Vidalista 20 and Vidalista 60 are both medications used to treat erectile dysfunction (ED) in men. They contain the active ingredient Tadalafil, which works by increasing blood flow to the penis during sexual stimulation, helping to achieve and maintain an erection.

Vidalista 20 contains 20mg of Tadalafil, while Vidalista 60 contains 60mg. The main difference between the two is the strength of the dosage. Vidalista 60 may be prescribed for men who require a higher dose of Tadalafil to effectively treat their ED.

Modalert 200 are brand names for drugs that include the active component modafinil, a wakefulness-promoting substance. Both drugs are widely prescribed to treat excessive daytime drowsiness caused by narcolepsy, obstructive sleep apnea, and shift work sleep disorder.