Vidalista is a medicine containing tadalafil, the same active ingredient found in Tadalista. It is used to treat erectile dysfunction (ED). Never combine Vidalista with Cenforce or nitrate medicines. Seek urgent care for the serious symptoms listed above.
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Fildena, it's a brand of sildenafil used for erectile dysfunction. I found current listings for Fildena 100 and other strengths from Indian pharmaceutical suppliers.
https://www.genericday.com/fildena.html

Fildena, it’s a brand of sildenafil, a medicine used to treat erectile dysfunction (ED). It works by increasing blood flow to the penis when you’re sexually stimulated. Common side effects include headache, flushing, indigestion, nasal congestion, and dizziness. Do not take it with nitrate medicines (such as nitroglycerin) because the combination can cause a dangerous drop in blood pressure. It should be used according to a doctor’s advice, especially if you have heart or blood-pressure problems.



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Zhewitra 40 mg is an erectile-dysfunction medicine containing vardenafil 40 mg, a PDE-5 inhibitor. However, 40 mg is higher than the usual recommended maximum dose of vardenafil (20 mg). So I would not recommend taking Zhewitra 40 mg without a doctor specifically prescribing that dose.

https://www.genericday.com/zhewitra-40-mg.html

Vigora 50 mg is a brand of sildenafil 50 mg, used to treat erectile dysfunction (ED). Typical use: Take about 1 hour before sexual activity; it can work within roughly 30–60 minutes. It can be taken with or without food, but a heavy/high-fat meal may delay the effect. Sexual stimulation is required for it to work. Do not take more than one dose in 24 hours. Do not combine it with Silagra, Fildena, or other sildenafil/PDE-5 medicines.



https://www.genericday.com/vigora-50-mg.html