Drug Class: 5-Alpha Reductase Inhibitor + Alpha-1 Adrenergic Receptor Blocker Combination | Form: Modified-Release Oral Capsule | Prescription Status: Prescription Only (Rx) — DRAP Registered
What is Maxflow-D Capsule? Maxflow-D contains Dutasteride 0.5mg and Tamsulosin 0.4mg — a fixed-dose combination of two complementary medicines addressing both the structural and functional components of benign prostatic hyperplasia (BPH) simultaneously. Dutasteride shrinks the enlarged prostate over months by blocking the hormonal driver of prostate growth while Tamsulosin immediately relaxes the smooth muscle of the prostate and bladder neck — providing rapid symptom relief while the slower prostate size reduction takes effect. Clinical trials have demonstrated that this combination produces significantly greater improvement in urinary symptoms and reduced risk of acute urinary retention and BPH-related surgery compared to either medicine used alone — making Maxflow-D the preferred treatment for moderate to severe symptomatic BPH in men with enlarged prostates. It is for use in adult males only and must never be handled by women or children.
What is Maxflow-D Capsule Used For?
- Benign prostatic hyperplasia — enlarged prostate causing urinary symptoms in adult men (پروسٹیٹ گلینڈ کا بڑھنا)
- Urinary hesitancy and weak stream — difficulty starting and maintaining urine flow (پیشاب کا کمزور بہاؤ)
- Frequent urination — particularly troublesome nighttime urination (بار بار پیشاب آنا — خاص طور پر رات کو)
- Urinary urgency — sudden strong urge to urinate that is difficult to delay (پیشاب کی ہنگامی ضرورت)
- Incomplete bladder emptying — sensation of residual urine after voiding
- Prevention of acute urinary retention — reducing risk of sudden complete inability to urinate requiring catheterisation
- Reducing need for BPH-related surgery — long-term prostate volume reduction
How Does it Work? Dutasteride 0.5mg is a dual 5-alpha reductase inhibitor — blocking both type 1 and type 2 isoenzymes that convert testosterone to dihydrotestosterone (DHT) in the prostate. DHT is the primary hormonal driver of prostate growth — by reducing DHT levels by over 90%, Dutasteride causes gradual prostate volume reduction of approximately 20 to 30% over 3 to 6 months, addressing the root structural cause of BPH. Tamsulosin 0.4mg selectively blocks alpha-1A and alpha-1D adrenergic receptors in prostatic smooth muscle, bladder neck, and urethra — causing immediate muscle relaxation that widens the urinary channel and improves urine flow within days of starting treatment. Together Tamsulosin provides rapid symptom relief while Dutasteride delivers the long-term prostate shrinkage that prevents disease progression and reduces complication risk.
Dosage and Administration
⚠️ For adult males only — women and children must never handle crushed or broken capsules as Dutasteride is absorbed through skin and causes serious hormonal harm. Swallow capsule whole — never crush or chew. Take once daily with or after the same meal each day. PSA levels must be checked before and during treatment — Dutasteride reduces PSA by approximately 50% which must be accounted for when monitoring for prostate cancer. Takes 3 to 6 months for full prostate shrinkage benefit.
| Indication | Usual Adult Male Dose | Frequency | Notes |
|---|---|---|---|
| Symptomatic BPH with enlarged prostate | 1 capsule (0.5mg/0.4mg) | Once daily | Same time each day with meal |
| BPH — prevention of urinary retention | 1 capsule (0.5mg/0.4mg) | Once daily | Long-term use under urologist supervision |
Active Ingredients
| Ingredient | Strength |
|---|---|
| Dutasteride | 0.5mg |
| Tamsulosin Hydrochloride | 0.4mg |
Who Should NOT Take Maxflow-D Capsule?
- Women — strictly contraindicated; Dutasteride causes serious foetal abnormalities in male foetuses if pregnant women are exposed
- Children and adolescents — never indicated in paediatric patients
- Allergy to Dutasteride, Tamsulosin, other 5-alpha reductase inhibitors, sulphonamide-derived medicines, or any component
- Severe liver impairment — Dutasteride extensively hepatically metabolised; accumulation risk
- Severe kidney impairment — Tamsulosin accumulates in severe renal failure
- Orthostatic hypotension history — Tamsulosin significantly increases risk of severe postural blood pressure drop
- Currently taking other alpha-blockers — additive severe hypotension risk
- Scheduled for cataract surgery — Tamsulosin causes intraoperative floppy iris syndrome; inform ophthalmologist before any eye surgery
Side Effects
Common: Ejaculatory dysfunction — reduced ejaculate volume or retrograde ejaculation (مردوں میں منی کی مقدار میں کمی — عام اور عموماً بے ضرر), decreased libido — reduced sexual desire particularly in early treatment (جنسی خواہش میں کمی), erectile dysfunction — difficulty achieving or maintaining erection, dizziness especially on standing from Tamsulosin component (اٹھتے وقت چکر), mild nasal congestion, mild headache — most sexual side effects reduce after the first few months of treatment.
Serious — Stop and seek emergency help immediately: Severe orthostatic hypotension — sudden severe drop in blood pressure with fainting on standing particularly after first dose (بے ہوشی — فوری مدد لیں), severe allergic reaction — sudden widespread rash, swelling of face, lips, or throat, difficulty breathing (فوری ہسپتال جائیں), angioedema — rare but serious swelling of face and throat (فوری مدد لیں), priapism — prolonged painful erection lasting more than 4 hours from Tamsulosin component (فوری ہسپتال جائیں — طبی ہنگامی صورتحال), significant breast tenderness or enlargement — gynaecomastia from Dutasteride antiandrogenic effect (ڈاکٹر کو بتائیں), breast lumps or nipple discharge — report immediately for cancer exclusion, severe liver reactions — yellowing of skin or eyes (یرقان — فوری مدد لیں).
Drug Interactions
| Medicine | Interaction |
|---|---|
| Other alpha-blockers (Doxazosin, Prazosin, Alfuzosin) | Severely additive hypotension from Tamsulosin — dangerous blood pressure drop; never combine |
| Antihypertensives | Additive blood pressure lowering from Tamsulosin component — increased postural hypotension risk |
| Strong CYP3A4 inhibitors (Ketoconazole, Ritonavir) | Significantly increase Dutasteride blood levels — increased side effect risk; use with caution |
| CYP2D6 inhibitors (Paroxetine, Fluoxetine) | Increase Tamsulosin blood levels — increased hypotension and side effect risk |
| Verapamil / Diltiazem | Increase Dutasteride and Tamsulosin blood levels — monitor for increased side effects |
| PDE-5 inhibitors (Sildenafil, Tadalafil) | Additive blood pressure lowering with Tamsulosin — significant hypotension risk; use with extreme caution |
| Warfarin | Dutasteride may interact with Warfarin metabolism — INR monitoring recommended |
| Cimetidine | Increases Tamsulosin blood levels by reducing renal clearance — monitor closely |
| Alcohol (شراب) | Increases Tamsulosin vasodilatory and blood pressure lowering effect — dizziness and fainting risk |
Storage: Store below 25°C in a cool, dry place. Protect from moisture and direct sunlight. Keep out of reach of children and women (بچوں اور خواتین کی پہنچ سے دور رکھیں — Dutasteride جلد سے جذب ہوتا ہے). Do not use after expiry date. Swallow capsule whole — never crush or open.
FAQs
Q: How long does Maxflow-D take to improve urinary symptoms and when is maximum benefit achieved? Tamsulosin produces noticeable improvement in urine flow and urinary symptoms within 2 to 4 weeks — providing relatively rapid relief from hesitancy, weak stream, and frequency. Dutasteride's prostate shrinkage effect develops gradually over 3 to 6 months — with maximum prostate volume reduction and full symptomatic benefit from the combination typically achieved after 6 to 12 months of consistent daily use. Treatment should be continued long-term under urologist supervision for sustained benefit.
Q: Why must PSA levels be interpreted differently in men taking Maxflow-D? Dutasteride reduces prostate-specific antigen (PSA) levels by approximately 50% within 6 months — regardless of whether prostate cancer is present. This means a PSA result in a man on Dutasteride must be doubled to estimate the true underlying PSA level for comparison with normal ranges used for prostate cancer screening. Always inform your urologist and any doctor ordering PSA tests that you are taking Dutasteride — failure to account for this reduction can mask a rising PSA that warrants investigation for prostate cancer.
Q: Why must women never handle Maxflow-D capsules and what should happen if a pregnant woman accidentally touches the contents? Dutasteride is a potent 5-alpha reductase inhibitor absorbed through skin — if a pregnant woman handling crushed or leaking capsules absorbs Dutasteride it can cause abnormal development of the external genitalia in a male foetus (feminisation of male foetal genitalia). Capsules must always be swallowed whole by the male patient only — if a woman of childbearing age or pregnant woman accidentally contacts the capsule contents, the affected skin must be washed immediately with soap and water and medical advice sought promptly.
Medical Disclaimer: This information is for general awareness only and does not replace medical advice. Always consult a qualified doctor or pharmacist before taking any prescription medicine.