Karon (Alprostadil)

Alprostadil activates prostaglandin receptors on smooth‑muscle cells of the corpus cavernosum, stimulating adenylate cyclase and raising cyclic AMP levels. The increased cAMP causes smooth‑muscle relaxation, vasodilation, enhanced arterial inflow, and reduced venous outflow, resulting in an erection.

The dose of Karon is individualized by the prescribing clinician based on the patient’s condition, response, and tolerance. The prescriber determines the appropriate starting volume and any subsequent adjustments, following local regulatory guidance and clinical best practice.

Safety of alprostadil in pregnancy and lactation has not been established. Karon is not indicated for use in pregnant or nursing women, and it should be avoided unless the potential benefit justifies the potential risk under specialist supervision.

To order Karon, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including cold‑chain where required) and necessary import documentation.

The primary alternatives for erectile dysfunction are oral phosphodiesterase‑5 inhibitors such as sildenafil. Unlike those agents, Karon is delivered directly into the penis, providing rapid onset and effectiveness in patients who cannot use oral therapy due to contraindications or insufficient response. Systemic exposure is lower, but injection‑related local reactions are more common.

Karon should be stored at 2‑8 °C in a refrigerator, protected from light, and must not be frozen or shaken. Keep the product in its original packaging until use, and allow it to reach room temperature briefly before administration if required by the clinical protocol.

Karon is given as an intracavernous injection. After proper aseptic preparation, a fine needle is inserted into the lateral aspect of the corpora cavernosa, and the prescribed volume is injected slowly. The procedure should be performed by a qualified healthcare professional familiar with the technique.

The most serious risks associated with Karon include priapism lasting longer than four hours, severe hypotension, penile fibrosis, and systemic allergic reactions such as rash or anaphylaxis. Immediate medical attention is required if any of these events occur.

Karon is contraindicated in patients with known hypersensitivity to alprostadil, those with sickle cell disease, active penile infection or ulceration, and individuals with severe cardiovascular instability. It should also be avoided in patients taking concurrent potent vasodilators without specialist supervision.