Description:
Finasteride is an antiandrogen which acts by inhibiting type II 5-alpha reductase, the enzyme that converts testosterone to dihydrotestosterone (DHT). It is used as a treatment in benign prostatic hyperplasia (BPH) in low doses, and prostate cancer in higher doses. It is also indicated for use in combination with doxazosin therapy to reduce the risk for symptomatic progression of BPH. Additionally, it is registered in many countries for androgenetic alopecia (male-pattern baldness).
Finasteride was approved initially in 1992 as Proscar, a treatment for prostate enlargement, but the sponsor had studied 1 mg of finasteride and demonstrated hair growth in male pattern hair loss. On December 22, 1997, the FDA approved finasteride to treat male pattern hair loss.
Quick details:
Chemical name: Finasteride
English Synonyms: PROSCAR;PROSTIDE;N-(2-METHYL-2-PROPYL)-3-OXO-4-AZA-5ALPHA-ANDROST-1-ENE-17BETA-CARBOXAMIDE;MK-906;(5alpha,17beta)-(1,1-dimethylethyl)-3-oxo-4-azaandrost-1-ene-17-carboxamide;17beta-(n-tert-butylcarbamoyl)-4-aza-5alpha-androst-1-en-3-one;4-azaandrost-1-ene-17-carboxamide,n-(1,1-dimethylethyl)-3-oxo-,(5-alpha,17-be;4-azaandrost-1-ene-17-carboxamide,n-(1,1-dimethylethyl)-3-oxo-,(5alpha,17beta
CAS NO.: 98319-26-7
Assay: Above 99%
Molecular Formula: C23H36N2O2
Molecular Weight: 372.54
Packing: foil bag
Melting point: 250°C
Character: White or white crystalline solid.
Solubility: It is freely soluble in chloroform and in lower alcohol solvents, but is practically insoluble in water.
Usage: The drug can be very effective in reducing blood and dihydro testosterone within the prostate. Finasteride no affinity to the androgen receptor.
Application:
Propecia (finasteride) is used for treatment of hair loss; For the treatment of benign prostatic hyperplasia, enlarged prostate shrink; improve urinary flow and improvement of benign prostatic hyperplasia caused symptoms.
Clinical studies suggest that, with finasteride 1 mg/day, continuous oral 3 months or slightly long can have hair growth, after continuous treatment 1 year hair growth rate to 48%, and can continue to fall off, taking the hair organization 2 years hair growth rate reached 66% ~ 83%.
As measured by hair counts, in a five-year study of men with mild to moderate hair loss, two out of three of the men who took 1 mg of finasteride daily regrew some hair. In contrast, all of the men in the study who were not taking finasteride lost hair. In the same study, based on photographs that were reviewed by an independent panel of dermatologists, 48% of those treated with finasteride experienced visible regrowth of hair, and a further 42% had no further loss. Average hair count in the treatment group remained above baseline, and showed an increasing difference from hair count in the placebo group, for all five years of the study. Finasteride is effective only for as long as it is taken; the hair gained or maintained is lost within 6-12 months of ceasing therapy. In clinical studies, finasteride, like minoxidil, was shown to work on both the crown area and the hairline, but is most successful in the crown area.
COA:
| Test Items |
Specification |
Test Results |
Description |
White or off-white crystalline powder |
Off-white crystalline powder |
Specific rotation |
-56°~-60° |
-58.2° |
Identification |
IR |
Matches with working standard |
Complies |
HPLC |
Solubility |
Freely soluble in chloroform and in alcohol;
|
Conform |
|
Very slightly soluble in water
|
Heavy metals |
≤10ppm |
<10ppm |
Water |
≤0.3% |
0.22% |
Residue on ignition |
≤0.1% |
0.05% |
Relative material |
Maximum impurities≤0.5% |
0.36% |
Total impurities≤1.0% |
0.52% |
Assay |
98.5~101.0% |
99.68% |
Conclusion |
The specification conform with Enterprise standard |
Finasteride dosage for male and female:
The standard dose of finasteride in the treatment of male alopecia is 1 mg per day. This shows the results of most men with hair loss. Treatment of female baldness or hirsutism usually requires a standard dose. This is usually between 1.25 mg per day and 2.5 mg of tablet per day.
When used to treat the expansion of prostaglandin, the dose is much larger. This is usually 5 mg tablets per day. If you need treatment of enlarged prostate and treatment of hair loss, this will be the dose. In this case, unless your doctor tells you, no more than 5 mg per day.
These doses are standard doses, but should not be used as an alternative to medical counseling. Not everyone is responding to drugs in the same way, and may require smaller or stronger doses. To obtain the correct dose of finasteride for your body and your condition, you must seek medical advice.
Finasteride effect:
(1) Benign prostatic hyperplasia
Doctors use finasteride to treat BPH, informally known as the enlarged prostate. Finasteride can improve symptoms associated with BPH, such as dysuria, get up at night, urinate, urinate began to hesitate to reduce urinary flow.
(2) Male type baldness
Finasteride is used to treat male male hair loss (androgenic alopecia). Treatment 6 months after treatment can reduce the hair loss of 30% improvement, as long as the medication, the effect will continue.
(3) Non-tagged use
Finasteride is sometimes used in male to female transsexual hormone replacement therapy because of its antiandrogenic properties in combination with androgen forms. However, for this purpose, very few studies of finasteride, efficacy evidence is limited.
Your message must be between 20-3,000 characters!
