drugs given yo control bleeding in Abnormal uterine bleeding
I'll check the medical library skill first before answering this clinical question.
Reading File
Now let me search the medical library for drugs used in abnormal uterine bleeding, running parallel queries for comprehensive coverage.
Finding Sources
Finding Sources
Searching PubMed
"abnormal uterine bleeding"[MeSH Terms] AND "drug therapy"[MeSH Terms]
Good results. Now let me read the most relevant sections - Berek & Novak's Gynecology, Rosen's Emergency Medicine pharmacologic table, and Bailey & Love's Surgery in parallel.
Reading File
Reading File
Reading File
Excellent - I have very detailed pharmacologic information. Let me also read the Goldman-Cecil Medicine section and get more detail from Bailey & Love on medical management.
Reading File
Reading File
Let me get the Goldman-Cecil treatment section which was cut off, and also get more detail from Rosen's for the full pharmacologic section.
Reading File
Finding Sources
I now have comprehensive information from multiple authoritative textbooks. Here is a complete answer:
Drugs Used to Control Bleeding in Abnormal Uterine Bleeding (AUB)
AUB management depends on whether the bleeding is anovulatory (estrogen-breakthrough, common in PCOS, perimenarchal, perimenopausal) or ovulatory (structural/hormonal). Below is a systematic drug-class overview drawn from Rosen's Emergency Medicine, Goldman-Cecil Medicine, Berek & Novak's Gynecology, and Bailey & Love's Surgery.
1. Hormonal Agents
A. Combined Oral Contraceptive Pills (COCPs)
The most widely used first-line treatment for both acute and chronic AUB.
- Dose (acute bleeding): Monophasic pill containing <35 µg ethinyl estradiol
- 1 pill three times daily for 7 days, OR
- 1 pill twice daily for 5 days, then once daily until the pack is finished
- Mechanism: Progestin component stabilizes the endometrium; estrogen stops bleeding rapidly
- Chronic prevention: Cyclic OCP use after acute episode prevents recurrence
- Contraindications: Women <35 years who smoke; history of DVT/PE, breast cancer, liver disease, ischemic heart disease, uncontrolled hypertension, pregnancy
B. Progestin-Only Therapy
Used when estrogen is contraindicated, or for anovulatory bleeding.
| Drug | Dose | Notes |
|---|---|---|
| Medroxyprogesterone acetate (MPA) | 5-10 mg PO daily for 10 days (chronic) or 20 mg three times daily for 7 days (acute) | Induces endometrial shedding on withdrawal |
| Norethindrone | 5 mg daily | Alternative to MPA for cyclic therapy |
- Withdrawal bleeding occurs after stopping; patient then transitions to cyclic hormonal therapy
- Contraindications: Active/past DVT/PE, liver disease, breast cancer
C. Conjugated Equine Estrogens (CEE) - IV
Used for acute, profuse anovulatory bleeding to stop bleeding rapidly.
- Dose: 25 mg IV every 4-6 hours until bleeding stops (up to 24 hours; max ~3 doses)
- Mechanism: Promotes endometrial hemostasis and stabilizes fragile endometrial vessels
- Always follow with progestin (MPA 5-10 mg) started simultaneously to stabilize the endometrium
- After bleeding stops, transition to cyclic OCP for at least 3 cycles
- Contraindications: Active/past thromboembolic disease, breast cancer, liver disease
D. Levonorgestrel-Releasing IUD (LNG-IUD, e.g., Mirena)
Highly effective for ovulatory AUB and heavy menstrual bleeding (menorrhagia).
- Releases 20 µg levonorgestrel/day locally into the uterine cavity
- Markedly reduces menstrual blood loss (up to 90%) over time
- Also effective for dysmenorrhea
- Preferred long-term option when contraception is also desired
2. Antifibrinolytic Agents
Tranexamic Acid
- Dose: 1.3 g PO every 6-8 hours for up to 5 days (or 650 mg x2-3 doses)
- Mechanism: Inhibits plasminogen activators, preventing fibrin clot dissolution in endometrial vessels - reduces blood loss by ~50%
- Used specifically for ovulatory AUB / heavy menstrual bleeding
- Contraindications: Current or past thromboembolic disease, acquired impaired color vision
- Important: Do NOT combine with combined oral contraceptive pills (additive thrombotic risk)
3. NSAIDs (Non-Steroidal Anti-Inflammatory Drugs)
Useful for ovulatory AUB - reduce prostaglandin-mediated vasodilation and blood loss by 20-50%.
| Drug | Dose | Duration |
|---|---|---|
| Ibuprofen | 200-400 mg three or four times daily | 5 days |
| Mefenamic acid | 500 mg three times daily | 4-5 days or until bleeding stops |
| Naproxen | 500 mg initially, then 250 mg three or four times daily | 5 days |
- Best started at the onset of bleeding or just before
- Contraindications: Advanced renal disease; use with caution in GI ulcer history or bleeding disorders
4. GnRH Agonists / Antagonists (for AUB due to Fibroids)
For women with AUB caused by uterine fibroids (leiomyomas):
- Elagolix 300 mg twice daily - GnRH antagonist, oral
- Relugolix 40 mg daily - GnRH antagonist (also combined with estradiol/norethindrone as Myfembree)
- Create a hypoestrogenic state, reducing fibroid size and associated bleeding
- Used as a bridge to surgery or as standalone medical management
Summary by Clinical Scenario
| Scenario | First-Line Drug(s) |
|---|---|
| Acute profuse anovulatory bleeding | IV Conjugated estrogens + progestin, then OCP |
| Anovulatory AUB (chronic) | Combined OCP or cyclic progestin (MPA/norethindrone) |
| Ovulatory AUB / heavy menstrual bleeding | NSAIDs + tranexamic acid; LNG-IUD long-term |
| AUB due to uterine fibroids | GnRH antagonists (elagolix, relugolix) |
| Anovulatory bleeding (PCOS) | OCP or cyclic progestin |
| Adolescent anovulatory bleeding | OCP (low-dose) |
Key points:
- Exclude pregnancy and coagulopathy (von Willebrand disease) before initiating medical therapy - Goldman-Cecil Medicine
- Anovulatory bleeding (75% of AUB cases) is mostly due to unopposed estrogen stimulating the endometrium - Goldman-Cecil Medicine
- Dilation and curettage is NOT an effective long-term treatment for AUB - Berek & Novak's Gynecology
- Hysterectomy is reserved for failure of all medical therapies - Berek & Novak's Gynecology, p. 1411
- Endometrial ablation is increasingly used but is not 100% effective; medical management remains first line - Goldman-Cecil Medicine
Sources: Rosen's Emergency Medicine (Table 30.1), Goldman-Cecil Medicine, Berek & Novak's Gynecology, Bailey & Love's Surgery 28th Ed.
This is a shared conversation. Sign in to Orris to start your own chat.