Description
Filagra gel shot (Sildenafil)
Filagra gel shot 100 mg appears to be a sildenafil product in an oral gel/sachet format. Sildenafil is a prescription phosphodiesterase type 5 (PDE5) inhibitor used for erectile dysfunction in men. The trade name “Filagra gel shot” itself could not be independently verified from an official regulatory source, so this description is based on the verified active ingredient, sildenafil.
Active Ingredient and Medicine Class
Active ingredient: sildenafil.
Medicine class: PDE5 inhibitor. This class improves erectile function by enhancing the nitric oxide–cGMP signaling pathway in penile tissue.
Established Medical Uses
Sildenafil is established for the treatment of erectile dysfunction. Official prescribing information identifies erectile dysfunction as its approved indication in standard oral tablet products. Clinical reviews and meta-analyses also support its benefit in improving erectile function and successful intercourse attempts compared with placebo.
How It Works
During sexual stimulation, nitric oxide increases cyclic guanosine monophosphate (cGMP) in erectile tissue, which relaxes smooth muscle and increases blood flow. Sildenafil blocks PDE5, the enzyme that breaks down cGMP, helping preserve this signal and support erection. Its effect is dependent on sexual stimulation and does not itself create arousal.
Important Safety Information
Sildenafil is contraindicated with nitrates or nitric oxide donors because of the risk of marked blood pressure lowering. It should also not be used with guanylate cyclase stimulators such as riociguat. Caution is needed with alpha-blockers, antihypertensive medicines, strong CYP3A4 inhibitors, and in people with cardiovascular disease where sexual activity may be inadvisable. Rare but important risks include priapism, sudden vision loss, and hearing problems.
Possible Side Effects
Common adverse effects include headache, flushing, dyspepsia, nasal congestion, and visual disturbance. Less common but serious reactions can include prolonged erection, priapism, sudden decrease or loss of vision, and hypersensitivity reactions such as rash or urticaria.
Scientific Evidence
Randomized trials and meta-analyses show that sildenafil improves erectile function and increases the likelihood of successful intercourse compared with placebo across a range of erectile dysfunction causes. Safety reviews found that most adverse effects are mild to moderate and transient, with serious sildenafil-related events uncommon in clinical trials.
Medical Information Notice
This summary is based on sources available at the time of review and is provided for educational purposes only. It does not replace the official patient leaflet or assessment by a qualified healthcare professional.
Medical Sources
- U.S. National Library of Medicine / DailyMed — Sildenafil Citrate Tablets, Prescribing Information
- Langtry HD, Markham A. “Sildenafil: a review of its use in erectile dysfunction.” Drugs (1999). PubMed




