Modula
✅ Enhances erectile function
✅ Supports sexual performance
✅ Promotes stronger erections
✅ Increases confidence and self-esteem
✅ Generic version of Cialis ®
Modula contains Tadalafil 5 mg
✓ Medically reviewed by Morgan Ellis — Pharmacy Researcher · 8 years experience · Last reviewed: May 2026
⚡ Quick Answer — What is Modula?
Modula is a brand of tadalafil, a prescription PDE5 inhibitor used to treat erectile dysfunction (ED) and the urinary symptoms of benign prostatic hyperplasia (BPH). Each tablet contains 5 mg tadalafil, suitable for once-daily low-dose therapy. Effects can last up to 36 hours, which is why tadalafil is known as the “weekend pill”. Manufactured by Sun Pharma as a generic equivalent of Cialis®.
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Modula is a widely prescribed tadalafil 5 mg tablet used to treat erectile dysfunction, benign prostatic hyperplasia, and the overlap of the two conditions. Manufactured by Sun Pharma in India to pharmaceutical-grade standards, each tablet contains the same active ingredient as Eli Lilly’s branded Cialis® — at a fraction of the price. The 5 mg strength is specifically formulated for once-daily dosing, giving men continuous cover without having to plan intimacy around a pill.
As a long-acting phosphodiesterase type 5 (PDE5) inhibitor, tadalafil has a clinical track record of more than 20 years and is recommended by urology and sexual-medicine guidelines worldwide as a first-line treatment for ED.
What Is Modula?
Modula is the Sun Pharma brand of tadalafil — a prescription PDE5 inhibitor that improves erectile function and reduces lower-urinary-tract symptoms in men. Unlike sildenafil (Viagra), which has a duration of only 4–6 hours, tadalafil’s 17.5-hour half-life produces clinical effects that can last up to 36 hours. This long window has earned Modula and its equivalents the nickname “the weekend pill”.
Modula 5 mg tablets are most frequently prescribed for:
- Erectile dysfunction — on a daily low-dose schedule or, when appropriate, as an on-demand dose
- Benign prostatic hyperplasia (BPH) — to relieve weak stream, frequency, urgency, and incomplete emptying
- Combined ED and BPH — a single daily tablet treats both
- Post-prostatectomy rehabilitation — off-label, to support erectile recovery after prostate surgery
How Does Modula Work?
Tadalafil is a selective inhibitor of phosphodiesterase type 5 (PDE5), the enzyme that breaks down cyclic guanosine monophosphate (cGMP) in the smooth muscle lining the blood vessels of the penis and prostate. Here is how it works:
- Sexual stimulation triggers the release of nitric oxide (NO) in the corpus cavernosum
- NO activates the enzyme guanylate cyclase, which raises local levels of cGMP
- cGMP relaxes the smooth muscle in penile arteries, allowing increased blood inflow and trapping blood in the erectile tissue
- Normally, PDE5 rapidly degrades cGMP, ending the erection
- Modula blocks PDE5, prolonging the action of cGMP so that a firm erection can be achieved and maintained
- In the prostate and bladder neck, the same cGMP pathway relaxes smooth muscle — which is why tadalafil also improves urinary flow in BPH
Onset of action for on-demand dosing is typically 30–60 minutes, with peak plasma concentration reached in about 2 hours. The plasma half-life of ~17.5 hours is the reason a single 10 mg or 20 mg dose can remain effective for up to 36 hours. On the daily 5 mg schedule, steady-state levels are reached within about 5 days and provide continuous cover.
Important: tadalafil does not cause an erection without sexual stimulation — it enables the body’s normal response rather than triggering it artificially.
Uses and Indications
- Erectile dysfunction — first-line pharmacological treatment in men with organic, psychogenic, or mixed ED, per American Urological Association and European Association of Urology guidelines
- Benign prostatic hyperplasia (BPH) — tadalafil 5 mg once daily is FDA-approved for the signs and symptoms of BPH
- Co-existing ED and BPH — one of the few PDE5 inhibitors licensed for this dual indication
- Pulmonary arterial hypertension (PAH) — used in a higher 40 mg dose (sold as Adcirca) for WHO Group 1 PAH
- Post-radical-prostatectomy penile rehabilitation — off-label protocol to improve long-term erectile recovery
Modula Dosage and Administration
| Indication / Schedule | Recommended Dose | Frequency / Timing |
|---|---|---|
| ED — daily low-dose | 5 mg (1 tablet) | Once daily at roughly the same time; effect builds over 4–5 days |
| ED — daily, low sensitivity | 2.5 mg (half a 5 mg tablet) | Once daily; useful in mild ED or if 5 mg causes side effects |
| BPH symptoms | 5 mg (1 tablet) | Once daily, usually at the same time each day |
| ED + BPH (combined) | 5 mg (1 tablet) | Once daily — treats both conditions in a single dose |
| ED — on-demand (alternative) | 10 mg (2 × 5 mg tablets) | At least 30 minutes before sexual activity; max 1 dose per 24 hours |
| Mild–moderate renal impairment | 2.5 mg | Daily; do not exceed 5 mg every 72 hours on-demand |
| Severe renal or hepatic impairment | Not recommended | Avoid daily use; on-demand only under specialist supervision |
| Elderly (65+) | Standard 5 mg daily | No routine dose reduction unless renal/hepatic impairment present |
| Maximum adult dose | 20 mg per 24 hours (on-demand) | Do not combine daily with on-demand dosing |
How to Take Modula Properly
- Swallow the tablet whole with water — can be taken with or without food (a fat-rich meal does not significantly alter absorption, unlike sildenafil)
- On the daily schedule, take Modula at the same time each day so steady-state levels remain consistent
- If using an on-demand 10 mg dose, allow at least 30 minutes before sexual activity; effects can persist for up to 36 hours
- Do not take more than one daily dose in a 24-hour period
- Avoid grapefruit and grapefruit juice — they inhibit the CYP3A4 enzyme that clears tadalafil and can raise blood levels
- Skip a missed daily dose if it is almost time for the next one — never double up
- Give the daily schedule at least 4 weeks of continuous use before judging effectiveness
Side Effects of Modula
Most men tolerate tadalafil well, particularly at the 5 mg daily dose. Side effects are usually mild, dose-related, and resolve without treatment.
| Severity | Side Effect |
|---|---|
| Common (≥1 in 10) | Headache, indigestion / heartburn, back pain, muscle aches (particularly in the lower back and thighs) |
| Common (≥1 in 100) | Facial flushing, nasal congestion, dizziness, pain in arms or legs, nausea |
| Uncommon (1 in 100 – 1 in 1,000) | Blurred vision, tinnitus, palpitations, hypotension, rash, hyperhidrosis |
| Rare (<1 in 1,000) | Priapism (erection lasting >4 hours), sudden vision loss (NAION), sudden hearing loss, severe hypotension, angina |
| Very rare / serious | Myocardial infarction, stroke, Stevens-Johnson syndrome, anaphylaxis |
Seek urgent medical attention if you experience an erection lasting more than 4 hours, sudden loss of vision or hearing, chest pain, fainting, or symptoms of a severe allergic reaction.
Warnings and Precautions
- Cardiovascular fitness for sex — sexual activity places cardiac demand on the heart. Men with active angina, recent heart attack (within 90 days), uncontrolled arrhythmia, or severe heart failure should have a cardiac assessment before using tadalafil
- Blood pressure — tadalafil causes mild, transient reductions in blood pressure; use with caution in men on multiple antihypertensives
- Priapism — higher risk in men with sickle-cell disease, multiple myeloma, or leukaemia
- Vision — discontinue and seek review if sudden visual changes occur; rare cases of non-arteritic anterior ischaemic optic neuropathy (NAION) have been reported
- Hearing — rare reports of sudden sensorineural hearing loss — stop Modula and consult a doctor if affected
- Alcohol — significant alcohol intake combined with tadalafil can compound dizziness, headache, and low blood pressure
- Grapefruit juice — inhibits CYP3A4 metabolism and can raise tadalafil blood levels
Contraindications — Who Should NOT Take Modula
- Concurrent use of any nitrate — GTN, isosorbide mononitrate/dinitrate, nicorandil, amyl nitrite (“poppers”) — combination can cause life-threatening hypotension
- Concurrent use of guanylate cyclase stimulators such as riociguat
- Recent heart attack (within 90 days), unstable angina, or angina during intercourse
- NYHA Class II or greater heart failure within the last 6 months
- Uncontrolled arrhythmia, hypotension (BP <90/50) or uncontrolled hypertension (BP >170/100)
- Stroke within the last 6 months
- Known non-arteritic anterior ischaemic optic neuropathy (NAION) in one or both eyes
- Severe hepatic impairment (Child-Pugh C)
- Hypersensitivity to tadalafil or any excipient
Drug Interactions
| Drug / Class | Interaction |
|---|---|
| Nitrates (GTN, ISMN, ISDN, amyl nitrite) | Absolute contraindication — severe, potentially fatal hypotension |
| Alpha-blockers (doxazosin, tamsulosin, alfuzosin) | Additive blood-pressure lowering — stabilise alpha-blocker dose before adding tadalafil; start at 2.5 mg |
| CYP3A4 inhibitors (ketoconazole, itraconazole, ritonavir, clarithromycin) | Raise tadalafil plasma levels — consider dose reduction |
| CYP3A4 inducers (rifampicin, phenytoin, carbamazepine, St John’s wort) | Lower tadalafil levels — efficacy may be reduced |
| Riociguat and other sGC stimulators | Contraindicated — severe hypotension risk |
| Other PDE5 inhibitors (sildenafil, vardenafil, avanafil) | Do not combine — additive side effects without added efficacy |
| Antihypertensives (ACEi, ARBs, calcium-channel blockers, beta-blockers, diuretics) | Small additive BP reduction — usually clinically insignificant at 5 mg daily |
| Grapefruit juice | Inhibits CYP3A4 — avoid large or regular intake |
Always share a full list of your current medications, including over-the-counter products, recreational drugs, and herbal supplements, with your prescriber before starting Modula.
What to Do in Case of Overdose
Symptoms of tadalafil overdose include severe headache, marked hypotension, dizziness, back or muscle pain, and prolonged erection. Tadalafil is highly protein-bound, so dialysis does not meaningfully lower plasma levels — management is supportive, with fluid resuscitation and cardiac monitoring. Contact your local poisons service or emergency department immediately if an overdose is suspected.
Storage Instructions
- Store below 30 °C in a dry place, away from direct sunlight
- Keep in the original blister packaging until use
- Keep out of reach of children and pets
- Do not use after the expiry date printed on the pack
- Dispose of unused tablets via a pharmacy take-back scheme where available
Related Alternatives on MedsBase
Looking for related tadalafil or ED treatment options?
- Vidalista — Centurion Labs tadalafil, available in 10, 20, 40, and 60 mg for on-demand dosing
- Tadacip — Cipla’s tadalafil 20 mg tablet
- Megalis — tadalafil 10 mg and 20 mg on-demand tablets
- Zhewitra — vardenafil, a faster-onset PDE5 alternative
- Suhagra — Cipla’s sildenafil 50 mg / 100 mg tablets
- Browse all Erectile Dysfunction treatments →
Frequently Asked Questions
How quickly does Modula start working?
For an on-demand 10 mg dose (two 5 mg tablets), most men notice effects within 30–60 minutes. On the daily 5 mg schedule, full steady-state cover is reached after about 4–5 days of continuous use.
How long does Modula last?
A single on-demand tadalafil dose can remain effective for up to 36 hours, which is why tadalafil is often called the “weekend pill”. On the 5 mg daily schedule, effect is continuous for as long as you take it.
Can I take Modula every day?
Yes — Modula 5 mg is specifically approved for once-daily use in both erectile dysfunction and benign prostatic hyperplasia. Daily dosing removes the need to plan ahead for intimacy and is preferred by many men in long-term relationships.
Modula daily vs on-demand — which is better?
Daily 5 mg suits men who want spontaneity, have predictable intimacy patterns, or also need BPH symptom relief. On-demand 10–20 mg suits men with infrequent intercourse who prefer to dose only when needed. Both approaches are equally effective on average — the right choice depends on lifestyle and your doctor’s guidance.
Is Modula the same as Cialis?
Modula contains the same active ingredient — tadalafil — at the same strength as Eli Lilly’s branded Cialis®. Manufactured by Sun Pharma in India, Modula is clinically equivalent and far more affordable. Excipients and coating may differ slightly, but pharmacological action is the same.
Can I drink alcohol with Modula?
Small amounts of alcohol are usually fine. Heavy drinking combined with tadalafil can cause dizziness, headache, and increased drop in blood pressure — and alcohol is itself a well-known cause of temporary erectile difficulties. Moderation is the sensible approach.
Can I take Modula with blood-pressure medication?
Generally yes — tadalafil is compatible with most antihypertensives including ACE inhibitors, ARBs, calcium-channel blockers, beta-blockers, and thiazide diuretics. Caution is needed with alpha-blockers (doxazosin, tamsulosin) because of additive blood-pressure lowering. Never combine Modula with nitrate medication for chest pain.
Does Modula treat BPH (enlarged prostate)?
Yes. Tadalafil 5 mg daily is FDA-approved for the signs and symptoms of benign prostatic hyperplasia — weak stream, urgency, frequency, nocturia, and incomplete emptying. It is one of the few options that addresses ED and BPH with a single tablet.
Is Modula safe for men with heart conditions?
Sexual activity itself places cardiac demand on the body. Tadalafil is generally safe in stable coronary artery disease, but is contraindicated if you use any nitrate medication, have had a heart attack in the last 90 days, or have unstable angina or severe heart failure. Always discuss your cardiac history with a doctor before starting.
Modula vs Viagra — which is better?
They share the same core mechanism but differ in kinetics. Sildenafil (Viagra) works in ~30 minutes and lasts 4–6 hours; best taken on an empty stomach. Tadalafil (Modula) works in 30–60 minutes and lasts up to 36 hours; food does not affect absorption. Men who value spontaneity or want daily dosing often prefer tadalafil; men who want a shorter, on-demand effect may prefer sildenafil.
What if Modula doesn’t work?
Give the daily 5 mg schedule a full 4 weeks before concluding it is ineffective. If you still see no benefit, options include: moving to an on-demand 10 mg or 20 mg dose, switching to another PDE5 inhibitor, addressing reversible causes (sleep, alcohol, stress, testosterone), or investigating vascular and hormonal contributors with your doctor.
Can I split a 5 mg Modula tablet in half?
Modula 5 mg tablets are not scored and are not designed to be split. If you need a 2.5 mg daily dose (for sensitivity or mild renal impairment), ask your doctor whether an alternative tadalafil formulation that is scored or supplied in 2.5 mg strength is a better option.
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