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Huntsville Hospital

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Medications not yet evaluated by P&T are considered NON-FORMULARY . . . . . Always check 2 unique patient identifiers - NAME and DATE OF BIRTH - at every step! . . . . . Please be sure to document all clinical activities daily.

Huntsville Hospital

Approved Hospital Formulary

Suggestions or Corrections? Above and Beyond Nominations Formulary Request

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conjugated estrogens

conjugated estrogens

Formulary Estrogen Formulary
Non-formulary
Therapeutic Interchange

Drug Name	Form	Strength
Premarin Intravenous	POWDER FOR INJECTION, INJECTABLE	25 mg
Cenestin, Enjuvia	TABLET, ORAL	synthetic 0.9 mg, synthetic 1.25 mg
Cenestin, Enjuvia	TABLET, ORAL	synthetic 0.3 mg, synthetic 0.45 mg, synthetic 0.625 mg
Premarin	TABLET, ORAL	0.3 mg, 0.625 mg, 1.25 mg
Premarin	TABLET, ORAL	0.45 mg, 0.9 mg

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CLASS

Comments:

Menest Backorder (June 2023): Menest 0.625 mg tablets are on long term backorder. Premarin 0.625 mg may be dispensed for the duration of the backorder.

Menest permanently discontinued as of late-2025. Utilize Premarin as needed (Pending P&T Review/Update February 2026).

ORDERED FORMULATION

FORMULARY INTERCHANGE

conjugated estrogens (Cenestin, Enjuvia)

synthetic 0.3 mg oral tablet
synthetic 0.625 mg oral tablet
synthetic 1.25 mg oral tablet

esterified estrogens (Menest)

0.3 mg oral tablet
0.625 mg oral tablet
1.25 mg oral tablet

conjugated estrogens (Cenestin, Enjuvia)

synthetic 0.45 mg oral tablet
synthetic 0.9 mg oral tablet

conjugated estrogens (Premarin)

0.45 mg oral tablet
0.9 mg oral tablet

conjugated estrogens (Premarin)

0.3 mg oral tablet
0.625 mg oral tablet
1.25 mg oral tablet

esterified estrogens (Menest)

0.3 mg oral tablet
0.625 mg oral tablet
1.25 mg oral tablet

Reviewed: October 25, 2006

Last updated: Jan. 29, 2026

Black Box Warning: Endometrial cancer; cardiovascular; dementia risk
HAZ-MED: Table 1
Formulary, Not Routinely Stocked: Premarin: 0.9 mg, 1.25 mg

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