Who makes ethinyl estradiol, norethindrone, VI-0521?

ethinyl estradiol, norethindrone, VI-0521 is developed by VIVUS LLC.

What development phase is ethinyl estradiol, norethindrone, VI-0521 in?

ethinyl estradiol, norethindrone, VI-0521 is in Phase 1.

Last reviewed 2026-05-14 · How we verify

ethinyl estradiol, norethindrone, VI-0521

VIVUS LLC · Phase 1 active Small molecule

At a glance

Generic name	ethinyl estradiol, norethindrone, VI-0521
Also known as	VI-0521, Ortho-Novum 1/35-28
Sponsor	VIVUS LLC
Modality	Small molecule
Phase	Phase 1

Approved indications

No approved indications tracked.

Common side effects

No common side effects on file.

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape:

ethinyl estradiol, norethindrone, VI-0521 CI brief — competitive landscape report
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VIVUS LLC portfolio CI