This medication is used to treat certain types of breast cancer (such as hormone-receptor-positive breast cancer) in women after menopause. Letrozole is also used to help prevent the cancer from returning. Some breast cancers are made to grow faster by a natural hormone called estrogen. Letrozole decreases the amount of estrogen the body makes and helps to slow or reverse the growth of these breast cancers.
Read the Patient Information Leaflet provided by your pharmacist before you start using letrozole and each time you get a refill. If you have any questions, consult your doctor or pharmacist.
Take this medication by mouth, usually once daily with or without food or as directed by your doctor.
Dosage is based on your medical condition and response to treatment.
Use this medication regularly to get the most benefit from it. To help you remember, take it at the same time each day.
Since this drug can be absorbed through the skin and lungs, women who are pregnant should not handle this medication or breathe the dust from the tablets. (See also Precautions section.
Letrozole is approved by the United States Food and Drug Administration (FDA) for the treatment of local or metastatic breast cancer that is hormone receptor positive or has an unknown receptor status in postmenopausal women
Letrozole has been used for ovulation induction by fertility doctors since 2001 because it has fewer side-effects than clomiphene (Clomid) and less chance of multiple gestation. A study of 150 babies following treatment with letrozole or letrozole and gonadotropins presented at the American Society of Reproductive Medicine 2005 Conference found no difference in overall abnormalities but did find a significantly higher rate of locomotor and cardiac abnormalities among the group having taken letrozole compared to natural conception.[7] A larger, follow-up study with 911 babies compared those born following treatment with letrozole to those born following treatment with clomiphene.[8] That study also found no significant difference in the rate of overall abnormalities, but found that congenital cardiac anomalies was significantly higher in the clomiphene group compared to the letrozole group. Despite this, India banned the usage of letrozole in 2011, citing potential risks to infants.[9] In 2012, an Indian parliamentary committee said that the drug controller office colluded with letrozole's makers to approve the drug for infertility in India and also stated that letrozole's use for infertility was illegal worldwide;[10] however, such off-label uses are legal in many countries such as the US and UK
The antiestrogen action of letrozole has been shown to be useful in pretreatment for termination of pregnancy, in combination with misoprostol. It can be used in place of mifepristone, which is expensive and unavailable in many countries.[13]
Letrozole is sometimes used as a treatment for gynecomastia, although it is probably most effective at this if caught in an early stage (such as in users of anabolic steroids).
Some studies have shown that letrozole can be used to promote spermatogenesis in male patients suffering from nonobstructive azoospermia.
Letrozole has also been shown to delay the fusing of the growth plates in mice.When used in combination with growth hormone, letrozole has been shown effective in one adolescent boy with a short stature.
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Xiamen Huayongjian Biotechnology Co., Ltd.
Contacts: June & Eason
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Hot flashes, hair loss, joint/bone/muscle pain, tiredness, unusual sweating, nausea, diarrhea, dizziness, and trouble sleeping may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if you have any serious side effects, including: bone fractures, mental/mood changes (such as depression, anxiety), swelling of arms/legs, blurred vision, persistent nausea/vomiting, unusual tiredness, dark urine, yellowing eyes/skin..
This medication (and cancer) may rarely cause serious problems from blood clots (such as heart attack or stroke). Get medical help right away if you experience: sudden shortness of breath, chest/jaw/left arm pain, confusion, coughing up blood, sudden dizziness/fainting,
pain/swelling/warmth in the groin/calf, tingling/weakness/numbness in the arms/legs, slurred speech, weakness on one side of the body, vision changes, sudden/severe headache.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat/neck), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist
1.For products exported we can offer COA Certificate and official PI.
2.We are manufacturer with own lab and factory, can provide high quality products with factory price.
3.Products can be sent out in 24 hours after payment. Tracking number available, fixed service person are 7x24h for you to contact.
4.Secure and discreet shipment. Various transportation methods for your choice, like DHL/UPS/TNT/FedEx/SF-express.
5.Customs pass and satisfied rate ≥99%.
6.For hot sale products we have stock in there for transferring.
7.Products purity is test by our quality department strictly before sending, and you can askthe third testing organization come and inspect, such as (SGS/ CTI/ ITS), only after our confirmation will we send it out to you.
8.We have different couriers to different countries.
9.We have clients throughout the world.
1. Any inquiries will be replied within 24 hours.
2. Dedication to quality, supply & service.
3. Strictly on selecting raw materials.
4. OEM/ODM Available.
5. Reasonable & competitive price, fast lead time.
6. Sample is available for your evaluation & formulation development.
Peptides | Specifications |
MGF | 2mg/vial |
PEG MGF | 2mg/vial |
CJC-1295 with DAC | 2mg/vial |
CJC-1295 without DAC | 2mg/vial |
PT-141 | 10mg/vial |
MT-1 (Melanotan 1) | 10mg/vial |
MT-2 (Melanotan 2) | 10mg/vial |
GHRP-2 | 5mg/vial & 10mg/vial |
GHRP-6 | 5mg/vial & 10mg/vial |
Ipamorelin | 2mg/Vial |
Hexarelin | 2mg/vial |
Sermorelin | 2mg/vial |
Oxytocin | 2mg/vial |
TB500 | 2mg/vial |
Pentadecapeptide BPC 157 | 2mg/vial |
2mg/vial | |
Triptorelin | 2mg/vial |
Tesamorelin | 2mg/vial |
Gonadorelin | 2mg/vial |
Gonadorelin | 10mg/vial |
DSIP | 2mg/vial |
Selank | 5mg/vial |
Follistatin 344 | 1mg/vial |
ACE 031 | 1mg/vial |
Myostatin(GDF-8) | 1mg/vial |
Q1: Have your Product Quality been Approved by the Third Party Lab?
A: Yes, all the products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France etc. So you will be assured with Good Quality if you choose us.
Q2: How do you treat quality complaint?
A: First of all, our QC department will do the strict examination of our export products by HPLC, UV, GC ,
TLC and so on in order to reduce the quality problem to near zero. If there is a real quality problem, caused by us, we will send you free goods for replacement or refund your loss.
Q3: Do you Accept Sample Order?
A: Yes, we can accept small order from 10g, 100g and 1kg for your evaluation quality of our goods.
Q4: Is there any discount?
A: Yes, for the larger quantity, we always support with better price for our further cooperation.
Q5: Do you accept VISA business credit card?
A: Sorry we don't accept VISA credit card, but we'd like to accept the bank transfer, Western Union, Paypal or Bitcoin.
Q6: How long does it take the goods to arrive?
It is Depending on your location,
For the small order, please expect the 5-7 days by DHL,UPS,TNT, FEDEX, EMS and so on.
For the mass order, please allow the 5-8 days by Air or 20-35 days by Sea.
Q7: Do you have any reshipment policy?
Of course, we have the good after-sale service and re-shipment policy if the parcel lose.
Our long association with our clients has brought great benefits, we always take the upmost care in the packaging of our products. Our clients will confirm this as even they struggle to find them without help at times.
But in spite of our best efforts, it is still possible will seize a small number of packages. In this circumstance we promise reship free to establish a long term relationship with each other.
Q8: Can I get a sample?
A: Of course. For most products, we can provide you a free sample to test the quality, while the shipping cost should be undertook by your side.
We have formed a technology and management team that cooperate closely with some overseas Labs all speak highly of our safe shipping and goods.
please do not hesitate to contact us.