Darvin Tablet 37.5mg / 325mg

About Darvin Tablet 37.5mg / 325mg

Darvin Tablet Uses

• Moderate to severe acute pain
• Post-operative pain relief
• Musculoskeletal and back pain
• Dental pain
• Pain from fractures or injuries
• Chronic pain not controlled by paracetamol alone

Darvin Tablet Benefits

• Combines two pain relief mechanisms for stronger effect
• Faster onset of relief than paracetamol alone
• Lower opioid dose needed compared to tramadol alone
• Reduces fever alongside pain
• Convenient two in one tablet reduces pill burden

What Experts Say

Tramadol Hydrochloride 37.5mg acts on opioid receptors and also blocks serotonin and norepinephrine reuptake, giving it a dual pain relieving action. Paracetamol 325mg works mainly in the central nervous system to lower pain signals and reduce fever. Combining the two allows a lower tramadol dose while still achieving strong analgesia.

Pharmacologists note this fixed dose combination produces pain relief faster than either drug alone, since paracetamol has a quicker onset while tramadol's effect builds over time. The combination is generally reserved for pain that does not respond to paracetamol or NSAIDs by themselves, rather than first line, mild discomfort.

Because tramadol carries dependence and seizure risk, clinicians recommend the lowest effective dose for the shortest duration needed. Liver function should be monitored with prolonged use, since paracetamol overdose is a leading cause of drug induced liver injury worldwide.

Drug Class

• Opioid Analgesic
• Non-Opioid Analgesic (Paracetamol)
• Centrally Acting Combination Analgesic

Darvin Tablet 37.5mg / 325mg formula

• Tramadol Hydrochloride 37.5mg + Paracetamol 325mg

Available forms

• Tablet

How to use Darvin Tablet 37.5mg / 325mg?

• Take one tablet every 6 to 8 hours as directed by the doctor.
• Do not exceed 4 tablets in 24 hours unless advised otherwise.
• Swallow the tablet whole with a glass of water.
• May be taken with or without food.
• Do not stop long term use abruptly without medical advice.

Drug Interactions

• MAO Inhibitors: Combining with MAOIs can trigger serotonin syndrome and is contraindicated within 14 days of MAOI use.
• SSRIs and SNRIs: Concurrent use raises the risk of serotonin syndrome, marked by agitation, high fever and rapid heartbeat.
• CNS Depressants: Alcohol, benzodiazepines, sedatives and other opioids increase the risk of severe drowsiness and slowed breathing.
• Carbamazepine: Reduces tramadol's pain relieving effect and can raise seizure risk when stopped or started.
• Warfarin: Tramadol may enhance the blood thinning effect, so INR should be monitored closely.
• Other Paracetamol Products: Taking additional paracetamol containing medicines raises the risk of liver toxicity.

Risks and warnings

• Seizure Risk: Tramadol can lower the seizure threshold, especially in patients with epilepsy or on other seizure risk medicines.
• Dependence: Long term use can lead to tolerance and opioid dependence, so treatment duration should stay as short as possible.
• Liver Damage: Exceeding the recommended paracetamol dose or combining with other paracetamol products can cause serious liver injury.
• Respiratory Depression: Higher doses or combination with alcohol and sedatives can slow or stop breathing, particularly in elderly or debilitated patients.
• Pregnancy and Breastfeeding: Use only if the doctor confirms the benefit outweighs the risk, since tramadol crosses the placenta and passes into breast milk.
• Not for Children: Avoid use in children under 12 years due to reports of serious breathing problems.

Darvin Tablet Side Effects

• Nausea and vomiting
• Dizziness or drowsiness
• Constipation
• Dry mouth
• Headache
• Sweating
• Loss of appetite
• Confusion in elderly patients
• Seizures with high doses or prolonged use
• Breathing difficulty with overdose or combination with other sedatives
• Allergic skin reactions such as rash or itching

Storage Conditions

• Store below 30°C in a cool, dry place away from direct sunlight.
• Keep the strip in its original packaging until use.
• Keep out of reach of children, given its opioid content.
• Do not use after the expiry date printed on the pack.