Fesobig 8mg Tablet ER 10s

atom-spiralsSalt Composition:Fesoterodine Fumarate 8mg

Fesobig 8mg Tablet ER 10s is an antimuscarinic (anticholinergic) medication used to treat overactive bladder. It helps reduce symptoms of urinary frequency, urgency, and urge incontinence (leaking urine). This medicine works by relaxing the smooth muscle in the wall of the urinary bladder, increasing the amount of urine your bladder can hold and reducing sudden, involuntary bladder contractions.

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Written by: Shaik Ashraf Ali, B.pharmacy

Reviewed by: Dr. Jay Faldu, MBBS

Last updated on: 20-05-2026

Fesobig 8mg Tablet ER 10s
Fesobig 8mg Tablet ER 10s
Fesobig 8mg Tablet ER 10s
Fesobig 8mg Tablet ER 10s
Fesobig 8mg Tablet ER 10s

MSN Laboratories Ltd.

Strip of 10 tablets

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Long Expiry (>8 Months)

15 Days Easy Returns

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Detailed Description

Fesobig 8mg Tablet ER 10s is used to treat symptoms of overactive bladder (OAB), including urinary urgency, frequency, and urinary incontinence in adults. It belongs to a group of medicines called antimuscarinic agents, which affect bladder muscle function.

After oral administration,Fesobig 8mg Tablet ER 10s is converted in the body to its active form. This active metabolite works by blocking muscarinic receptors in the bladder, which helps reduce involuntary bladder contractions. As a result, it may help increase the amount of urine the bladder can hold and decrease episodes of sudden urgency and leakage.

Fesobig 8mg Tablet ER 10s is available as an extended-release tablet, usually taken once daily. The extended-release formulation allows the medicine to be released slowly over time, which may help provide consistent symptom control throughout the day.

This medicine is intended for the management of symptoms and does not cure overactive bladder. UseFesobig 8mg Tablet ER 10s exactly as prescribed by your doctor. Contact your healthcare provider if your symptoms do not improve or if they worsen.

Uses of Fesobig 8mg Tablet ER 10s

This medicine is used to treat:

  • Overactive bladder (OAB) with symptoms of urgency, frequency, and urge urinary incontinence.

Benefits of Fesobig 8mg Tablet ER 10s

  • Reduced Urgency: Helps calm the sudden, uncontrollable urge to urinate.
  • Fewer Accidents: Significantly reduces the number of leaks and episodes of urge incontinence.
  • Better Sleep: Decreases the frequency of waking up during the night to use the bathroom.

Side Effects of Fesobig 8mg Tablet ER 10s

Fesobig 8mg Tablet ER 10s may cause side effects in some people. Most are mild and temporary, but contact your doctor if they persist or worsen.

Common Side Effects:
  • Dry mouth
  • Constipation
  • Dry eyes
  • Headache
  • Drowsiness or dizziness
  • Urinary tract discomfort (burning or pain when urinating)
Uncommon Side Effects:
  • Blurred vision
  • Mild gastrointestinal upset
  • Fatigue
Serious Side Effects (Require Immediate Medical Attention):
  • Severe allergic reactions: hives, swelling of the face, lips, tongue, or throat, difficulty breathing
  • Severe stomach pain or constipation lasting several days
  • Inability to empty the bladder (urinary retention)
  • Confusion, hallucinations, or unusual mental changes
  • Painful or difficult urination

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

Directions for Use

TakeFesobig 8mg Tablet ER 10s exactly as prescribed by your doctor. Follow all directions on your prescription label.

  • Take this medicine once daily. It can be taken with or without food.
  • Swallow the tablet whole with a liquid. Do not chew, divide, or crush the tablet, as doing so destroys the extended-release mechanism.
  • Try to take the medication at the same time each day to maintain consistent levels in your body.

How it works

Fesoterodine is a prodrug that is quickly broken down by the body into its active form. This active compound blocks specific acetylcholine receptors (muscarinic receptors) located on the bladder muscle. By blocking these receptors, the drug prevents the bladder from contracting prematurely or inappropriately, effectively increasing bladder capacity and reducing the urgent need to urinate.

Safety Advice for Fesobig 8mg Tablet ER 10s

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Alcohol
Caution

Alcohol can increase the side effects of drowsiness and dizziness.

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Pregnancy
Caution

Use only if the potential benefit justifies the potential risk to the fetus.

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Breastfeeding
Limited information

It is not known whether fesoterodine is excreted in human milk.

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Driving
Caution

This medicine may cause blurred vision or dizziness. Do not drive or operate machinery until you know how it affects you.

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Liver
Caution

Dose adjustments are required in patients with liver impairment. Do not exceed 4 mg daily in moderate hepatic impairment; avoid in severe impairment.

Quick Tips for Fesobig 8mg Tablet ER 10s

  • If you suffer from dry mouth while taking this medicine, try sucking on ice chips, chewing sugarless gum, or using a saliva substitute.
  • Avoid becoming overheated. Anticholinergic medications can decrease your ability to sweat, making you more prone to heatstroke in hot environments.
  • It may take a few weeks of consistent daily use before you notice the full benefits of the medication on your bladder control.

Storage Advice

Store at room temperature away from moisture and heat. Keep out of reach of children.

Drug-Food Interaction

  • Grapefruit Juice: Grapefruit juice can increase the amount of fesoterodine in your blood. Avoid or limit grapefruit products while taking this medicine.

Interactions with Other Drugs

Tell your doctor about all your current medicines and any you start or stop using, especially:

  • Potent CYP3A4 inhibitors (like ketoconazole, itraconazole, clarithromycin, or ritonavir) — these can increase fesoterodine levels.
  • Other anticholinergic medications.

Drug-Disease Interactions

This medicine should be used with caution, or avoided, if you have:

  • Urinary retention or severe bladder outlet obstruction
  • Uncontrolled narrow-angle glaucoma
  • Gastric retention or severe gastrointestinal motility disorders
  • Myasthenia gravis
  • Severe kidney or liver disease

Daily Dose

The recommended starting dose is 4 mg once daily. Based on your response and tolerability, your doctor may increase the dose to 8 mg once daily. Do not exceed the prescribed dose.

Overdose

Seek emergency medical attention or call the Poison Help line immediately. Symptoms of an overdose may include severe anticholinergic effects like extreme dry mouth, severe dizziness, or urinary retention.

What If You Forget to take Fesobig 8mg Tablet ER 10s?

Take the missed dose as soon as you remember. If you do not remember until the next day, skip the missed dose and resume your regular daily schedule. Do not take two doses in one day.

FAQ

Fact Box

Therapeutic Class

Genitourinary agent

Action Class

Muscarinic receptor antagonist

Chemical Class

Prodrug of 5-hydroxymethyl tolterodine

Habit Forming

No

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