Description
Modafinil 200 mg is an oral, wakefulness-promoting central nervous system (CNS) stimulant used to treat excessive sleepiness from narcolepsy, obstructive sleep apnea, and shift work disorder. The tablets contain the active ingredient modafinil, a white, crystalline racemic compound, paired with inactive binders like lactose monohydrate and microcrystalline cellulose.
Core Chemical and Physical Description
- Chemical Name: 2-[(diphenylmethyl)sulfinyl]acetamide [
- Molecular Formula: C₁₅H₁₅NO₂S [
- Appearance: Commercially, 200 mg tablets are typically white or off-white, capsule-shaped, and debossed (e.g., “PROVIGIL” and “200” on original brand versions). [
- Solubility: The active powder is practically insoluble in water, but sparingly soluble in methanol and acetone.
- Inactive Ingredients: Common fillers include lactose monohydrate, microcrystalline cellulose, pregelatinized starch, croscarmellose sodium, povidone, and magnesium stearate. [

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