Sildenafil
100 mg · Tablet, Film Coated
- Prescription only
- Phosphodiesterase 5 Inhibitor
- Active substance
- Sildenafil
- Made by
- Macleods Pharmaceuticals Limited
- Source
- Official label
Quoted from the official source. Not yet reviewed by Mediclarum — the leaflet in your pack is authoritative.
What it is for
Mediclarum has not yet retrieved and stored the official label for this product, so none of its text is shown here. Open the official leaflet
How it works
From the US prescribing label for the same active substance (SILDENAFIL CITRATE). It describes the substance, not this exact product.
The physiologic mechanism of erection of the penis involves release of nitric oxide (NO) in the corpus cavernosum during sexual stimulation.
NO then activates the enzyme guanylate cyclase, which results in increased levels of cyclic guanosine monophosphate (cGMP), producing smooth muscle relaxation in the corpus cavernosum and allowing inflow of blood.
It is eliminated predominantly by hepatic metabolism (mainly CYP3A4) and is converted to an active metabolite with properties similar to the parent, sildenafil.
After either oral or intravenous administration, sildenafil is excreted as metabolites predominantly in the feces (approximately 80% of administered oral dose) and to a lesser extent in the urine (approximately 13% of the administered oral dose).
When sildenafil is taken with a high fat meal, the rate of absorption is reduced, with a mean delay in T max of 60 minutes and a mean reduction in C max of 29%.
Quoted from the prescribing label, sections “Mechanism of Action” and “Pharmacokinetics”. DailyMed · 2026-07-29
Safety of the active substance
From the US prescribing label for the same active substance (SILDENAFIL CITRATE). It describes the substance, not this exact product.
- Administration of sildenafil tablets to patients using nitric oxide donors, such as organic nitrates or organic nitrites in any form.
- After patients have taken sildenafil tablets, it is unknown when nitrates, if necessary, can be safely administered.
- Hypersensitivity reactions have been reported, including rash and urticaria [ see Adverse Reactions (6.1) ]. 4.3 Concomitant Guanylate Cyclase (GC) Stimulators Do not use sildenafil tablets in patients who are using a GC stimulator, such as riociguat.
- PDE5 inhibitors, including sildenafil, may potentiate the hypotensive effects of GC stimulators.
Quoted from the US prescribing label for the same active substance. Your own pack’s leaflet is the authority for your product. DailyMed
Same active substance, strength and form in other countries
Matched on active substance, strength and kind of form only. This is not a statement that the products are equivalent or interchangeable: other ingredients, release and approved uses can differ — ask a pharmacist before swapping.
Medicine passport: one printable page to show a pharmacist abroad
Bulgaria5 matching products
European UnionNo exact match for this strength and form
Netherlands1 matching products
Details
| Made by | Macleods Pharmaceuticals Limited |
|---|---|
| Active substance | Sildenafil |
| Used in | Urinary and reproductive system, hormones |
| Strength | 100 mg |
| Form | Tablet, Film Coated |
| Route | Oral |
| Packs | 30 TABLET, FILM COATED in 1 BOTTLE · 100 TABLET, FILM COATED in 1 BOTTLE |
| NDC | 33342-043 |
Source: NDC Directory · 2026-09-13 · not reviewed by a clinician
Source: US Food and Drug Administration, NDC Directory. Reuse terms: US government work (FDA).
Other strengths and forms
116 products are sold under this name. Grouped by form; a number on a strength means several companies make it.
- Tablet, Film Coated78 products
- Tablet26 products
25 mg3
25 mg · 3 companies
50 mg4
- Powder, for Suspension4 products
10 mg/mL4
- Film4 products
Show all forms · 6 forms
- For Suspension3 products
10 mg/mL3
10 mg/mL · 3 companies
- Injection, Solution1 products
Same active substance
These contain the same substance. That does not mean one can replace another — ask a pharmacist.