Product image of Kronalis (Tadalafil) supplied by GNH India

Kronalis

Active Ingredient:
Tadalafil
Origin:
EU

Kronalis (Tadalafil)

Tadalafil, the active ingredient in Kronalis, is a phosphodiesterase type 5 (PDE5) inhibitor presented as an oral tablet for oral use. It treats erectile dysfunction, benign prostatic hyperplasia, and pulmonary arterial hypertension in adult patients.

GNH India supplies Kronalis as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, providing reliable sourcing, regulatory support and consistent quality for global healthcare markets.

Manufacturer / TM Owner

Laboratoires Majorelle

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Indications & Clinical Uses

Tadalafil acts on the phosphodiesterase‑5 pathway to improve smooth muscle relaxation in several target organs.

  • Erectile dysfunction: improves ability to achieve and maintain an erection in men with this condition.
  • Benign prostatic hyperplasia: reduces urinary symptoms by relaxing prostate and bladder‑neck smooth muscle.
  • Pulmonary arterial hypertension: lowers pulmonary arterial pressure and improves exercise capacity in affected patients.

How It Works

  • Tadalafil selectively inhibits the enzyme phosphodiesterase‑5 (PDE5), preventing the breakdown of cyclic guanosine monophosphate (cGMP) in vascular smooth‑muscle cells. Elevated cGMP levels lead to relaxation of smooth muscle in the corpus cavernosum, prostate, bladder neck and pulmonary vasculature, enhancing blood flow and reducing vascular resistance. The effect is sustained for up to 36 hours, allowing flexible timing of sexual activity or continuous daily dosing for chronic conditions.

Side Effects

Tadalafil may cause a range of adverse reactions, which are categorized by frequency and severity.

Common Side Effects

  • Headache
  • Flushing
  • Indigestion
  • Nasal congestion
  • Back pain

Serious or Rare Side Effects

  • Vision loss
  • Priapism (prolonged erection)
  • Sudden hearing loss
  • Severe hypotension
  • Allergic reactions such as rash or anaphylaxis

Precautions & Warnings

Before prescribing Kronalis, clinicians should evaluate patient history and follow safety measures.

  • Cardiovascular assessment: review heart disease, recent myocardial infarction, and uncontrolled hypertension.
  • Concomitant nitrate therapy: avoid use with nitrates due to risk of severe hypotension.
  • Alpha‑blocker use: use with caution and monitor blood pressure.
  • CYP3A4 inhibitor use: adjust dose or monitor for increased exposure.
  • Store below 25°C: keep in the original packaging, protect from moisture.

Avoid Interactions

Tadalafil interacts with several medicines; some combinations must be avoided while others require monitoring.

Major Interactions (Avoid)

  • Nitrates (e.g., nitroglycerin, isosorbide dinitrate).
  • Guanylate cyclase stimulators (e.g., riociguat).
  • Potent CYP3A4 inhibitors (e.g., ketoconazole, clarithromycin).
  • Alpha‑blockers (e.g., prazosin) in patients at risk of hypotension.

Moderate Interactions (Monitor Closely)

  • Antihypertensives (e.g., beta‑blockers, calcium channel blockers).
  • Other PDE5 inhibitors (combined use may increase adverse effects).
  • CYP3A4 inducers (e.g., rifampin, carbamazepine).
  • Alcohol and grapefruit juice, which can modify plasma levels.

Frequently Asked Questions

Kronalis contains the active ingredient tadalafil and is indicated for the treatment of erectile dysfunction, benign prostatic hyperplasia (BPH), and pulmonary arterial hypertension in adult patients. It improves blood flow in specific vascular beds to address these conditions.

Tadalafil works by selectively inhibiting the phosphodiesterase‑5 (PDE5) enzyme, which increases cyclic GMP levels in smooth‑muscle cells. Higher cGMP causes relaxation of smooth muscle in the penis, prostate, bladder neck and pulmonary arteries, enhancing blood flow and reducing vascular resistance.

The dosage of Kronalis is individualized by the prescribing healthcare professional based on the specific indication, patient response, and tolerability. Typical regimens may involve a daily low dose for chronic conditions or an as‑needed dose for erectile dysfunction, but the exact schedule must be set by the prescriber.

Safety of tadalafil in pregnancy and lactation has not been established. It is generally contraindicated during pregnancy and not recommended for breastfeeding women. Women who are pregnant, planning to become pregnant, or nursing should discuss alternative therapies with their healthcare provider.

To order Kronalis, submit an enquiry on the product page at gnhindia.com specifying the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide, and will request verification of trade or institutional credentials. The team then replies with pricing, availability, shipping details and any required import documentation.

The most common alternative to tadalafil is sildenafil, another PDE5 inhibitor. Both improve erectile function, but tadalafil has a longer half‑life, providing up to 36 hours of activity, which allows more flexible timing. Sildenafil typically requires dosing on an as‑needed basis and has a shorter duration of action.

Kronalis tablets should be stored below 25 °C in their original container, protected from moisture and direct sunlight. Keep the product out of reach of children and avoid exposure to high humidity or temperature extremes to maintain potency.

Kronalis is taken orally as a tablet. Swallow the tablet whole with a glass of water; it may be taken with or without food. Follow the prescribing clinician’s instructions regarding timing relative to sexual activity or daily dosing for chronic conditions.

Serious adverse events include priapism (a painful erection lasting longer than four hours), sudden loss of vision, sudden loss of hearing, severe hypotension, and allergic reactions such as rash or anaphylaxis. Patients experiencing any of these symptoms should seek immediate medical attention.

Kronalis should not be used by patients who are taking nitrates for chest pain, have severe uncontrolled hypertension, recent myocardial infarction or stroke, or have a known hypersensitivity to tadalafil or any component of the formulation. Consultation with a healthcare professional is essential before starting therapy.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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