Sometimes we get muscle pain that feels tight, stiff, or sharp, and it becomes difficult to move freely. It can happen after work, exercise, or even from sleeping the wrong way. When someone is given Norflex Co, we may wonder what it actually does or why it has two ingredients in one tablet. Don’t worry — it’s quite simple.
Norflex Co is a pain-relief tablet that combines two helpful ingredients working as a team. One part, called orphenadrine citrate, helps the muscles relax when they are stiff or in spasm. The other part, paracetamol, is a familiar pain and fever reliever that helps reduce discomfort.
So, instead of just easing pain, this tablet also helps the muscles calm down, making it easier to move without that tight, sore feeling. You simply take it by mouth like normal pain tablets, but just remember to use it the way your doctor or pharmacist explains.
It’s not something to stress about — it’s just a friendly helper for muscle pain, doing two jobs at once to help someone feel more comfortable.
What it is and what it is used for
Active ingredient(s) and class
- Orphenadrine citrate (35 mg): An anticholinergic medicine with skeletal muscle relaxant properties.
- Paracetamol (450 mg): An analgesic (pain reliever) and antipyretic (fever reducer).
- Pharmacological category: A.2.9 (Other analgesics).
Indications/uses
- Relief of pain due to spasm of voluntary muscle.
- Symptomatic treatment of mild to moderate pain and/or fever.
Note: Norflex Co is sugar-free.
How it works
- Orphenadrine citrate helps relax skeletal muscles by blocking certain nerve signals (anticholinergic action). When muscles are less tense, pain from spasm often eases.
- Paracetamol acts mainly in the central nervous system to reduce the perception of pain and lower fever.
Together, this combination targets both the painful spasm component (orphenadrine) and the pain/fever component (paracetamol).
Who should NOT use this medicine
Do not use Norflex Co if any of the following apply:
- Prostatic enlargement.
- Closed-angle glaucoma or a narrow angle between the iris and cornea (risk of raised intra-ocular pressure; risk is greater over 40 years of age).
- Paralytic ileus or pyloric stenosis (risk of obstruction).
- Severe liver function impairment.
- Known sensitivity (allergy or intolerance) to any ingredient in the tablet.
- Pregnancy: Safe use has not been established; it should not be used in pregnant women.
Use with caution or seek medical advice first if:
- You have tachycardia (fast heartbeat), urinary retention, or myasthenia gravis.
- You have fever (risk of worsening anticholinergic effects).
- You have conditions characterised by tachycardia such as thyrotoxicosis, cardiac insufficiency or failure, or you’ve had cardiac surgery.
- You are an elderly man (greater susceptibility to anticholinergic side effects and prostate-related issues).
- Ambient temperature is high, especially in children, due to the risk of hyperpyrexia (very high fever).
Warnings and precautions (Read before use)
- Duration of use: Do not use continuously for more than 10 days without consulting your doctor.
- Elderly: More prone to anticholinergic side effects at usual doses. A reduced dosage is advised—discuss with a healthcare professional.
- Long-term (prolonged) use: The safety of continuous long-term therapy with orphenadrine has not been established. If prolonged treatment is prescribed, periodic monitoring of blood, urine, and liver function is recommended.
- Liver or kidney issues: Use paracetamol with caution in hepatic or renal dysfunction.
- Driving and machinery: Orphenadrine may impair the ability to drive or use machines; be cautious.
- Alcohol and CNS depressants: Avoid alcohol and other central nervous system depressants while taking Norflex Co.
- Avoid double-dosing of actives: Do not take other medicines containing orphenadrine or paracetamol at the same time.
- Lack of relief: If you do not experience relief from the recommended dosage, consult a doctor.
- Potential for abuse: Orphenadrine has been abused for a supposed euphoriant effect—use only as directed.
Pregnancy, planning pregnancy, and breastfeeding
- Pregnancy: Norflex Co is not recommended during pregnancy; safe use has not been established.
- Breastfeeding: Do not take during lactation; orphenadrine and paracetamol are excreted into breast milk.
- Fertility: No data available.
Interactions
Medicines that may increase anticholinergic effects (use with caution):
- Amantadine, certain antihistamines, butyrophenones, phenothiazines, and tricyclic antidepressants.
Sedation and impairment risk (avoid):
- Alcohol and other CNS depressants.
Anticoagulants:
- If paracetamol use is prolonged, the dose of anticoagulants may need reduction (medical supervision required).
Medicines that affect paracetamol absorption:
- Increase absorption: Metoclopramide (increases gastric emptying).
- Decrease absorption: Propantheline, antidepressants with anticholinergic properties, and narcotic analgesics (decrease gastric emptying).
Other interactions involving paracetamol:
- May increase chloramphenicol concentrations.
- Enzyme inducers such as alcohol and anticonvulsants may increase the risk of paracetamol toxicity.
Practical point: Always inform your doctor or pharmacist about all medicines you take, including over-the-counter products and complementary therapies, to check for overlaps with paracetamol or anticholinergic effects.
How to take Norflex Co (Step-by-step)
Adult dosing
- Usual dose: Two tablets, three or four times a day.
- Route: Oral (by mouth).
Older adults
- The elderly may be more susceptible to anticholinergic side effects. A reduced dosage is advised—speak to your doctor or pharmacist for an adjusted regimen.
Children
- Paediatric dosing: Not specified in the source.
With or without food
- Not specified in the source.
Missed dose
- Not specified in the source. Ask your pharmacist or doctor if you are unsure how to handle a missed dose.
Overdose
- Overdose is a medical emergency—seek urgent care.
- Orphenadrine overdose symptoms: Fast heartbeat (tachycardia), excitement, confusion, delirium (which may progress to coma), convulsions, enlarged pupils, and urinary retention.
- Paracetamol overdose symptoms: Vomiting, abdominal pain, low blood pressure, sweating, drowsiness, respiratory depression, cyanosis, and coma. In adults, ingestion of 10–15 g paracetamol may cause hepatotoxicity; ≥25 g can be potentially fatal. Major signs of liver failure (e.g., jaundice, low blood sugar, metabolic acidosis) may take at least 3 days to appear.
- Early treatment is essential even if symptoms are absent.
- Reduce absorption: Prompt activated charcoal 50 g in 150 mL water plus 150 mL sorbitol 50% by mouth; gastric lavage if charcoal cannot be taken. Give intravenous fluids (e.g., normal saline) as recommended.
- Antidote for paracetamol:Intravenous acetylcysteine 20%, start immediately if ≤8 hours since ingestion.
- Initial dose: 150 mg/kg over 15 minutes
- Then 50 mg/kg in glucose 5% (500 mL) over 4 hours
- Then 100 mg/kg in glucose 5% (1 L) over 16 hours
- If >8 hours have elapsed, the antidote may be less effective, but still consider treatment.
- Convulsions/delirium: May respond to relatively large doses of diazepam (preferably by mouth).
- Hydration: Maintain adequate hydration.
Dosing table Norflex Co
| Population | Dose per administration | Frequency | Route |
|---|---|---|---|
| Adults | 2 tablets | 3–4 times daily | Oral |
Note: The elderly should discuss a reduced dosage with a healthcare professional.
Possible side effects Norflex Co
Reported side effects
Orphenadrine (anticholinergic-related)
- Nervous system: Insomnia; mental confusion (especially in the elderly). People with Down’s syndrome may be more susceptible; those with albinism may be resistant.
- Eyes: Dilated pupils, loss of accommodation, photophobia, increased intra-ocular pressure.
- Heart: Transient bradycardia followed by tachycardia, palpitations, dysrhythmias.
- Gastrointestinal/urinary: Dry mouth with difficulty swallowing; desire to urinate with inability to do so; reduced gut tone and motility leading to constipation; nausea, occasional vomiting, giddiness, weakness, drowsiness, staggering; retrosternal pain due to increased gastric reflux.
- Respiratory: Reduced bronchial secretion, which may lead to mucous plugs.
- Skin: Flushing and dryness of skin.
Paracetamol
- Blood: Neutropenia, pancytopenia, leucopenia.
- Gastrointestinal: Dyspepsia, nausea, allergic reactions.
- Skin: Skin rashes and other allergic reactions; rash usually erythematous or urticarial, but can be more serious and may be accompanied by fever and mucosal lesions.
Serious—seek urgent help
Although specific “serious” labels are not used in the source, urgent medical attention is advisable if you notice:
- Severe allergic reactions (e.g., rash with fever and mucosal lesions).
- Visual symptoms suggestive of raised eye pressure (e.g., severe eye pain, vision changes).
- Heart rhythm problems (palpitations, fainting, irregular heartbeat).
- Severe confusion, delirium, convulsions, or marked drowsiness/staggering.
- Inability to pass urine with lower abdominal discomfort.
Storage and disposal
- Storage temperature: Store at or below 30 °C.
- Shelf life: Blister packs: 36 months; HDPE plastic bottles: 48 months.
- Disposal: No special requirements are specified in the source. Follow local guidance or ask a pharmacist.
What the medicine contains
Active ingredients (per tablet)
- Orphenadrine citrate 35 mg
- Paracetamol 450 mg
Formulation note: Sugar-free.
Excipients
- Colloidal silicon dioxide
- Magnesium stearate
- Microcrystalline cellulose
- Pregelatinised maize starch
Pack information and appearance
- Pharmaceutical form: Tablets.
- Appearance: White scored tablets with “N/C” on one side and no markings on the other.
- Packs:
- Blister packs of 24 and 48 tablets.
- White HDPE plastic bottles of 120 tablets.
FAQs
Is Norflex Co available without a prescription?
It is an S2 medicine in South Africa, which means it is supplied under a pharmacist’s supervision.
What conditions does it treat?
Pain associated with muscle spasm, and the symptomatic relief of mild to moderate pain and/or fever.
How do I take it?
Adults take two tablets, three or four times a day, by mouth.
Can I take it if I am pregnant or breastfeeding?
It is not recommended during pregnancy and should not be taken while breastfeeding (both actives are excreted into breast milk).
Can I drive after taking Norflex Co?
Caution is advised. Orphenadrine may impair the ability to drive or operate machinery.
Can I drink alcohol with it?
No. Avoid alcohol and other CNS depressants while using Norflex Co.
Can I use it together with other pain medicines?
Do not combine with other products that contain orphenadrine or paracetamol. If you use anticoagulants and plan prolonged paracetamol use, medical supervision is needed as your anticoagulant dose might require adjustment.
What if I have glaucoma or prostate problems?
Do not use if you have closed-angle glaucoma or prostatic enlargement. Speak to your healthcare provider.
Is it safe for older adults?
The elderly may be more sensitive to anticholinergic effects. A reduced dosage is advised—consult a healthcare professional.
Is it sugar-free?
Yes, Norflex Co is sugar-free.
How long can I take it for?
Do not use continuously for more than 10 days without consulting a doctor.
What should I do in case of overdose?
Seek urgent medical attention. Treatment may include activated charcoal, supportive care, and intravenous acetylcysteine for paracetamol overdose (see detailed regimen above).
Composition table
| Component | Amount per tablet | Notes |
|---|---|---|
| Orphenadrine citrate | 35 mg | Anticholinergic skeletal muscle relaxant |
| Paracetamol | 450 mg | Analgesic and antipyretic |
| Sugar | 0 mg | Sugar-free formulation |
| Excipients | — | Colloidal silicon dioxide; magnesium stearate; microcrystalline cellulose; pregelatinised maize starch. |
Manish Sharma is a Master’s graduate in Pharmaceutical Chemistry and a registered pharmacist with a passion for simplifying medical knowledge for everyday readers. Through his platform, he provides clear, easy-to-understand information about medicines — including their correct usage, benefits, and safety tips — while also addressing common myths surrounding them.
Alongside modern medicine, Manish also explores natural and herbal remedies, encouraging a balanced and healthy lifestyle. His mission is to empower people with reliable health information, helping them make informed decisions and live healthier, happier lives.
