calbloc 20mg tablet - Nifedipine (20mg) medicine

calbloc 20mg tablet - Uses, Price, Side Effects & Substitutes

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๐Ÿญ Torrent Pharmaceuticals Ltd ๐Ÿ“ฆ Varies by brand ๐Ÿ’Š Allopathy ๐Ÿ“… Updated: Jun 28, 2026
๐Ÿ“‹ Prescription Required ๐Ÿ’Š Generic Available
Medically Reviewed
SaathiMed Expert Panel | Jun 28, 2026

What is calbloc 20mg tablet used for?

Angiblock 5mg Capsule (Nifedipine) is used to treat CARDIAC. It contains Nifedipine (20mg), which Inhibits calcium ion influx across cardiac and smooth muscle cells, leading to v. Always consult your doctor before use. Take as prescribed.

  • Generic Name: Nifedipine
  • Manufacturer: Torrent Pharmaceuticals Ltd
  • Form: Allopathy
  • Pregnancy Category: A
  • Prescription Required: Yes
๐Ÿ’ก Did You Know? The first generic medicine was introduced in India in 1970 after the Patents Act was amended.

๐Ÿ’Š calbloc 20mg tablet Uses & Benefits

Hypertension, chronic stable angina, vasospastic angina (Prinzmetal's angina), Raynaud's phenomenon

Off-label uses: Preterm labor (tocolysis), high-altitude pulmonary edema, anal fissures (topical)

๐Ÿ“‹ Drug Information

Generic Name(s)Nifedipine
Brand NameAngiblock 5mg Capsule
ManufacturerTorrent Pharmaceuticals Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassCARDIAC
Action ClassCalcium channel blockers- Dihydropyridines (DHP)
Route of AdministrationOral
StorageStore at room temperature (20-25ยฐC), protect from light and moisture
Shelf LifeAs per manufacturer

๐Ÿ”ฌ Pharmacology (PK/PD)

Pharmacokinetics

AbsorptionWell absorbed from the gastrointestinal tract after oral administration
DistributionDistributed widely throughout the body; crosses the blood-brain barrier and placenta
Protein Binding92-98% bound to plasma proteins
MetabolismExtensively metabolized in the liver via CYP3A4 to inactive metabolites
Half-Life2-5 hours (immediate release)
ExcretionPrimarily renal (70-80% as metabolites); 15% fecal
Bioavailability45-56% (due to first-pass metabolism)
Onset of Action20-30 minutes (immediate release)
Peak Plasma Time0.5-2 hours (immediate release)
Duration of Action6-8 hours (immediate release)

How It Works

Inhibits calcium ion influx across cardiac and smooth muscle cells, leading to vasodilation and reduced myocardial oxygen demand

Mechanism Steps

1Binds to L-type calcium channels in vascular smooth muscle and cardiac muscle
2Inhibits calcium influx into cells
3Reduces intracellular calcium concentration

๐Ÿ’ก How to Take calbloc 20mg tablet

Follow your doctor's prescription exactly.

โš ๏ธ Side Effects of calbloc 20mg tablet

โœ… Common Side Effects

  • Peripheral edema
  • Headache
  • Dizziness
  • Flushing
  • Palpitations
  • Nausea
  • Constipation

๐Ÿšจ Serious Side Effects

  • Severe hypotension
  • Myocardial infarction
  • Heart failure exacerbation
  • Arrhythmias
  • Stevens-Johnson syndrome
  • Gingival hyperplasia

โš ๏ธ Rare Side Effects

  • Hepatotoxicity
  • Agranulocytosis
  • Leukopenia
  • Gynecomastia
  • Photosensitivity

Consult your doctor if you experience any unusual symptoms.

๐Ÿ”ฌ Drug Interactions

โš ๏ธ DrugSeverityEffect
CYP3A4 inhibitors (e.g., ketoconazole) Major Increased nifedipine levels, risk of toxicity
CYP3A4 inducers (e.g., rifampin) Major Decreased nifedipine efficacy
Beta-blockers Major Increased risk of heart failure, hypotension
Digoxin Major Increased digoxin levels, risk of toxicity
Grapefruit juice Moderate Increased nifedipine bioavailability
Cimetidine Moderate Increased nifedipine levels

๐Ÿšจ Major Interactions

  • CYP3A4 inhibitors (e.g., ketoconazole, clarithromycin)
  • CYP3A4 inducers (e.g., rifampin, phenytoin)
  • Beta-blockers
  • Digoxin
  • Magnesium sulfate (IV)

โšก Moderate Interactions

  • Antihypertensives
  • Cimetidine
  • Grapefruit juice
  • Quinidine
  • Theophylline

โ„น๏ธ Minor Interactions

  • Antacids
  • Calcium supplements
  • Vitamin D

๐Ÿฝ๏ธ Food Interactions

Grapefruit juice increases bioavailability; avoid concurrent use

๐Ÿท Alcohol Interaction

May enhance hypotensive effect; avoid excessive alcohol

๐Ÿ›ก๏ธ Safety & Warnings

๐Ÿšซ Contraindications

Hypersensitivity to nifedipine, cardiogenic shock, severe aortic stenosis, unstable angina (except under special circumstances), within 4 weeks of myocardial infarction

๐Ÿ“Š Monitoring Parameters

Blood pressure, heart rate, ECG, signs of peripheral edema, liver function tests

๐Ÿคฑ Lactation Safety

Excreted in breast milk; use with caution, monitor infant for hypotension

๐Ÿ’Š Overdose Management

Activated charcoal, gastric lavage, IV fluids, calcium gluconate or calcium chloride, vasopressors for hypotension, atropine for bradycardia

โฐ Missed Dose

Take as soon as remembered unless close to next dose; do not double dose

๐Ÿ‘จโ€โš•๏ธ Reviewed by Expert

SaathiMed Expert Panel

MD, PhD - Pharmacology

Reviewed: Jun 28, 2026

๐Ÿ”— View Profile

๐Ÿ”„ Substitutes for calbloc 20mg tablet

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Alternative brands with exact same active ingredient (Nifedipine (20mg)):

Medical Note: Always consult your doctor before switching medications.

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