Bottom Line Up Front
IVF medications fall into four categories: stimulation drugs (grow follicles), prevention drugs (stop premature ovulation), trigger shots (finalize egg maturation), and luteal support (maintain the uterine lining after transfer). Understanding what each one does — and why — helps you feel informed rather than overwhelmed.
Stimulation Medications: Growing Your Follicles
The foundation of every IVF cycle is gonadotropin therapy — injectable medications that stimulate your ovaries to develop multiple follicles. These are the medications you'll inject daily for 8–14 days.
FSH-Based Medications
Gonal-F (follitropin alfa) and Follistim (follitropin beta) are recombinant FSH — lab-produced versions of the hormone your brain naturally releases to grow follicles. They come in pen-style injectors that are relatively straightforward to use. Most protocols start at 150–300 IU daily, adjusted based on response.
Menopur (menotropins) contains both FSH and LH derived from purified human urine. The addition of LH activity can benefit patients whose follicles need that extra hormonal push — particularly those over 35 or with diminished ovarian reserve. Menopur requires reconstitution (mixing a powder with diluent), which adds an extra step to injection prep.
Injection Tip
Ice the injection site for 30 seconds before injecting to reduce sensation. Inject slowly (10–15 seconds), and rotate sides (left and right of belly button) each day to minimize soreness.
Understanding Dosing
Your stimulation dose is not a reflection of your fertility health — it's a calculation based on your ovarian reserve (AMH, AFC), body weight, and how your ovaries have responded in previous cycles. Higher doses don't always mean better outcomes; sometimes lower, slower stimulation produces higher-quality eggs.
Prevention Medications: Stopping Premature Ovulation
Without intervention, your body would release the growing eggs through natural ovulation before they can be retrieved. GnRH antagonists prevent this.
Cetrotide (cetrorelix) and Ganirelix are subcutaneous injections typically started around stimulation day 5–6, when follicles reach 13–14mm. They block the GnRH receptor, preventing the LH surge that triggers natural ovulation. Side effects are generally minimal — occasional injection site redness.
The Trigger Shot: Finalizing Egg Maturation
The trigger shot is the most time-critical medication in your entire cycle.
| Trigger Type | Medication | Route | When Used |
|---|---|---|---|
| hCG trigger | Ovidrel (recombinant) or Pregnyl (urinary) | Subcutaneous or intramuscular | Standard trigger for most protocols |
| GnRH agonist trigger | Lupron (leuprolide) | Subcutaneous | High OHSS risk patients, donor/freeze-all cycles |
| Dual trigger | Lupron + low-dose hCG | Subcutaneous | Maximizes egg maturity while reducing OHSS risk |
Luteal Support: After Retrieval and Transfer
After retrieval, your natural progesterone production may be insufficient to support early pregnancy. Luteal support fills this gap.
Progesterone in oil (PIO) is the most common form — an intramuscular injection into the upper buttock/hip area. This is the injection most patients find challenging due to the thicker needle and oil-based solution. Warm the vial in your hands or with a heating pad before injecting to reduce viscosity.
Endometrin and Crinone are vaginal progesterone options (suppositories and gel, respectively). Some clinics use these exclusively; others use them alongside PIO. Evidence suggests vaginal and intramuscular routes are similarly effective for most patients.
Estrace (estradiol) is sometimes added to support the endometrial lining during frozen embryo transfer cycles.
Important
Never stop progesterone support without your clinic's instruction — even if you get a positive pregnancy test. Most protocols continue progesterone through 8–12 weeks of pregnancy, at which point the placenta takes over production.
Medication Costs and Savings
IVF medications typically cost $3,000–$7,000 per cycle in the US, depending on dosing. Several strategies can reduce this:
- Specialty pharmacies (Freedom Fertility, MDR, Encompass) often beat retail pricing by 20–40%
- Manufacturer compassion programs (EMD Serono's Compassionate Care for Gonal-F, Ferring's Heart Beat for Menopur)
- International pharmacies (with clinic guidance) — the same medications are often significantly less expensive outside the US
- Clinical trials sometimes cover medication costs
IVF Medications Cost Less Abroad
In Colombia, IVF medications are often included in the cycle cost or available at a fraction of US retail pricing.
Explore Colombian IVF Pricing →Medication Storage and Handling
Most stimulation medications require refrigeration until opened. Once reconstituted (Menopur) or in use (Gonal-F pen), they can typically be stored at room temperature for a limited time. Always check the package insert for specific storage instructions. Never use medication that has changed color, appears cloudy when it shouldn't be, or has passed its expiration date.