Description
Hiforce (Sildenafil) 150 mg
Hiforce 150 mg is a product name associated with sildenafil, a prescription phosphodiesterase-5 (PDE5) inhibitor used for erectile dysfunction. Sildenafil is the active ingredient verified in official prescribing information for sildenafil tablets.
Active Ingredient and Medicine Class
The verified active ingredient is sildenafil. It belongs to the phosphodiesterase-5 (PDE5) inhibitor class. This medicine class works by enhancing blood flow in response to sexual stimulation.
Established Medical Uses
Sildenafil tablets are established for the treatment of erectile dysfunction. Official prescribing information identifies erectile dysfunction as the approved indication for sildenafil tablets.
How It Works
Sildenafil selectively inhibits PDE5, an enzyme involved in the breakdown of cyclic guanosine monophosphate (cGMP). By preserving cGMP signaling, it helps relax smooth muscle in the corpus cavernosum and supports erection during sexual stimulation.
Important Safety Information
Sildenafil is contraindicated with nitrate medicines because of the risk of a marked blood pressure drop. It is also contraindicated with guanylate cyclase stimulators such as riociguat. Official labeling also warns against use in patients with hypersensitivity to sildenafil and against combining sildenafil with other PDE5 inhibitors or other erectile dysfunction therapies.
Important precautions include cardiovascular risk assessment in patients for whom sexual activity may be inadvisable, and caution with alpha-blockers, ritonavir, and other medicines that can alter sildenafil exposure or blood pressure effects.
Possible Side Effects
Common adverse effects reported with sildenafil include headache, flushing, dyspepsia, nasal congestion, abnormal vision, dizziness, and rash. Serious reactions can include significant hypotension, priapism, sudden vision loss, sudden hearing loss, and severe hypersensitivity reactions.
Scientific Evidence
Peer-reviewed reviews and systematic reviews show that sildenafil is an effective oral treatment for erectile dysfunction and has been extensively evaluated for efficacy and tolerability. The published evidence also supports its recognized PDE5-inhibiting mechanism and highlights the importance of contraindications and cardiovascular precautions.
Medical Information Notice
This page is an educational summary based on sources available at the time of review and does not replace the official patient leaflet, prescribing information, or individual assessment by a qualified healthcare professional.
Medical Sources
- Official prescribing information: DailyMed, SILDENAFIL – sildenafil tablet, film coated.
- Official prescribing information: DailyMed, SILDENAFIL TABLETS, for oral use.
- Langtry HD et al. “Sildenafil: a review of its use in erectile dysfunction.” Drugs, 1999. PubMed.




