Product Overview
Xeno Laboratories Finasteride is finasteride at 1 mg per tablet, an oral inhibitor of the type 2 form of the 5-alpha reductase enzyme. It sits in the support group of this line and has nothing in common with an anabolic: the substance does not build tissue, does not restore the axis and does not manage estrogen. Its single measurable effect is to reduce how much testosterone is converted into dihydrotestosterone, the androgen that drives scalp hair loss and prostate growth.
The scale of that effect is what makes the tablet interesting to a bodybuilding audience. Reference data describe a fall in serum DHT of roughly 70 percent, and a reduction of about 90 percent inside the prostate, with only a modest change in testosterone itself. The half-life is five to six hours orally, longer in older users, and the daily 1 mg step holds the enzyme suppressed at a plateau rather than producing a rising effect. Since 2009 the substance has been absent from the banned list in sport, and the sources record no standard doping window for it.
Its place in a course is specific. Compounds that are themselves DHT-derived, or that produce a lot of DHT by conversion, create the load the tablet is used against, which is why it turns up beside the testosterone series, the nandrolone series and the Proviron tablet. It changes nothing about aromatisation, so it is not a substitute for Arimidex when the problem is estrogen rather than DHT.
Dosage Protocol
The steps below come from the reference material for the substance rather than from a prescription. Finasteride is taken once a day, with or without food, and it is not a drug that is cycled on and off.
| Beginner | 1 mg a day for months, the amount used around hair retention |
| Intermediate | Still 1 mg a day; raising it does not give a proportional hair result |
| Advanced | 5 mg a day, which is the prostate indication rather than a hair step |
| Female | Not applicable; the tablet is not used in women in this setting |
| Administration | Oral once a day, independent of meals |
| Duration | Months, not weeks; hair and prostate effects are scored over three to six months |
Reading the timeline correctly matters more than the number on the tablet. The enzyme is inhibited within the first day, but the visible consequences develop slowly: an effect on the prostate takes three to six months in the clinical data, and hair changes are judged over months as well. A user who stops after four weeks because shedding has not changed has judged the tablet against the wrong clock, and one who raises the dose instead has moved past the point where the enzyme is already suppressed.
Suggested Protocols
The tablet appears in three arrangements, and in each one it is a supporting item rather than the point of the plan. The goal is to lower DHT load, not to cancel the androgen effect of a course.
What to Expect
- Serum DHT drops quickly, inside the first day of dosing, and stays on a plateau while the daily amount continues.
- Hair changes start with slower shedding; growth of new terminal hair is modest, around 15 percent in meta-analysis, so the tablet chiefly slows loss.
- Skin oiliness and acne often improve over weeks as DHT falls, which some users notice before anything happens to their hair.
- Prostate effects belong to a longer timeline of three to six months, with nothing fast about them.
- Prostate specific antigen drops by roughly half, so a screening result has to be read with that correction in mind.
- The tablet does not protect everyone against androgen-driven hair loss, and it does not remove the need for a decision based on blood work and family history.
Side Effects and Management
Monitoring and Follow-Up
This tablet is not a course and does not have a post-cycle step. Stopping it simply returns DHT to where it was. What it needs instead is a monitoring routine that covers the hormone panel, the prostate marker and the reasons the user started it.
Where the DHT question leads next is set out on the pages for Avodart and Proviron, while the estrogen and recovery sides of the same plan are covered under Tamox and Clomiphene.
