Buy Modalert 200 is a prescription drug used to treat the sleep disorder narcolepsy and obstructive sleep apnea. It works by stimulating the brain to help you stay awake and alert. It can also help improve your focus, memory, and overall cognitive enhancement. It contains both R-modafinil and S-modafinil. It is similar to Artvigil 150 but with fewer side effects and a longer half-life.

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