Terol LA 4 mg is used to treat overactive bladder with symptoms of urge urinary incontinence, frequency, and urgency. The drug may also be used for other medical conditions as determined by your doctor. It contains the active ingredient Tolterodine tartrate, which belongs to a class of medications known as antimuscarinics. If you have an overactive bladder syndrome, you may find difficulty controlling urination; you may need to go to the toilet frequently.

Terol LA 4 mg capsules are for oral use and should be swallowed whole with water. Consult your doctor for the correct dosage of Tolterodine. Your doctor will tell you how long you need to continue treatment. Do not stop treatment if you do not see an immediate effect. Your medicine needs some time to get absorbed into the bloodstream. Finish the course of capsules as prescribed by your doctor. If you have not noticed any effect by then, inform your doctor right away. If you take too many tablets, contact your doctor immediately.

Speak to your doctor before taking Terol LA 4 mg if any of the following applies to you if you. 

• Face a problem in passing urine.   
• Suffer from hepatic insufficiency
• Have a gastrointestinal disease that affects the digestion of food
• Have renal disorders
• Suffer from neuronal disorders that affect your blood pressure, bowel movement, or sexual function
• Suffer from severe constipation
• Have low levels of potassium, calcium, or magnesium in your bloodstream
• Have problems heart complications such as a slow heartbeat, weak heart muscle, reduced blood flow to the heart, irregular heartbeat, and heart failure 

The effectiveness of Terol LA has not been established in children. Therefore, the drug should not be given to children. Tell your doctor if you are taking any other medicines.

Tolterodine may interact with other medicines. It is not recommended to use a Toterodine formulation with metoclopramide, cisapride, sotalol, procainamide, amiodarone, quinidine, or other medicines with a similar mode of action. 

You should avoid taking Terol LA 4 mg capsules if you are pregnant. It is not known whether the active substance tolterodine is excreted into breast milk. Therefore, breastfeeding is not recommended during the administration of Tolterodine.

You should see your doctor immediately if you experience the symptom of a serious allergic reaction, such as:

• trouble swallowing
• Swollen face/tongue/throat
• Hives and difficulty in breathing

You should seek immediate medical help if you experience symptoms of a hypersensitivity reaction such as rash, hives, itching, difficulty breathing. Tell your doctor immediately if you notice chest pain, breathing issues, swelling of the legs, or difficulty breathing even at a resting state. Common side effects associated with the use of Tolterodine are dry mouth, headache, vertigo, dry eyes, bronchitis, dizziness, blurred vision, sleepiness, the sensation of pins and needles in the fingers and toes.