Modula 5 mg is likely a generic version of sildenafil, similar to brands like Viagra, and generally, generic medications tend to be less expensive than brand-name options. This is because generics are made after the original brand's patent expires, allowing multiple manufacturers to produce the same medication, which increases competition and usually leads to lower prices. While the effectiveness of a generic like Modula 5 mg should be the same as the brand-name version (since both contain the same active ingredient, sildenafil), prices can vary depending on the pharmacy, location, and whether you have insurance coverage. Generics often come at a fraction of the price of brand-name medications, so it’s common for people to opt for them when available. If you're trying to find out the exact cost difference, it's best to check with pharmacies in your area or online pharmacy options.