For many people – whether in a heterosexual relationship, a same‑sex partnership, or building a family on their own – the moment you begin researching IVF, you encounter a wall of unfamiliar medication names, injection schedules, and clinical terminology. It can feel overwhelming, especially when you are already carrying so much emotionally.
That anxiety is completely normal. And it’s exactly why we built this guide: to replace confusion with clarity, and fear with a plan.
Below you’ll find a clear, complete, and calming overview of the medications used throughout an IVF cycle – what each one does, how it’s given, what side effects to expect, typical costs, and how California’s SB 729 insurance law may help.
At Coastal Fertility Medical Center (CFMC) in Irvine, we’re here to answer any questions specific to your protocol and your situation.
An IVF cycle requires your body to do something it would never do naturally – produce multiple mature eggs at once, on a schedule your medical team controls. A carefully sequenced set of medications makes this possible.
As Dr. David Harari, MD, Reproductive Endocrinologist at CFMC, explains:
The medications in IVF stimulation are very important. Generally, it starts with a pretreatment protocol, which is usually a birth control pill for about three weeks. Then we move on to several other categories of medications – GnRH analogs or antagonists, gonadotropins, HCG as a trigger shot, estrogen, and progesterone.
Each category serves a different purpose:
The sections below explain each phase in detail.
Before we dive into the phases, here is a complete medication reference table. Don’t let the length intimidate you – most patients only use a subset of these medications, and your Coastal Fertility physician will provide a personalized protocol built specifically for you.
Mobile Users: Swipe left to view the full table. Don’t worry about memorizing every name — your care team will guide you.
| Brand Name | Generic Name | Category | How Given | Primary Purpose |
|---|---|---|---|---|
| Birth control pill (various) | Ethinyl estradiol / progestin | Pre-cycle priming | Oral | Suppress natural cycle; coordinate follicle development |
| Gonal-F | Follitropin alfa | Gonadotropin (FSH) | Subcutaneous injection | Stimulate follicle growth |
| Follistim AQ | Follitropin beta | Gonadotropin (FSH) | Subcutaneous injection | Stimulate follicle growth |
| Menopur | Menotropins (FSH + LH) | Gonadotropin (FSH/LH) | Subcutaneous injection | Stimulate follicle growth and support maturation |
| Repronex | Menotropins (FSH + LH) | Gonadotropin (FSH/LH) | Subcutaneous or intramuscular | Stimulate follicle growth |
| Cetrotide | Cetrorelix | GnRH antagonist | Subcutaneous injection | Prevent premature ovulation |
| Ganirelix | Ganirelix | GnRH antagonist | Subcutaneous injection | Prevent premature ovulation |
| Lupron | Leuprolide acetate | GnRH agonist | Subcutaneous injection | Downregulation or trigger (OHSS reduction) |
| Synarel | Nafarelin | GnRH agonist | Nasal spray | Downregulation |
| Ovidrel | Choriogonadotropin alfa | hCG trigger | Subcutaneous injection | Final egg maturation |
| Pregnyl / Novarel | hCG | hCG trigger | Intramuscular injection | Final egg maturation |
| Crinone | Progesterone | Luteal support | Vaginal gel | Support uterine lining |
| Endometrin | Progesterone | Luteal support | Vaginal insert | Support uterine lining |
| Prometrium | Progesterone | Luteal support | Oral or vaginal capsule | Support uterine lining |
| Progesterone in Oil | Progesterone | Luteal support | Intramuscular injection | Support uterine lining |
| Estrace | Estradiol | Estrogen support | Oral or vaginal | Thicken uterine lining |
| Vivelle-Dot | Estradiol | Estrogen support | Transdermal patch | Thicken uterine lining |
Most IVF protocols begin with oral contraceptive pills taken for approximately two to three weeks before ovarian stimulation begins.
At first glance, this can seem confusing:
Why would you take birth control when trying to become pregnant?
Dr Harari says the answer is control and synchronization.
The purpose of the oral contraceptives initially is to turn off the ovarian function so that when we take over artificially with our stimulation hormones… we can have you produce multiple eggs at one time.
By suppressing your natural cycle temporarily, birth control pills allow your care team to synchronize follicle development across both ovaries. This coordinated start improves the chances of retrieving multiple mature eggs.
Most patients tolerate this phase well because it is relatively short.
Once suppression is complete, stimulation begins.
This is the phase most patients associate with IVF injections.
Gonadotropins are injectable hormones that tell the ovaries to grow multiple follicles simultaneously. Each follicle contains one potential egg.
According to Dr. Harari, you will have regular monitoring appointments to ensure your ovaries are responding safely and appropriately during this phase.
When you embark on the IVF stimulation protocol cycle, you will be spending several visits with us about every two or three days, at which time we will be measuring very important blood parameters like serum estradiol, and in addition we’ll be doing ultrasound evaluation of how those follicles are developing.
Most patients learn to self-inject after a short training session with a Coastal Fertility nurse.
Think of these medications as the IVF cycle’s traffic-control system.
Their job is to prevent your body from ovulating too early, before the eggs can be retrieved.
There are two major categories of GnRH medications. They sound similar but work differently, and your doctor chooses the one that best fits your ovarian response profile.
Examples: Cetrotide, Ganirelix
GnRH antagonists work immediately. They are usually added around days 5–6 of stimulation and continue until the trigger shot.
This is now the most common IVF protocol because:
Examples: Lupron, Synarel
GnRH agonists work through a longer process called downregulation. They are started earlier and temporarily suppress hormone signaling before stimulation begins.
These protocols are sometimes used for:
When your follicles reach the correct size – typically around 18–20 mm – you will take a trigger shot.
This is one of the most time-sensitive parts of the IVF cycle.
The trigger shot is administered exactly 36 hours before egg retrieval and prompts the eggs to complete their final maturation.
For patients at elevated risk of OHSS, your physician may instead use:
Timing is critical.
Set multiple alarms and double-check your instructions carefully. If you miss your trigger timing, contact your clinic immediately.
After egg retrieval, your body needs additional hormonal support to prepare the uterine lining for implantation.
This phase is called luteal support.
Some patients – particularly those undergoing frozen embryo transfer (FET) cycles – also require estrogen support.
Common options include:
Progesterone support often continues until 8–10 weeks of pregnancy, when the placenta begins producing sufficient hormones independently.
Some IVF protocols also include additional medications designed to optimize implantation or reduce complications.
Learning to self-inject can feel intimidating at first, but most patients become comfortable surprisingly quickly.
It is completely normal to feel nervous before your first injection. Our nurses provide one-on-one training before your cycle begins, and you can always contact our after-hours line with questions.
Most IVF medication side effects are mild and temporary.
The chart below explains what is common, what is manageable at home, and when to contact your clinic.
| Side Effect | How Common | What to Do |
|---|---|---|
| Bloating, breast tenderness, fatigue | Very common | Rest, hydrate, wear supportive clothing |
| Headaches, mood swings | Common | Tylenol may help; avoid ibuprofen unless instructed otherwise |
| Injection-site redness or bruising | Very common | Ice before injection; rotate sites |
| Mild OHSS (bloating, nausea) | 10–15% of cycles | Monitor symptoms and stay hydrated |
| Severe OHSS (rapid weight gain, vomiting, shortness of breath) | Less than 1–2% with modern protocols | Contact your doctor immediately |
Ovarian hyperstimulation syndrome (OHSS) occurs when the ovaries respond too strongly to stimulation medications.
Mild OHSS is relatively common and usually resolves on its own.
More severe OHSS can involve:
Your CFMC team monitors estradiol levels and follicle growth carefully throughout stimulation to minimize this risk.
Medications are typically the highest variable cost in an IVF cycle and are usually billed separately from the IVF procedure itself.
The final amount varies widely based on:
Many patients pay significantly less than the upper end of the range, especially when insurance coverage or pharmacy discounts apply.
The table below reflects general U.S. market pricing ranges — not Coastal Fertility’s specific self-pay pricing. For current Coastal Fertility pricing and package options, call (949) 726-0600.
| Medication | Approximate Self-Pay Cost (U.S. Market) |
|---|---|
| Gonadotropins (Gonal-F, Follistim, Menopur) | $1,500–$4,000 |
| GnRH antagonist (Cetrotide, Ganirelix) | $300–$800 |
| Lupron (GnRH agonist) | $200–$500 |
| Trigger shot (Ovidrel, Pregnyl) | $75–$200 |
| Progesterone in Oil | $100–$300 |
| Vaginal progesterone (Crinone, Endometrin) | $300–$700 |
| Estrogen (Estrace, Vivelle-Dot) | $50–$200 |
| Birth control pills (pre-cycle) | $20–$80 |
For additional strategies, read our guide on reducing fertility treatment medication costs.
California SB 729 – effective January 1, 2026 – significantly expanded fertility coverage requirements for many fully-insured large-group health plans.
Under the law, many plans covering employers with 101+ employees must now provide IVF coverage.
Importantly, the law is inclusive of:
Coverage does not require proof of a traditional infertility diagnosis.
That depends on your plan’s pharmacy benefit.
Some plans cover fertility medications under:
Always verify specifics directly with your insurer.
Our CFMC financial coordinators can help verify your benefits and estimate potential out-of-pocket costs.
📞 Call us: (949) 726-0600
Every IVF protocol is personalized, but a standard antagonist protocol often follows this general structure:
The medication phase of IVF can feel like a lot to absorb at first.
But understanding what each medication does – and why your protocol is structured the way it is – often helps patients feel calmer, more informed, and more in control.
At CFMC, every protocol is personalized around your history, your goals, and the family you are trying to build.
Whether this is your first IVF cycle or you are coming to us after a difficult experience elsewhere, our team brings the same level of expertise, attention, and compassion to every patient.
Chief Strategy Officer Julianna Nikolic leads strategic initiatives, focusing on growth, innovation, and patient-centered solutions in the reproductive sciences sector. With 26+ years of management experience and a strong entrepreneurial background, she brings deep expertise to advancing reproductive healthcare.
Chief Strategy Officer Julianna Nikolic leads strategic initiatives, focusing on growth, innovation, and patient-centered solutions in the reproductive sciences sector. With 26+ years of management experience and a strong entrepreneurial background, she brings deep expertise to advancing reproductive healthcare.
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