<span dir="auto" style="vertical-align: inherit;"><span dir="auto" style="vertical-align: inherit;">Modvigil 200 mg</span></span> <span dir="auto" style="vertical-align: inherit;"><span dir="auto" style="vertical-align: inherit;"> may feel less effective for a number of reasons. It can slow absorption and lessen the first effects if taken after a large, high-fat meal. Perceived advantages may also be diminished by irregular sleep patterns, staying up too late, or using it to combat severe sleep deprivation. Modafinil's metabolism can be altered by several drugs, such as hormonal contraceptives and some antiepileptics. Overuse of caffeine, dehydration, or tolerance from repeated unsupervised consumption can all lessen its effects.</span></span>