ED medicine ingredients
Browse five ingredient hubs and connect each ingredient to named product profiles.
Ingredient reference
Sildenafil
The ingredient in Viagra and selected branded generics.
Tadalafil
The ingredient in Cialis and Tadacip; daily and as-needed regimens.
Vardenafil
The ingredient in Levitra, with formulation-specific guidance.
Avanafil
The ingredient in Spedra and Stendra, with separate market records.
Alprostadil
A different medicine family, including formulation-specific cream coverage.
Ingredient, brand and formulation
Ingredients are the active substances in medicines. A brand identifies a particular product; the formulation describes how it is supplied. The hubs below keep these relationships together, so general ingredient guidance does not need to be repeated in every brand profile.
The four oral ingredients have separate hubs. Alprostadil has its own hub because its formulations require different instructions.