Infertility Drug Summary

Last updated: 19 December 2025

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Antigonadotropin


Drug Dosage Remarks
Danazol 200-800 mg PO 24 hourly x 3-6 months Adverse Reactions
  • Dermatologic effects (acne, oily skin, mild hirsutism, hair loss, rash); CNS effects (nervousness, headache, vertigo, emotional lability, backache, skeletal muscle spasm); Other effects (flushing, breast size reduction, voice changes, nausea, weight gain)
Special Instructions
  • Use with caution in patients with cardiac, renal or hepatic dysfunction, epilepsy, migraine
  • Avoid use in pregnant or breastfeeding patients, patients with undiagnosed abnormal genital bleeding or marked hepatic impairment 

Anti-Gonadotropin-Releasing Hormones


Drug Dosage Remarks
Cetrorelix For controlled ovarian stimulation in conjunction with gonadotropins:
3 mg SC given on stimulation day 7 (when serum estradiol level shows appropriate stimulation response) 
If hCG is not administered within 4 days after injection, continue 0.25 mg at 96-hour intervals until hCG is administered or
0.25 mg SC on day 5 or morning of day 6 and continued daily until hCG is administered
Adverse Reactions
  • CNS effect (headache); Hormonal effect (OHSS); GI effect (nausea); Hepatic effect (increase in liver enzyme); Other effects (anaphylactic reactions, local injection site reactions)
Special Instructions
  • Avoid use in pregnant or breastfeeding patients, patients with moderate to severe renal and hepatic impairment or severe allergic conditions
  • Use with caution in patients with active allergic conditions or history of allergies
  • Injection site should be at the lower abdomen, preferably around the navel 
Ganirelix
(Synthetic decapeptide 
ganirelix) 
For controlled ovarian hyperstimulation in conjunction with gonadotropins:
0.25 mg SC 24 hourly starting on day 5 or day 6 of FSH or Corifollitropin alfa administration 
Controlled ovarian hyperstimulation with FSH or Corifollitropin alfa may start at day 2 or 3 of menses 
Adverse Reactions
  • GI effects (nausea, abdominal distension); Obstetric effects (pelvic pain, OHSS, ectopic pregnancy, miscarriage); Other effects (local injection site reactions, headache) 
Special Instructions
  • Avoid use in pregnant patients, patients with severe renal or hepatic impairment or hypersensitivity to GnRH or any GnRH analogues
  • Use with caution in patients with OHSS, women weighing <50 kg or >90 kg 
  • Early ultrasound confirmation that pregnancy is intrauterine is important

Dopamine Receptor Agonists


Drug Dosage Remarks
Bromocriptine Initial dose: 1.25-2.5 mg PO 8-12 hourly or 24 hourly at bedtime 
Increase dose slowly in increments of 1.25-2.5 mg/day every 2-3 days
Maintenance dose: 2.5-15 mg/day PO in divided doses
Max dose: 30 mg/day
Adverse Reactions
  • Usually dose related; GI effects (nausea/vomiting); CNS effects (dizziness, headache, syncope, headache, seizures, psychosis, hallucinations, delusions, confusion); CV effects (orthostatic hypotension that may occur at the beginning of treatment, digital vasospasm, leg cramps, prolonged hypotension, arrhythmia, chest pain, pericarditis and pericardial effusions, very rarely hypertension, Ml, stroke); Other effects (retroperitoneal fibrosis, pleural thickening and effusions, nasal congestion, dry mouth) 
  • Studies have shown that Cabergoline may be better tolerated than Bromocriptine
Special Instructions
  • Take with food to minimize nausea
  • Use with caution in patients with CV disease, psychiatric disorders and in postpartum women with history of hypertensive disorders
Cabergoline Initial dose: 0.5 mg PO once weekly or 0.25 mg PO 2x/week 
May increase dose slowly in increments of 0.5 mg/week at monthly intervals
Maintenance dose: 0.25-0.5 mg PO 1-2x/week 
Max dose: 4.5 mg/week 
Doses over 1 mg should be given in divided doses

Estrogens


Drug Dosage Remarks
Estradiol  1-2 mg PO 24 hourly cyclically or 
As valerate: 10-20 mg IM 4 weekly or
1 patch applied 1-2 weekly 
Adverse Reactions
  • Gynecological effects (breast, endometrial and ovarian cancers, endometrial hyperplasia, breakthrough bleeding and spotting); Metabolic effects (increased thyroid binding globulin levels); CV effects (stroke, MI, pulmonary embolism, hypertension, deep venous thromboembolism [DVT]); Other effect (dementia) 
Special Instructions
  • Patch: Applied on a clean, dry area of skin of the upper buttock or lower abdomen 
  • Avoid use in patients with history or current breast cancer, CV disorders, untreated endometrial hyperplasia, estrogen-dependent tumors, undiagnosed vaginal bleeding, thrombophilic disorders, migraine 
  • Use with caution in patients with history of endometrial hyperplasia, risk factors for CV disorders, cholestatic jaundice; systemic lupus erythematosus, hepatic hemangiomas, epilepsy, asthma 
Estriol
0.5-1 mg PO 24 hourly on days 6-15 of menstrual cycle
Adverse Reactions
  • GI effects (nausea/vomiting, abdominal cramps, bloating, diarrhea, appetite/weight changes); Hormonal effects (breast tenderness, breast enlargement, libido changes); Metabolic effects (glucose intolerance, hypocalcemia, increased serum triglycerides); CV effects (edema, hypertension, venous thromboembolism [VTE]); CNS effects (headache, irritability, mental depression, nervousness); Other effect (anaphylactic reactions)  
Special Instructions
  • Avoid use in patients with known or suspected estrogen-dependent tumors, undiagnosed vaginal bleeding, thrombosis
  • Use with caution in patients with CV disease, epilepsy, migraine, severe liver disorders, with history of hypertensive disorders, breast cancer, endometrial carcinoma 

Gonadotropins


Drug Dosage Remarks
Choriogonadotropin alfa For ovulation induction and ART: 250 mcg SC given 1-2 days after the last dose of follicle-stimulating agent or hMG 
Adverse Reactions
  • CNS effect (headache); Dermatologic effects (acne, rash); Hormonal effects (ovarian hyperstimulation, uterine bleeding); GI effects (abdominal discomfort, nausea); Local effect (injection site reaction)
    • Thromboembolic events have been reported in association with or separate from OHSS
    • Atelectasis, asthma exacerbation, acute respiratory distress syndrome have been reported after Follitropin alfa, beta and delta, Menotropin, or Urofollitropin’s use
Special Instructions
  • Avoid use in pregnant patients, patients with high FSH level indicating primary gonadal failure, uncontrolled non-gonadal endocrinopathies, abnormal vaginal bleeding of unknown origin, ovarian cysts or enlargement, or in patients with ovary, breast, uterus, hypothalamus or pituitary gland tumors
  • Lutropin alfa or Menotropin should be used with caution in patients with hepatic or renal impairment
  • Advise patient on the possibility of multiple births
Chorionic gonadotropin  For ovulation induction or preparation of follicles for puncture: 1 injection of 5,000-10,000 IU IM to complete treatment with an FSH-containing preparation 
For luteal phase support: 1,000-5,000 IU IM on the third, sixth and ninth day following ovulation 
Corifollitropin alfa  Stimulation Day 1: 
Women ≤60 kg or ≤36 years old: 100 mcg SC single dose during the early follicular phase of the menstrual cycle 
Women >60 kg or >36 years old: 150 mcg SC single dose during the early follicular phase of the menstrual cycle 
Stimulation Day 5-6: GnRH antagonist should be started depending on ovarian response 
Stimulation Day 8: May continue with daily injection of FSH until criteria for triggering oocyte maturation have been reached; may administer hCG 5,000-10,000 IU as soon as 3 follicles ≥17 mm are observed to induce final oocyte maturation  
Follitropin
(Recombinant human FSH)
For controlled ovarian stimulation for multiple follicular development prior to ART: 150-300 IU SC/IM 24 hourly starting on days 2-5 of the menstrual cycle 
Follitropin alfa1  For ovulation induction: 75-150 IU SC/IM 24 hourly
May increase dose by 37.5 IU
(up to 75 IU) at 7- or 14-day intervals until adequate response is achieved 
Max dose: 225 IU/day 
Once adequate response is achieved, administer hCG 5,000-10,000 IU 1-2 days after FSH injection
For controlled ovarian stimulation prior to ART: 150-225 IU SC/IM 24 hourly starting on day 2 or 3 of the menstrual cycle 
May adjust dose based on response 
Max dose: 450 IU/day
Administer single dose of hCG 5,000-10,000 IU 1-2 days after the last FSH injection to induce final follicular maturation  
Follitropin beta  For ovulation induction: 
50 IU/day SC/slow IM for 7-14 days 
For controlled ovarian stimulation prior to ART: 100-225 IU/day SC/IM for 4 days, then adjusted individually based on ovarian response
Maintenance dose: 75-375 IU SC/IM for 6-12 days 
Max dose: 450 IU/day 
Follitropin delta  Individualized dose based on AMH  and body weight
Serum AMH* 
<15 pmol/L (<2.03 ng/mL):

12 mcg SC 24 hourly
15-16 pmol/L (2.03-2.3 ng/mL): 0.19 mcg/kg SC 24 hourly 
17 pmol/L (2.31-2.44 ng/mL): 0.18 mcg/kg SC 24 hourly
18 pmol/L (2.45-2.58 ng/mL): 0.17 mcg/kg SC 24 hourly 
19-20 pmol/L (2.59-2.86 ng/mL): 0.16 mcg/kg SC 24 hourly
21-22 pmol/L (2.87-3.14 ng/mL): 0.15 mcg/kg SC 24 hourly 
23-24 pmol/L (3.15-3.42 ng/mL): 0.14 mcg/kg SC 24 hourly
25-27 pmol/L (3.43-3.84 ng/mL): 0.13 mcg/kg SC 24 hourly 
28-32 pmol/L (3.85-4.54 ng/mL): 0.12 mcg/kg SC 24 hourly
33-39 pmol/L (4.55-5.52 ng/mL): 0.11 mcg/kg SC 24 hourly 
≥40 pmol/L (≥5.53 ng/mL):
0.1 mcg/kg SC 24 hourly
Max dose: 12 mcg SC 24 hourly for first treatment cycle
*According to the calibration based on activity assay, 1 mcg of Follitropin delta = 15 IU of Follitropin alfa
Doses to be initiated 2-3 days after menstruation and continued until adequate follicular development has been achieved (≥3 17 mm follicles are observed) 
Once adequate response is achieved, administer a single dose of rhCG 250 mg or hCG 5,000 IU  
Lutropin alfa1 
(Recombinant human LH)  
For ovulation induction: 
75 IU/day SC with 75-150 IU FSH  May increase FSH if required by 37.5-75 IU increments at 7- to 14-day intervals
Duration of stimulation in any one cycle may be extended up to 5 weeks until adequate response is achieved 
Once optimal response is obtained, administer hCG 5,000-10,000 IU 1-2 days after LH and FSH injection to induce ovulation 
Menotrophin
(Highly-purified human menopausal 
gonadotrophin, HP-hMG, Menotropin)
For ovulation induction:
75 IU FSH/75 IU LH - 150 IU FSH/150 IU LH SC/IM 24 hourly 
May adjust dose gradually until adequate response is achieved 
Max dose: 225 IU/day 
To induce ovulation, administer hCG 5,000-10,000 IU IM 1-2 days after the last dose of hMG injection
For controlled ovarian stimulation prior to ART:
75 IU FSH/75 IU LH - 300 IU FSH/300 IU LH SC/IM 24 hourly starting on day 2-3 of menstrual cycle
Max dose: 450 IU/day 
Max duration: 20 days
Continue until adequate response is achieved 1-2 days after adequate response, inject 10,000 IU of hCG and oocyte retrieval is performed 32-36 hours later  
Urofollitropin For ovulation induction: 
75-150 IU/day IM/SC x 7-12 days followed by hCG 
Max dose: 225 IU/day 
For controlled ovarian stimulation prior to ART: 150-225 IU SC 24 hourly during first 5 days of treatment 
Max dose: 450 IU/day 
Once an optimal response is obtained, inject 10,000 IU of hCG for follicular maturation for oocyte retrieval 
1Combination of Follitropin alfa and Lutropin alfa is available. Please see the latest MIMS for the specific formulations and prescribing information.

Gonadotropin Releasing Hormone Analogues


Drug Dosage Remarks
Goserelin
(Goserelin acetate)
3.6 mg depot injection SC to down-regulate pituitary gland every 28 days Adverse Reactions
  • Hypoestrogenism that manifests as transient vaginal bleeding, hot flushes, vaginal dryness, decreased libido, breast tenderness, insomnia, depression, irritability, fatigue, decreased elasticity of the skin, headache, osteoporosis after several weeks of treatment; GI effects (nausea, abdominal discomfort); Other effects (reduction in glucose tolerance, changes in serum lipids and hepatic effects, hypersensitivity reactions) 
Special Instructions
  • Addback strategy with Estrogen/Progesterone can eliminate most of these side effects
  • Monitor bone density during long-term treatment 
Triptorelin 0.1 mg SC 24 hourly from the second day of menstrual cycle 
ART: 0.5 mg SC for 7-10 days followed by 0.1 mg SC 24 hourly or 
3.75 mg SC/IM as single dose on cycle day 2 or 3 (follicular phase) or day 22 (luteal phase) 
Gonadotropin should be started after desensitization of the pituitary, generally about 15 days after injection 

Progestogens (Systemic)


Drug Dosage Remarks
Dydrogesterone 10 mg PO 24 hourly from day 14-25 of cycle 
Treatment should be maintained for at least 6 consecutive cycles 
Adverse Reactions
  • GI effects (GI disturbances, change in weight/appetite); Breast changes (enlargement, secretion, discomfort); Androgenic effects (acne, mental depression, changes in libido, hair loss, hirsutism, irregular menstrual bleeding); Other effects (fluid retention, edema, fatigue, alterations in lipid profile) 
Special Instructions
  • Should not be used if woman is pregnant, experiencing unexplained vaginal bleeding or known or suspected to have breast cancer
  • Use with caution in women with CV or renal impairment, DM, asthma, epilepsy, migraine, depression, pruritus related to cholestasis, VTE and in patients with other conditions that may be aggravated by edema or hepatic impairment 
Hydroxyprogesterone 
(Hydroxyprogesterone 
caproate) 
250 mg IM about 3 days after the rise in basal body temperature
Progesterone 200-300 mg PO divided 12-24 hourly 
May increase up to 600 mg/day PO divided 8 hourly 

Progestogen (Vaginal)


Drug Available Strength Dosage Remarks
Progesterone
8% vaginal gel  1 application 24 hourly starting after documented ovulation or arbitrarily on day 18-21 of cycle 
When used during IVF, daily application should be continued for 1 month if there is laboratory evidence of pregnancy 
Recommended duration of therapy: 12 cycles 
Adverse Reactions
  • GI effects (constipation, diarrhea, nausea/vomiting, abdominal pain, change in weight/appetite); GU effects (perineal pain, nocturia); Breast changes (enlargement, pain); CNS effects (somnolence, headache, nervousness, depression); Androgenic effects (acne, mental depression, changes in libido, hair loss, hirsutism, irregular menstrual bleeding); Other effect (arthralgia)
Special Instructions
  • Vaginal tab: Insert applicator into the vagina in a sitting or lying position
  • Should not be used if woman is pregnant, experiencing unexplained vaginal bleeding or known or suspected to have breast cancer
  • Use with caution in women with CV or renal impairment, DM, asthma, epilepsy, migraine, depression, pruritus related to cholestasis, VTE and in patients with other conditions that may be aggravated by edema or hepatic impairment 
400 mg pessary For luteal phase support:
400 mg inserted vaginally or rectally 12-24 hourly 
Start at oocyte retrieval and continue for 38 days for confirmed pregnancy
100 mg vaginal tab, cap
200 mg vaginal cap 
1 tab/cap inserted vaginally 12 hourly to be started within several days of ovulation 
May increase in weekly increments of 100 mg/day 
Max dose: 600 mg/day spread over 3 doses 

Selective Estrogen Receptor Modulators


Drug Dosage Remarks
Clomifene 
(Clomifene citrate, 
Clomiphene)
First course: 50 mg PO 24 hourly x 5 days starting on or about the fifth day of the menstrual cycle or at any time if there is amenorrhea 
If ovulation does not occur: 
Second course: 
100 mg PO 24 hourly x 5 days 
May be given starting 30 days after the previous course 
If ovulatory menses do not occur, the dose may be repeated for 2 additional cycles 
Max duration: 6 cycles
Adverse Reactions
  • Incidence and severity tend to be dose dependent: Ovarian effects (reversible enlargement, cyst formation, OHSS); Hormonal effects (vasomotor flushes, breast tenderness, abnormal uterine bleeding, endometriosis, weight gain); GI effects (abdominal pain, bloating); CNS effects (convulsions, dizziness, lightheadedness, headache, nervous tension, fatigue, vertigo, insomnia, depression); Visual effects (transient visual disturbances eg after-images blurring; rarely cataracts and optic neuritis); Other effects (rarely allergic reactions and reversible hair loss)
  • Increased risk of multiple births though rarely more than twins, ectopic pregnancy
Special Instructions
  • Contraindicated in patients with liver disease, undiagnosed abnormal uterine bleeding, hormone-dependent tumors, and patients with pre-existing mental depression or thrombophlebitis
  • Patients should be properly informed of the possibility of multiple pregnancy 
  • Monitor for abdominal and pelvic pain which may be a sign of enlarged ovarian cyst
  • Discontinue use if visual disturbances develop
Tamoxifen First course: 10 mg PO 12 hourly or
20 mg PO 24 hourly x 4 days on days 2-5 of the menstrual cycle 
May be increased to 40 mg/day then 
80 mg/day for subsequent courses if ovulation does not occur 
For irregular cycles: Start first course on any day with subsequent course starting 45 days later or 
On day 2 of cycle if menstruation occurs 
Adverse Reactions
  • Hormonal effects (hot flushes, fluid retention, vaginal bleeding and discharge, suppression of menses in some premenopausal women, pruritus vulvae); Hematologic effects (increased tendency for thromboembolism and pulmonary embolism, transient decreased platelet, leukopenia); CNS effects (headache, lightheadedness, depression, confusion, fatigue); GI effects (nausea/vomiting, GI discomfort, elevated liver enzymes); Visual effects (blurred vision, rarely corneal changes, cataracts, retinopathy); Dermatologic effects (dry skin, rashes, vasculitis); Metabolic effect (hypertriglyceridemia); Rarely severe allergic reactions
Special Instructions
  • Avoid in women with history of thromboembolic events
  • Should be stopped at least 6 weeks before surgery and before any long-term immobility and started only once fully mobile

Disclaimer

All dosage recommendations are for non-elderly adults with normal renal and hepatic function unless otherwise stated. 
Not all products are available or approved for above use in all countries. 
Products listed in the Drug Summary are based on indications stated in the locally approved product monographs. 
Please refer to local product monographs in Related MIMS Drugs for country-specific prescribing information. 

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