DoseCompass / Medications / Mydayis
Mydayis
mixed amphetamine salts, triple-bead · Amphetamine class
The longest-lasting amphetamine: a third bead pulse stretches coverage to 14–16 hours. Built for genuinely long days — and it must be taken immediately on waking to spare sleep.
*Approximate U.S. cash price for a 30-day supply with a free discount card, mid-2026. Compare current prices on GoodRx.
Available strengths
12.5 mg · 25 mg · 37.5 mg · 50 mg
How long it lasts
Typical effective duration is 14–16 hours, though metabolism, sleep, and food timing move this meaningfully for individuals. See how it compares to every other product on the duration chart.
Approximate dose equivalents
Every marketed Mydayis strength translated into five common alternatives (total-daily-dose basis). Cross-class figures (†) use the rough ~2:1 amphetamine↔methylphenidate heuristic and are the least precise.
| Mydayis | Adderall IR | Adderall XR | Vyvanse | Ritalin IR | Concerta | Focalin |
|---|---|---|---|---|---|---|
| 12.5 mg | ≈ 12.5 | ≈ 12.5 | ≈ 31.3 | ≈ 18.8 † | ≈ 22.6 † | ≈ 9.4 † |
| 25 mg | ≈ 25 | ≈ 25 | ≈ 62.5 | ≈ 37.5 † | ≈ 45.2 † | ≈ 18.8 † |
| 37.5 mg | ≈ 37.5 | ≈ 37.5 | ≈ 93.8 | ≈ 56.3 † | ≈ 67.8 † | ≈ 28.1 † |
| 50 mg | ≈ 50 | ≈ 50 | ≈ 125 | ≈ 75 † | ≈ 90.4 † | ≈ 37.5 † |
All values ≈ mg/day, from published cross-titration references and product labeling. For a custom dose or frequency, use the interactive converter.
Common questions
What strengths does Mydayis come in?
Mydayis (mixed amphetamine salts, triple-bead) is available in: 12.5, 25, 37.5, 50 mg.
How long does Mydayis last?
Typical effective duration is 14–16 hours, though individual metabolism varies.
Is there a generic Mydayis?
Yes. With a free discount card, a typical 30-day supply runs about $60–150 without insurance.
What is Mydayis equivalent to?
As a total-daily-dose approximation, Mydayis 37.5 mg is ≈ 37.5 mg Adderall XR, ≈ 93.8 mg Vyvanse, ≈ 56.3 mg/day methylphenidate (Ritalin). These are discussion figures from published cross-titration references — cross-class conversions are rougher, and actual switches are titrated by your prescriber.