Fildena Chewable 100 mg is a chewable sildenafil formulation, so its tablet coating or outer layer can depend on the manufacturer and specific product formulation. If you're asking about the composition of the coating, the exact excipients are not always listed in general product descriptions. They may include ingredients used for flavor, appearance, texture, stability, and tablet formation. The active ingredient is typically sildenafil citrate equivalent to 100 mg sildenafil. The 100 mg strength is already the maximum usual single sildenafil dose, so it should not be increased without medical advice. For the exact coating ingredients, check the package insert, manufacturer’s product information, or the ingredient list printed on the packaging. This is especially important if you have allergies or sensitivities to particular excipients.