Alternatives to Follitropin Alfa (Gonal-F) If You Can't Fill Your Prescription

Getting a call from your specialty pharmacy saying they're out of Gonal-F is every fertility patient's nightmare — especially when your injection start date is circled on the calendar. The good news is that follitropin alfa is not your only option. There are well-established alternative medications that your reproductive endocrinologist can prescribe, and many patients switch without any impact on their treatment outcomes.

Here's what you need to know about the alternatives to follitropin alfa (Gonal-F) — what they are, how they compare, and which situations each one suits best.

What Does Follitropin Alfa (Gonal-F) Do?

Before exploring alternatives, it helps to understand what Gonal-F actually does. It is a recombinant (lab-made) form of follicle-stimulating hormone (FSH). FSH is the hormone your pituitary gland naturally releases to stimulate the growth of egg follicles in your ovaries. In fertility treatment, injectable FSH like Gonal-F provides a controlled, precise dose of this hormone to stimulate multiple follicles — either for ovulation induction or for IVF egg retrieval.

In men with hypogonadotropic hypogonadism, Gonal-F stimulates spermatogenesis — the production of sperm — by acting on cells in the testes.

Alternative #1: Follistim AQ (Follitropin Beta) — The Most Direct Substitute

Follistim AQ (follitropin beta), made by Organon, is the closest equivalent to Gonal-F available in the United States. Like Gonal-F, it is a recombinant FSH product — meaning it is lab-made rather than derived from human urine. Both medications work the same way, bind to the same FSH receptors, and clinical studies show comparable outcomes in terms of the number of eggs retrieved, fertilization rates, and pregnancy rates.

The key practical differences: Follistim uses a cartridge-and-pen delivery system (the Follistim Pen) rather than the Redi-ject format. Doses are measured in International Units (IU) and dosing between the two medications is not directly interchangeable on a 1:1 basis — your doctor will adjust the prescription. Pricing can differ between the two depending on your insurance formulary and which specialty pharmacy you use.

Best for: Women in IVF or ovulation induction protocols where a pure FSH product is needed and switching from Gonal-F is necessary. Also used for male infertility with hypogonadotropic hypogonadism.

Alternative #2: Menopur (Menotropins) — FSH Plus LH

Menopur (menotropins), made by Ferring Pharmaceuticals, is a purified urinary-derived gonadotropin that contains both FSH and LH (luteinizing hormone). This is an important distinction from Gonal-F, which provides FSH only with no LH activity. The addition of LH can affect the hormonal profile of stimulation.

Menopur comes as a 75 IU powder vial that must be reconstituted with sterile water before injection. Many IVF protocols actually combine Menopur with a pure FSH product like Gonal-F. If your doctor switches you fully to Menopur, they may add supplemental low-dose hCG (which has LH-like activity) to balance the hormone profile. Cash price: approximately $90 to $130 per 75 IU vial. A full IVF cycle may require 20 to 40 vials.

Best for: Patients whose protocols specifically call for LH activity, or those for whom Menopur has better availability or insurance coverage. Not a direct 1:1 swap — your doctor must adjust the protocol.

Alternative #3: Letrozole (Femara) — An Oral Option for Ovulation Induction

Letrozole is an aromatase inhibitor originally developed to treat breast cancer but now widely used off-label for ovulation induction. It works by briefly lowering estrogen levels, which signals the pituitary gland to produce more FSH naturally. Letrozole does not replace injectable FSH in IVF cycles — it is primarily used for less intensive treatments like timed intercourse or intrauterine insemination (IUI).

The big advantage: letrozole is inexpensive (often under $20 per cycle with generic pricing) and involves no injections. It is particularly effective for ovulation induction in women with PCOS. It is not equivalent to Gonal-F for IVF — but if you're doing ovulation induction only, it may be a viable conversation with your doctor.

Best for: Women doing ovulation induction with timed intercourse or IUI, especially those with PCOS, who are looking for a less intensive and less expensive option.

Alternative #4: Clomid (Clomiphene Citrate) — First-Line Oral Option

Clomiphene citrate (Clomid) is an oral selective estrogen receptor modulator (SERM) that has been used for ovulation induction for decades. Like letrozole, it's used for less intensive fertility treatments, not IVF. It works differently than Gonal-F — rather than providing exogenous FSH, it blocks estrogen receptors in the brain, tricking the body into producing more FSH on its own.

Generic clomiphene is extremely inexpensive — often $10 to $30 per cycle. It is not a substitute for Gonal-F in IVF protocols but may be an appropriate first step for patients who haven't tried oral ovulation induction yet.

Should You Switch Medications?

This is a decision to make with your reproductive endocrinologist — not independently. Fertility protocols are carefully calibrated to your age, diagnosis, hormone levels, antral follicle count, and history. Switching medications mid-cycle or without proper medical guidance can affect your response and outcomes. Always contact your clinic immediately if you have trouble sourcing your medication so they can make adjustments before your cycle is affected.

If Gonal-F is available but you just can't find it locally, medfinder can search pharmacy availability near you — potentially saving you from switching medications at all. Read our guide on how to find Gonal-F in stock near you for step-by-step strategies.