Gonal-F in IVF: Dosage, Cost, Side Effects & AMH-Based Dosing

Gonal-F (generic name follitropin alfa) is a lab-made copy of follicle-stimulating hormone (FSH), the hormone your pituitary gland uses to recruit and grow egg-containing follicles. In IVF it is injected under the skin to make the ovaries develop multiple mature eggs in one cycle, with a typical starting dose of 150 IU per day — and a full 14-day stimulation course usually costs $1,500–$4,000 at US retail pharmacies before insurance or manufacturer assistance.

Data in this guide comes from the FDA-approved Gonal-F prescribing information on DailyMed (NIH), GoodRx pharmacy pricing, and peer-reviewed literature indexed in PubMed. It was compiled by the ProIVF Medical Editorial Team and reviewed by the ProIVF Medical Advisory Board.

What Is Gonal-F and What Does It Do in IVF?

Gonal-F is the brand name for follitropin alfa, a recombinant human FSH made by EMD Serono (Merck Group) and approved by the US FDA in 1997 — one of the most widely used gonadotropins in the world. In plain terms it does three things:

1. Stimulates follicle growth — it signals the ovaries directly to recruit and mature follicles, each containing one egg.
2. Supports multiple follicles at once — a natural cycle grows one dominant follicle; IVF needs several, and Gonal-F pushes the ovaries to produce them.
3. Works for women and men — women use it for ovulation induction and ART stimulation; men with hypogonadotropic hypogonadism use it alongside hCG to induce sperm production.

Because it replaces the FSH your body would make itself, Gonal-F is called an “exogenous” gonadotropin. For where it fits among every drug in a cycle, see our IVF medications guide and injection guide.

“Gonal-F therapy should be initiated under the supervision of a physician who is experienced in the management of infertility.” — Gonal-F (follitropin alfa) US Prescribing Information, DailyMed / NIH, accessed 2026

Where Gonal-F Fits in an IVF Protocol

Gonal-F runs the stimulation phase of an IVF cycle, typically 8–14 days. Here is the full timeline it occupies:

The same drug appears in several protocol styles. Antagonist protocols add a GnRH antagonist (cetrorelix or ganirelix) mid-cycle to block premature ovulation. Agonist (long Lupron) protocols down-regulate the pituitary first, temporarily switching off its own FSH and LH. Minimal or natural modified cycles use lower doses to grow fewer follicles.

Gonal-F alone or combined with an LH-containing drug?

The choice depends mainly on your ovarian response profile:

• Normal responders are usually stimulated with FSH alone.
• Poor responders and older patients sometimes benefit from adding an LH source — Menopur, which carries both FSH and LH, or recombinant LH — to support estrogen production and follicle quality.
• PCOS / high responders are kept on low FSH doses to reduce OHSS risk.

Your clinic decides based on blood tests (AMH, FSH, estradiol), antral follicle count, age, and cycle history. The stimulation phase ends with the trigger shot, explained in our dedicated guide.

Gonal-F Dosage: What Determines Your Dose?

The most common patient question is “what dose will I be on?” — and the honest answer is that your dose is set by your ovarian reserve and very likely adjusted mid-cycle.

FDA-approved dosing — US prescribing information

For ART (IVF) cycles, the US label specifies:

• Starting dose: 150 IU per day, injected under the skin
• Adjustments: after 3–5 days, in steps of 75–150 IU based on response
• Maximum: 450 IU per day in ART cycles

For ovulation induction in women not ovulating regularly: a starting dose of 75 IU per day for 14 days, with a maximum of 300 IU per day.

For men with hypogonadotropic hypogonadism: 150 IU three times per week, combined with hCG.

AMH is the strongest predictor of your dose

Modern clinics no longer start everyone at the same number. AMH (anti-Müllerian hormone), the blood marker of ovarian reserve, best predicts how many follicles you will grow — and therefore how much FSH you need.

A 2021 study in Reproductive BioMedicine Online shows why individualization matters. Among 153 women identified as potential high responders (AMH above 35 pmol/L), those on a conventional 150 IU/day dose grew 18.3 ± 7.0 follicles ≥12 mm and had a three-fold higher OHSS risk than women on an AMH-based (lower) dose, who grew 12.1 ± 7.0. Ongoing pregnancy rates were similar (24.0% vs 28.2% per started cycle): the lower, individualized dose bought the same chance of pregnancy with far less risk.

In practice that evidence maps to three dosing bands:

• High AMH (e.g., >15 pmol/L) / PCOS: lower starts of 75–150 IU to guard against OHSS.
• Normal AMH (about 1–3.5 ng/mL or equivalent): 150–225 IU is the common starting range.
• Low AMH (<0.5–1 ng/mL) / advanced age: 300–450 IU is sometimes used to recruit every possible follicle, though evidence that very high doses improve live birth is limited.

Never adjust your dose yourself. Start, step-up, step-down, and trigger timing are reproductive endocrinologist decisions, made on ultrasound and bloodwork every 2–4 days during stimulation.

Gonal-F vs Follistim vs Menopur: What’s the Difference?

Patients constantly ask how Gonal-F compares with the other injectable gonadotropins. This is the practical map:

Three differences actually matter at the clinic:

1. Gonal-F vs Follistim: both are pure recombinant FSH with no LH; studies show comparable efficacy, and the choice comes down to insurance formulary, supply, and pen preference.
2. Gonal-F vs Menopur: Menopur adds LH activity; some meta-analyses suggest hMG or FSH+LH may help poor responders, while FSH alone remains standard for normal responders.
3. Gonal-F vs Rekovelle: follitropin delta is individualized from day one by AMH and weight — roughly 10 µg of delta matches the ovarian response of 150 IU/day of alfa, per a 2020 post-hoc analysis of 1,591 patients.

Clinics normally keep one brand for the whole cycle. Do not switch mid-cycle without explicit instructions — devices and microgram/unit equivalences differ.

How Do You Inject Gonal-F?

Gonal-F is given by subcutaneous injection (under the skin), never into muscle. Key points from the US label:

• Sites: abdomen or thigh, rotating daily
• Devices: multi-dose vial, or the pre-filled Gonal-F RFF Redi-ject pen designed for home self-injection — you dial the prescribed dose and press a button
• Timing: once daily at roughly the same hour throughout stimulation
• Missed dose: call the clinic immediately; never double up to catch up
• Preparation: use only the supplied diluent and materials, do not shake the vial, and follow the mixing instructions exactly

Most patients describe the injection as brief and manageable, and many find the pen far easier than vial-and-syringe. If you have never injected, the clinic’s nursing team teaches you in a self-injection training session.

What Are the Side Effects of Gonal-F?

The US prescribing information lists the adverse reactions reported in at least 5% of clinical trial participants.

In ART cycles: headache, nausea, pelvic pain, and abdominal pain.

In ovulation induction: ovarian cyst, headache, abdominal pain, OHSS, nausea, bloating, pain, and bleeding between periods.

The risk you most need to understand: OHSS

Ovarian hyperstimulation syndrome is the complication patients hear about most, for good reason — the ovaries over-respond, swell, and leak fluid into the abdomen, and severe cases need hospitalization. The essentials:

• Symptoms: rapid weight gain, severe bloating, abdominal swelling, nausea, reduced urination, shortness of breath
• Prevention: individualized (usually lower) FSH dosing, close monitoring, and sometimes a GnRH agonist trigger instead of hCG
• Action: call your clinic the moment these symptoms appear — do not wait

The label also lists rare but serious risks: blood clots, ovarian torsion, and multiple pregnancy, which is driven mainly by the number of embryos transferred.

How Much Does Gonal-F Cost?

In the United States, Gonal-F is one of the most expensive parts of an IVF cycle, and prices swing widely by pharmacy, insurance, and country:

A typical stimulation cycle consumes roughly 1,500–3,500 IU of FSH depending on dose and length, so most US patients spend $2,000–$6,000 on injections alone per cycle before insurance or assistance programs.

Five ways patients cut that bill:

1. Insurance: some US states mandate fertility coverage — check whether your plan’s pharmacy benefit covers gonadotropins and what prior authorization requires.
2. Manufacturer assistance: EMD Serono’s patient program can cut eligible out-of-pocket costs by up to 50%.
3. Biosimilars: where follitropin alfa biosimilars (Bemfola, Ovaleap) are sold, they are often markedly cheaper; Menopur may also price differently under your plan.
4. Treatment abroad: overseas clinics bundle medication into package quotes at a fraction of US retail.
5. Pharmacy shopping: gonadotropin prices vary dramatically between US pharmacies — compare GoodRx, manufacturer coupons, and specialty pharmacies.

Three Patients, Three Very Different Gonal-F Journeys

These stories were shared with consent; names and identifying details are changed to protect privacy.

Story 1: The high-AMH PCOS patient on a low dose — “I was terrified of OHSS”

Mei, 29, conceived a daughter after a low 112.5 IU Gonal-F start at her Bangkok clinic — 9 eggs retrieved, no OHSS, and about $1,800 in medication through the clinic’s pharmacy.

Mei, 29, from Guangzhou, had PCOS and an AMH of 6.8 ng/mL. Her Bangkok clinic started Gonal-F at 112.5 IU per day (a pen dial below the standard 150) because her high reserve meant she needed less, not more. Eleven days of stimulation grew 14 follicles, and the doctor triggered with Lupron instead of hCG to push OHSS risk even lower. “The nurses kept saying ‘low dose, low risk,’ and I was still scared after reading horror stories online. But they monitored every two days, and when my estrogen climbed they lowered my dose instead of panicking. I felt watched, not ignored.” Mei had no OHSS symptoms, 9 eggs were retrieved, and a frozen transfer gave her a daughter. Her medication cost through the Thai clinic’s pharmacy: about $1,800.

Story 2: The low-AMH patient on a high dose — “Every unit counted”

Sarah, 41, reached one day-5 blastocyst that tested euploid on PGT-A using a high-dose protocol of 300 IU Gonal-F plus 150 IU Menopur, at a gonadotropin bill of about $5,100.

Sarah, 41, in California, had an AMH of 0.4 ng/mL. Her doctor put her on 300 IU of Gonal-F daily plus 150 IU of Menopur — with limited reserve, the goal was to capture every follicle possible. “I watched my dosage like a hawk — at $4,000 a cycle for injections, every unit felt like gold.” The cycle yielded 5 eggs, 3 fertilized, and 1 reached day-5 blastocyst and tested euploid on PGT-A. “It didn’t give me quantity, but it gave me a real shot. My nurse taught me the pen in ten minutes, and honestly the injections were the least stressful part.” Sarah’s gonadotropin bill was about $5,100, partly offset by her employer’s fertility benefit.

Story 3: The first-timer who switched devices — “The pen changed everything”

Priya, 34, retrieved 8 eggs and ended her first IVF cycle in a live birth after switching from a multi-dose vial to the Redi-ject pen.

Priya, 34, in Singapore, started her first IVF cycle on Gonal-F dispensed as a multi-dose vial; her first injection took 20 minutes and a lot of deep breathing. “I nearly called the clinic crying. Then they swapped me to the Redi-ject pen — dial, press — four minutes the first time, and I did the rest of the cycle myself.” She stimulated 10 days, grew 11 follicles, and retrieved 8 eggs. “The physical part of IVF gets so much easier once you’ve done it twice. The waiting was the hard part.” Her cycle ended in a live birth after a fresh transfer.

FAQ

Q: What is the difference between Gonal-F and FSH?

None — Gonal-F is FSH. It is follitropin alfa, a lab-made copy of the follicle-stimulating hormone your pituitary produces, and the vial and the pen deliver the identical medication through different devices.

Injecting Gonal-F simply supplements your own FSH so the ovaries grow more follicles than the roughly 1 of a natural cycle.

Q: What is the average Gonal-F dose for IVF?

The FDA-approved starting dose is 150 IU per day, adjusted by 75–150 IU every 3–5 days up to a maximum of 450 IU. In real practice individual starts range from about 75 IU (high-AMH/PCOS) to 300–450 IU (low-AMH or advanced age).

Q: How long do you take Gonal-F?

Most patients inject once daily for 8–14 days, until ultrasound shows follicles at target size (typically 16–20 mm on average). The trigger shot follows, and retrieval happens 34–36 hours after that.

Q: Does Gonal-F cause weight gain?

Weight gain is not among the side effects reported in 5% or more of clinical trial participants in the US label, but bloating and fluid retention — especially with OHSS — can make you feel swollen. Rapid weight gain over just a few days combined with severe bloating is a call-your-clinic-now signal, not a wait-and-see one.

Q: Can you use Gonal-F and Menopur together?

Yes — pairing Gonal-F (FSH) with Menopur (FSH + LH) is a common strategy, particularly for poor responders and older patients; one example from the stories above is 300 IU of Gonal-F plus 150 IU of Menopur. Menopur’s LH comes from hMG, a urinary product carrying both hormones, and that LH component supports estrogen production and may improve follicle quality in some patients.

The clinic sets the ratio based on your response type.

Q: What is the success rate with Gonal-F?

No drug determines success on its own — age, egg quality, diagnosis, and clinic performance do; even in the high-OHSS-risk group of the 2021 study above, ongoing pregnancy rates were 24.0% vs 28.2% per started cycle between dosing strategies.

For real-world outcomes, check CDC national ART surveillance data and each clinic’s published rates.

Q: Can you inject Gonal-F yourself at home?

Yes — it is designed for subcutaneous self-injection throughout the 8–14 day stimulation window, especially via the pre-filled pen. Clinics train you first and usually have you practice with saline before the first real dose; after that you follow their instructions on dose, timing, and site rotation.

Q: What if you miss a Gonal-F dose?

Call the clinic right away, and never inject 2 doses at once to catch up. Depending on your cycle day, the doctor may have you inject as soon as you remember or shift the schedule — but that decision has to be theirs.

How to Plan a Gonal-F Cycle

Six preparation steps make a stimulation cycle far more manageable:

1. Request a written medication calendar — which dose, which days, and when to report for monitoring.
2. Understand your dose rationale — ask why your starting dose was chosen (AMH, AFC, age, prior cycles); if the answer never mentions your ovarian reserve, ask again.
3. Budget before day one — get an exact pharmacy quote, confirm insurance prior authorization, and check the manufacturer assistance program.
4. Finish injection training before starting — practice with saline if offered; the pen makes self-injection dramatically easier.
5. Know the red flags — severe bloating, rapid weight gain, shortness of breath, or reduced urination mean an immediate call to the clinic.
6. Compare clinics on the whole picture — medication is one line item; published success rates, monitoring quality, and cost transparency matter more. ProIVF lets you compare fertility centers worldwide in the hospital directory, or you can contact our team for help shortlisting.

This article was written by the ProIVF Medical Editorial Team and reviewed by the ProIVF Medical Advisory Board, based on the FDA-approved Gonal-F prescribing information (DailyMed), GoodRx pricing data, and peer-reviewed PubMed-indexed literature.

Last updated: August 14, 2026. This content is for informational purposes only and does not constitute medical advice. Diagnosis and treatment decisions belong with a qualified reproductive endocrinologist — always consult your care team about your specific situation.