Voveran SR

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Voveran SR 75 mg is a sustained-release diclofenac sodium tablet manufactured by Novartis. Diclofenac is one of the most potent oral NSAIDs in routine clinical use — roughly twice as strong per milligram as ibuprofen — and the sustained-release formulation smooths out plasma levels to give 8 to 12 hours of cover from a single dose. This is particularly useful in chronic inflammatory pain where round-the-clock relief is needed.

Voveran SR is a cornerstone of pain management in European and Asian cardiology, orthopaedic, rheumatology, and general practice. It is on the WHO Essential Medicines List and remains one of the most prescribed NSAIDs worldwide despite its known cardiovascular concerns, reflecting its strong anti-inflammatory effect and broad evidence base.

What Is Voveran SR Used For?

• Osteoarthritis and rheumatoid arthritis — symptomatic relief of joint pain, swelling, and morning stiffness
• Ankylosing spondylitis — inflammatory back pain
• Acute gout — high-dose short course during a flare
• Post-operative pain — especially orthopaedic and dental procedures
• Acute musculoskeletal injury — ligament sprain, muscle strain, soft tissue injury
• Primary dysmenorrhoea (period pain)
• Renal colic and biliary colic — strong visceral pain relief via prostaglandin inhibition
• Migraine — acute attack (occasionally used, though not first-line)

How Does Diclofenac Work?

Diclofenac is a non-selective NSAID — it blocks both COX-1 (which maintains stomach lining, platelet function, and kidney perfusion) and COX-2 (which is upregulated at sites of inflammation). This broad action explains both its strong anti-inflammatory effect and its well-known gastrointestinal and renal side-effect profile.

The therapeutic chain of events is the same for every NSAID:

1. Tissue injury or inflammation releases phospholipids from cell membranes
2. Phospholipase A₂ converts them to arachidonic acid
3. Cyclooxygenase (COX-1/COX-2) converts arachidonic acid to prostaglandins — the molecules responsible for pain, swelling, and fever
4. Diclofenac blocks the COX enzymes, so less prostaglandin is produced, so there is less pain and inflammation

Because prostaglandins also protect the stomach lining, regulate kidney blood flow, and influence platelet function, the same mechanism that relieves pain is also responsible for the main NSAID side effects: stomach irritation, fluid retention, high blood pressure, and (in some individuals) kidney stress.

Voveran SR Dosing

Adults:

• Osteoarthritis, rheumatoid arthritis, ankylosing spondylitis: one 75 mg SR tablet once or twice daily with food
• Acute musculoskeletal pain: 75 mg SR twice daily for up to 7–10 days, then review
• Acute gout flare: 75 mg SR twice daily for the first 48–72 hours, stepping down as inflammation settles
• Maximum: 150 mg/day (two SR tablets)

Swallow the SR tablet whole with a glass of water, with or after food. Do not crush, break, or chew — this destroys the sustained-release matrix and causes a rapid release of the full 75 mg dose, greatly increasing GI and cardiovascular risk.

Space the two daily doses roughly 12 hours apart (e.g. 8 a.m. and 8 p.m.). If you forget a dose, take it when you remember unless your next dose is due within 4 hours — in that case skip it.

Who Should Not Take Voveran SR?

• Known hypersensitivity to Diclofenac or any NSAID
• Active or recurrent peptic ulcer, GI bleed, or GI perforation
• Asthma, urticaria, or rhinitis precipitated by aspirin or another NSAID (“aspirin-exacerbated respiratory disease”)
• Severe heart failure (NYHA class IV)
• Severe hepatic impairment (Child–Pugh C)
• Severe renal impairment (CrCl < 30 mL/min)
• Third trimester of pregnancy (risk of premature ductus arteriosus closure and oligohydramnios)
• Recent coronary artery bypass graft surgery (CABG) — absolute contraindication for all NSAIDs

Diclofenac-specific: Particular caution in patients with established ischaemic heart disease, peripheral arterial disease, cerebrovascular disease, or congestive heart failure — the European Medicines Agency and NICE consider diclofenac to carry cardiovascular risks similar to selective COX-2 inhibitors. In these groups, naproxen or ibuprofen (<1,200 mg/day) are usually preferred.

Cardiovasculair risico

All NSAIDs (except low-dose aspirin) carry some increase in the risk of heart attack and stroke, and can worsen heart failure. The risk is dose- and duration-dependent and is generally highest with COX-2 selective agents and with diclofenac. Patients with established ischaemic heart disease, peripheral arterial disease, stroke, or uncontrolled hypertension should use non-selective NSAIDs (ibuprofen or naproxen) at the lowest effective dose, or use paracetamol instead where possible.

Renal (kidney) safety

NSAIDs reduce renal prostaglandin production, which can cause salt and water retention, raise blood pressure, and — in vulnerable patients — cause acute kidney injury. High-risk groups are the elderly, patients on ACE inhibitors/ARBs plus diuretics (the “triple whammy”), anyone dehydrated (vomiting, diarrhoea, heat, heavy exercise), and those with pre-existing CKD. Stop the NSAID and seek medical review if you develop reduced urine output, swelling, or unexplained weight gain.

Common Side Effects of Voveran SR

Common (1–10%):

• Dyspepsia, nausea, abdominal pain
• Diarrhoea or constipation
• Hoofdpijn, duizeligheid
• Elevated liver enzymes (usually mild and reversible)
• Skin rash, pruritus

Zeldzaam maar belangrijk:

• Peptic ulcer and GI bleeding
• Hypertension, fluid retention, heart failure aggravation
• Myocardial infarction, stroke (especially with long-term use)
• Acute kidney injury — particularly with ACE inhibitor/ARB + diuretic combinations
• Serum sickness, angioedema

Zeldzaam: severe hepatotoxicity, Stevens-Johnson syndrome, aseptic meningitis. Stop Voveran SR and seek urgent review if you develop yellowing of the skin/eyes, severe abdominal pain, blood in stools or vomit, or a blistering rash.

Voveran SR vs Voveran IR and Topical Forms

• Voveran SR 75 mg — sustained release, BID dosing, for chronic/sub-acute inflammatory pain
• Voveran 50 mg IR — immediate release, TID dosing, faster onset for acute pain
• Voveran Emulgel (topical) — local application; minimal systemic absorption; first choice for localised joint/muscle pain in patients with GI or CV risk

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Veelgestelde vragen

What is Voveran SR used for?

Voveran SR (diclofenac sodium 75 mg sustained-release) is used for chronic pain and inflammation — osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, acute musculoskeletal injuries, post-operative pain, renal colic, and acute gout.

How long does Voveran SR take to work?

Onset of pain relief is typically 1–2 hours. Because it is sustained release, the peak is broader but slower than immediate-release diclofenac. Anti-inflammatory effect builds over 1–2 weeks of regular dosing.

Is Voveran SR safer than immediate-release diclofenac?

The sustained-release form smooths out peak plasma levels, which may slightly reduce GI upset, but the total daily exposure and long-term risk profile is the same. Cardiovascular and renal risks are driven by total dose and duration, not formulation.

Can I take Voveran SR with paracetamol?

Yes. Paracetamol acts on different pathways and is safe to combine with diclofenac. This combination is commonly used for moderate post-operative and musculoskeletal pain.

Should I take Voveran SR with food?

Yes — always take with food or milk. This reduces gastric irritation. Never take on an empty stomach.

Can I drink alcohol while taking Voveran SR?

Light social drinking is usually tolerated. Regular or heavy alcohol use sharply raises the risk of gastritis and GI bleeding with any NSAID and should be avoided.

Is Voveran SR safe if I have heart disease?

Diclofenac carries cardiovascular risks comparable to selective COX-2 inhibitors. Patients with established ischaemic heart disease, peripheral arterial disease, stroke, or heart failure should generally choose naproxen or low-dose ibuprofen instead. Discuss with your doctor before starting.

Can I crush or break the Voveran SR tablet?

No. The sustained-release matrix must stay intact. Crushing releases the full 75 mg at once, which causes a large, fast peak and increases GI and cardiovascular risk.

Is it safe to take Voveran SR long-term?

Long-term therapy is possible in chronic conditions like rheumatoid arthritis but should be at the lowest effective dose, always with a proton pump inhibitor (omeprazole, pantoprazole) for GI protection, and with regular review of blood pressure, kidney function, and liver enzymes.

Can I take Voveran SR in pregnancy?

Voveran SR should be avoided after 20 weeks of pregnancy and is absolutely contraindicated in the third trimester. In the first and second trimesters, use only under specialist advice, and prefer paracetamol when possible.

What is the difference between Voveran SR and Dynapar?

Voveran SR is diclofenac alone in a sustained-release form. Dynapar (in this pack strength) combines diclofenac 50 mg with paracetamol 325 mg for broader pain relief via two mechanisms, usually dosed three times daily.

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