Provigil 100 mg is a prescription medicine used as part of medically supervised opioid use disorder (OUD) treatment. It combines modafinil, a partial opioid agonist. This pairing is designed to reduce withdrawal symptoms and cravings while discouraging misuse. It is not a cure, not a detox shortcut, and not appropriate for everyone. Its role is supportive care within a structured recovery plan that may also include counseling, monitoring, and long-term follow-up. Understanding what Provigil does—and what it does not do—is essential before considering any option to buy Provigil 100 mg online through legitimate medical channels. How does this medicine work? Modafinil attaches to opioid receptors with high affinity but activates them only partially. This reduces withdrawal intensity without producing the full euphoric effects of opioids. It binds tightly; taking other opioids on top of Provigil often provides little effect and increases risk. This mechanism is why timing, dosing, and medical supervision matter. Starting too early after opioid use can cause sudden withdrawal; starting too late can prolong discomfort.