What is Reactin SR 100 mg?
Reactin SR 100 mg is a sustained-release (SR) formulation of Diclofenac Sodium, a nonsteroidal anti-inflammatory drug (NSAID). It is primarily used to relieve pain and inflammation associated with various conditions such as arthritis, muscle pain, and injury-related discomfort.
Uses of Reactin SR 100 mg
Reactin SR 100 mg is used in the treatment of:
Osteoarthritis
Rheumatoid arthritis
Ankylosing spondylitis
Musculoskeletal pain
Post-traumatic inflammation
Menstrual pain (dysmenorrhea)
Gout attacks
Benefits of Reactin SR 100 mg
Long-lasting relief due to sustained-release formulation
Reduces inflammation and swelling
Provides effective pain management
Improves mobility and joint function
How Does Reactin SR 100 mg Work?
Diclofenac works by inhibiting cyclooxygenase (COX-1 and COX-2) enzymes, which are responsible for the formation of prostaglandins—chemical messengers that cause pain, inflammation, and fever. The SR (sustained release) mechanism ensures a gradual release of the drug over time, maintaining consistent blood levels for extended pain relief.
How to Take Reactin SR 100 mg?
Take once daily, preferably with food to minimize stomach upset.
Swallow the tablet whole with water—do not crush or chew.
Follow your healthcare provider’s instructions strictly.
Dosage of Reactin SR 100 mg
Usual adult dose: One tablet (100 mg) per day.
Dosage may be adjust based on the condition and response to treatment.
Do not exceed the recommend dose without medical advice.
Missed Dose and Overdose
Missed Dose:
Take it as soon as you remember.
If it’s near the time for the next dose, skip the missed dose—do not double dose.
Overdose:
Symptoms may include nausea, vomiting, stomach pain, drowsiness, dizziness, or even gastrointestinal bleeding.
Seek immediate medical attention if an overdose is suspected.
Available Strengths of Reactin (Diclofenac SR)
Reactin SR 75 mg
Reactin SR 100 mg
Side Effects of Reactin SR 100 mg
Common side effects:
Stomach pain
Indigestion
Headache
Dizziness
Serious side effects (rare):
Gastrointestinal bleeding
Liver or kidney dysfunction
Allergic reactions (rash, swelling, breathing difficulty)
High blood pressure or heart-relate issues (long-term use)
Interactions of Reactin SR 100 mg
May interact with:
Blood thinners (e.g., warfarin)
Other NSAIDs (e.g., ibuprofen, aspirin)
Diuretics
ACE inhibitors or ARBs (used for blood pressure)
Corticosteroids
Selective serotonin reuptake inhibitors (SSRIs)
Always inform your doctor about all medications, supplements, or herbal products you are using.
Precautions for Reactin SR 100 mg
Avoid use if you have a history of gastric ulcers or bleeding.
Not recommended for people with severe liver, kidney, or heart disease.
Use with caution during pregnancy (especially third trimester) and breastfeeding.
Storage Information
Store in a cool, dry place below 25°C (77°F)
Keep away from direct sunlight and moisture
Keep out of reach of children
Availability in the US and Australia
US: Diclofenac SR 100 mg is available, though Reactin SR may not be marketed under this brand. Equivalent generics or brands are available.
Australia: Available as a prescription medication under various brand names. Consult your pharmacist or physician for local equivalents.
Frequently Asked Questions (FAQs)
1. Is Reactin SR 100 mg safe for long-term use?
Long-term use should be under medical supervision due to potential risks to the stomach, kidneys, and heart.
2. Can I take it with alcohol?
Avoid alcohol as it increases the risk of stomach bleeding and liver damage.
3. Can I use Reactin SR 100 mg for a headache?
It’s more suitable for chronic
inflammatory pain; occasional use for headaches should be discussed with a doctor.
4. Is it addictive?
No, it is not habit-forming.
5. Can I take it with paracetamol?
Yes, they work differently and can be used together for enhance pain relief—but only if advised by a doctor.
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