Letrozole Raw Powder Basic Information
Product Name: Letrozole
Alias: Femara
CAS Registry Number: 112809-51-5
Purity: 98%+
MF: C17H11N5
MW: 285.3
Appearance: White crystalline powder.

Femara (generic name is letrozole) is an oral drug which can be an effective fertility treatment for women with ovulation problems, or for those with unexplained infertility.
Letrozole is a powerful Aromatase Inhibitor that was developed to fight breast cancer. For athletes and bodybuilders, it is a drug used to combat the estrogenic side effects of anabolic steroids water-retention, acne and gynocomastia.
Femara vs. Clomid
Clomid or clomiphene citrate is an oral medication that is often used for stimulating ovulation in women that do not ovulate on their own. Femara has sometimes been used in these women as an alternative to clomiphene.
● Some women will not respond to Clomid at all.
Letrozole can induce ovulation in some of these women.
● Women that do ovulate with Clomid still might never get pregnant with it.
Some of these women will conceive with letrozole
● There can be unpleasant side effects with Clomid that cause women to stop taking it
This can be a reason to use Femara instead of Clomid
Letrozole vs. Clomid
Letrozole is an active drug, while Clomid was a brand-name medication that contained the active drug clomiphene. Clomid is no longer available, but its generic version, clomiphene, is still available.
Both letrozole and clomiphene are used to treat infertility in females* by helping to cause ovulation. Unlike letrozole, clomiphene is approved for this use.
Letrozole vs. Tamoxifen
Letrozole and tamoxifen are both used to treat breast cancer. They work by reducing the amount of the hormone estrogen in your body. These drugs are both forms of hormone therapy for breast cancer.
Letrozole is the generic version of the brand-name drug Femara. Tamoxifen is an active drug that's available only as a generic drug. It's not available as a brand-name medication.
In some cases, letrozole is prescribed for early breast cancer that's already been treated with surgery plus 5 years of tamoxifen therapy. (With early breast cancer, the cancer hasn't spread beyond your breast or lymph nodes in your armpits.)
Letrozole can interact with tamoxifen. So, it's recommended that you don't take the drugs at the same time. With this interaction, tamoxifen can reduce how well letrozole works.
Femara and Letrozole Dosing
- The most common dose of Femara is 2.5 mg per day on days five through nine of the menstrual cycle
- Sometimes it is given in higher doses of 5 mg or 7.5 mg per day
How long before letrozole's side effects start and how long they last?
Letrozole starts working right away in your body after you begin taking it. This means you can also have side effects from it right away.
You may have some side effects very quickly. These include side effects such as flushing, hot flashes, or headaches.
Other side effects may take longer to develop because they require a build-up of the drug in your body. These could include weakened bones, for example.
Usually, side effects from letrozole will be reduced after the first few months of treatment.
Letrozole Effect
Letrozole is a powerful Aromatase Inhibitor that was developed to fight breast cancer. For athletes and bodybuilders, it is a drug used to combat the estrogenic side effects of anabolic steroids water-retention, acne and gynocomastia. It will also raise testosterone levels because of the lowered estrogen in the body. Side effects from Letrozole include a lowered sex drive and continuous use can lead to lowered lipid function and an impaired immune system.
Dosages and Half Life
The half life is approximately 2-4 days. Dosages vary quite a bit, 0.25mg up to 1mg every day or every other day is a good starting dose. It's best to be conservative with the dosage because if you overdose the sides can be harsh.
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