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Clomiphene vs. Letrozole

Head-to-head comparisons of medication uses, side effects, warnings, and more.

Clomid

(clomiphene)

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Letrozole

(Femara)

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Summary for Clomiphene

Prescription only

Clomid (clomiphene) is a selective estrogen receptor modulator (SERM) used to treat infertility in people wanting to become pregnant. It works by causing ovulation, or egg release. You'll take a dose by mouth every day for 5 days, typically during your menstrual period. Some of the more common side effects include hot flashes, bloating, and stomach pain.

Indications for Clomiphene

Pros and Cons for Clomiphene

Pros

Cons

  • Typically only recommended for up to 3 cycles, not a long-term treatment
  • Can cause vision problems in some rare cases
  • Not safe if you have liver problems or certain thyroid problems

Common Side Effects for Clomiphene

  • Swollen ovaries (14%)
  • Hot flashes (10%)
  • Stomach pain, discomfort, or bloating (6%)

Warnings for Clomiphene

  • Vision changes
  • Ovarian hyperstimulation syndrome (OHSS)
  • Possible risk of harm to unborn baby

Summary for Letrozole

Prescription only

Letrozole (Femara) is an aromatase inhibitor, a type of hormonal therapy. It’s FDA-approved to treat or prevent breast cancer in females who’ve already gone through menopause. It’s sometimes prescribed off-label by fertility specialists to help females become pregnant. Letrozole (Femara) is taken by mouth, typically once a day for breast cancer. Common side effects include hot flashes and pain in the bones, muscles, and joints.

Indications for Letrozole

Pros and Cons for Letrozole

Pros

  • Can be used during early and advanced stages of breast cancer
  • Taken by mouth once daily
  • Available as a lower-cost generic

Cons

  • Only for females who've reached menopause (for treating breast cancer)
  • Can cause menopausal symptoms, such as hot flashes and night sweats
  • Can weaken your bones if taken long-term

Common Side Effects for Letrozole

  • High blood cholesterol levels (52%)
  • Hot flashes (34%)
  • Muscle, bone, or joint pain (25%)

Note: Side effects reported by females who took letrozole (Femara) after surgery for early breast cancer.

Warnings for Letrozole

  • Weakened bones
  • High cholesterol levels
  • Liver problems
  • Risk of drowsiness
  • Harm to unborn baby

Prices with our coupons for Clomiphene vs. Letrozole

Price Card Drug Icon
Clomid30 tablets / 50mg
$111.49-
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Price Card Drug Icon
Letrozole10 tablets / 2.5mg
$8.91$173.70
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