TENSOPYN should not be used while breastfeeding.
Interactions
TENSOPYN can interact with other medicines and substances, which may increase side effects or reduce effectiveness.
Medicines and substances that may interact
- Other paracetamol-containing medicines – risk of overdose
- Alcohol, sedatives, barbiturates, opioids – increased drowsiness, breathing problems, coma, or death
- Antihistamines or antidepressants – increased dry mouth, constipation, and blurred vision
- Warfarin and other blood thinners – increased bleeding risk with long-term use
- Diuretics and blood pressure medicines – increased risk of low blood pressure
- MAOIs – severe central nervous system reactions
- Metoclopramide or domperidone – may increase paracetamol absorption
- Cholestyramine – may reduce paracetamol absorption
- Anti-seizure medicines (such as phenytoin) – increased risk of liver damage
- Naltrexone or naloxone – block the pain-relieving effect of codeine
- Quinidine – may reduce the pain-relief effect of codeine
Always tell your doctor or pharmacist about all medicines, supplements, and herbal products you are using.
How to take (Step-by-step)
Who can take TENSOPYN
- Adults and children over 12 years
- Not recommended for children under 12 years
Step-by-step instructions
- Swallow the tablet(s) whole with a glass of water.
- Do not chew or crush the tablets.
- Take the medicine only as prescribed or directed.
- Space doses evenly throughout the day.
Recommended dosage
| Age group | Dose | Frequency | Maximum |
|---|---|---|---|
| Adults and children over 12 years | 1–2 tablets | Every 4 hours | 8 tablets in 24 hours |
Special populations
- Elderly: Lower doses may be needed due to slower drug elimination.
- Liver or kidney disease: Use only under medical supervision with reduced dosage.
Missed dose
- Take it as soon as you remember, unless it is almost time for the next dose.
- Do not take a double dose to make up for a missed one.
Overdose
Taking more than the recommended dose can be life-threatening, even if you feel well.
Seek emergency medical help immediately if overdose is suspected.
Possible side effects
Common side effects
- Drowsiness
- Reduced concentration
- Dry mouth
Less common side effects
- Constipation
- Nausea or vomiting
- Dizziness
Serious side effects – seek urgent help
- Trouble breathing or very slow breathing
- Severe drowsiness or unconsciousness
- Signs of liver damage (persistent nausea, abdominal pain, yellowing of skin or eyes)
- Severe allergic reactions (swelling of face, lips, or throat)
Symptoms of overdose (Important)
Paracetamol overdose
- Nausea and vomiting
- Upper right-sided abdominal pain
- Liver damage (may appear days later)
Codeine overdose
- Extreme drowsiness or coma
- Shallow or slow breathing
- Very small pupils
- Low blood pressure
Caffeine overdose
- Restlessness or agitation
- Muscle tremors
- Ringing in the ears
- Racing or irregular heartbeat
Doxylamine overdose
- Severe sedation
- Agitation, hallucinations, seizures
- High fever
- Coma or cardiorespiratory collapse
Warning: Overdose can be fatal. Get emergency help immediately.
Storage and disposal
- Store below 25°C in a cool, dry place
- Keep out of sight and reach of children
- Do not use after the expiry date on the packaging
Pack information and appearance
TENSOPYN tablets are:
- Yellow
- Round and flat
- Slightly speckled
- Smooth with angled edges
- Marked with a small triangle on one side
Practical FAQs
Can I drink alcohol while taking TENSOPYN?
No. Alcohol increases drowsiness and the risk of serious breathing problems.
Is TENSOPYN habit-forming?
Yes. Because it contains codeine, there is a risk of dependence with prolonged use.
Can I take it every day?
No. Do not use for more than 5 days in a row without medical advice.
Can I take it with other painkillers?
Not with medicines that contain paracetamol or codeine.
Is it safe for children?
Not recommended for children under 12 years.
What should I do if pain does not improve?
Speak to your doctor rather than continuing the medicine.
Zuri is a passionate medical content writer who loves making health information simple and approachable for everyone. She focuses on breaking down complex medical topics into clear, everyday language so readers can truly understand their health and feel confident about the choices they make.
Zuri carefully researches every article using trusted medical sources, clinical guidelines, and verified pharmaceutical information. Her writing is always guided by one goal — to provide accurate, up-to-date, and honest health content that puts patient safety, clarity, and transparency first.