Modalert 200 vs Modvigil 200 vs Artvigil 150 vs Artvigil 250
This comparison explains the differences between Modalert 200, Modvigil 200, Artvigil 150, and Artvigil 250. The key differences between these products come from the active molecule used, the tablet strength, and the pharmacokinetic duration profile.
Product Comparison Overview
These products fall into two molecule families:
Modafinil (racemic; R + S enantiomers)
Modafinil is a 1:1 racemic compound consisting of both R- and S-enantiomers. These enantiomers have different pharmacokinetic characteristics, which together define the overall modafinil duration profile.
Armodafinil (R-enantiomer only)
Armodafinil contains only the R-enantiomer of modafinil. This molecule difference represents the primary scientific distinction between modafinil and armodafinil products.
Comparison Table
| Brand | Strength | Molecule | Duration Profile |
|---|---|---|---|
| Modalert 200 | 200 mg | Modafinil (R + S racemate) | Long-acting (modafinil class) |
| Modvigil 200 | 200 mg | Modafinil (R + S racemate) | Long-acting (modafinil class) |
| Artvigil 150 | 150 mg | Armodafinil (R-enantiomer) | Long-acting; higher late-day exposure vs modafinil (mg-to-mg) |
| Artvigil 250 | 250 mg | Armodafinil (R-enantiomer) | Long-acting; higher late-day exposure vs modafinil (mg-to-mg) |
What “Duration Profile” Means
Modafinil Duration Profile (Modalert 200 / Modvigil 200)
Modafinil is described in pharmacological literature as a racemic compound consisting of R and S enantiomers with differing pharmacokinetics. In clinical discussions, modafinil is typically categorized as a long-acting wakefulness-promoting compound.
Key takeaway: When the molecule and strength are the same (200 mg modafinil), the expected duration profile follows the typical modafinil pharmacological pattern.
Armodafinil Duration Profile (Artvigil 150 / Artvigil 250)
Armodafinil contains only the R-enantiomer of modafinil. Pharmacokinetic studies indicate that armodafinil can produce higher plasma concentrations later in the day compared with modafinil on a milligram-to-milligram basis.
Key takeaway: Armodafinil products are also long-acting, but their pharmacokinetic pattern often shows stronger late-day exposure compared with racemic modafinil.
Brand-by-Brand Summary
Modalert 200
Molecule: Modafinil (R + S racemate)
Strength: 200 mg
Manufacturer: Sun Pharma
Duration Profile: Long-acting (modafinil class)
Modvigil 200
Molecule: Modafinil
Strength: 200 mg
Manufacturer: HAB Pharmaceuticals
Duration Profile: Long-acting (modafinil class)
Artvigil 150
Molecule: Armodafinil (R-enantiomer)
Strength: 150 mg
Manufacturer: HAB Pharmaceuticals
Duration Profile: Long-acting with higher late-day exposure vs modafinil
Artvigil 250
Molecule: Armodafinil (R-enantiomer)
Strength: 250 mg
Manufacturer: HAB Pharmaceuticals
Duration Profile: Long-acting with higher late-day exposure vs modafinil
Conclusion
In this comparison, Modalert 200 and Modvigil 200 are modafinil products containing the racemic R+S compound, while Artvigil 150 and Artvigil 250 contain armodafinil, which is the R-enantiomer of modafinil. Pharmacokinetic research indicates that armodafinil typically produces higher late-day plasma concentrations than modafinil on a milligram-to-milligram basis, which contributes to its distinct duration profile.