Mesterolone (Proviron) 25 mg by Schering-Plough description, Mesterolone (Proviron) 25 mg by Schering-Plough side effects, Mesterolone (Proviron) 25 mg by Schering-Plough price, Mesterolone (Proviron) 25 mg by Schering-Plough substance
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Proviron (Mesterolone)®
Substance:Mesterolone
Delivery: 20 tabs, each tab 25mg
Manufacturer: Proviron by Schering-Plough
ONE ORDER UNIT INCLUDES: 20 tabs, each containing 25 mg
PER TAB: 25 mg
TOTAL TABS PER ONE ORDER UNIT: 20 tabs
TOTAL mg PER ONE ORDER UNIT: 500 mg
ALTERNATIVE DRUG NAMES: Provrion, Mesterolone, Masterlone, Schering Proviron
ACTIVE SUBSTANCE: Mesterolone
Description Mesterolone (Proviron) 25 mg by Schering-Plough: Proviron (Proviron; generic name Mesterlone) from Schering balances a deficiency of male sex hormones (androgen) formation, which begin to fall gradually with increasing age. Proviron (Proviron; generic name Mesterlone) from Schering is used to treat a condition called hypogonadism. It does this by replacing the bodies natural hormone testosterone when not enough is made by the body.
Testosterone is a natural male hormone, known as an androgen, which controls normal sexual development in men. Testosterone is essential for the development and maintenance of the male reproductive organs as well as other male characteristics, such as deep voice, increased muscle strength, hair growth etc.
Proviron (Mesterolone), an anabolic steroid, is particularly interesting. I suspect that it not only acts as an antiaromatase but in an unknown DHT-like anti-estrogenic manner. This might involve estrogen receptor downregulation for example. In any case, aromatase inhibition and/or Clomid don't seem to give the same effect on appearance and muscle hardness as when Proviron is included.
This drug has good binding to the androgen receptor, but in muscle tissue most of it never reaches the androgen receptor because it is enzymatically converted to the diol. Thus, it is not an effective anabolic. It is somewhat effective as an anti-gyno agent, however, and appears to reduce estrogenic bloating if that problem exists.
Proviron reduces either levels of estrogen or the effect of estrogen. Thus, it is useful for avoiding gynecomastia, although it probably should not be relied upon as the sole drug for that. It is not hepatotoxic. It has the usual side effects of anabolic/androgenic steroids, with the added effect that it is particularly prone to cause erections.
Mesterolone is an orally active, 1-methylated DHT. Like Masteron, but then actually delivered in an oral fashion. DHT is the conversion product of testosterone at the 5-alpha-reductase enzyme, the result being a hormone that is 3 to 4 times as androgenic and is structurally incapable of forming estrogen. One would imagine then that mesterolone would be a perfect drug to enhance strength and add small but completely lean gains to the frame. Unfortunately there is a control mechanism for DHT in the human body. When levels get too high, the 3alpha hydroxysteroid dehydrogenase enzyme converts it to a mostly inactive compound known as 3-alpha (5-alpha-androstan-3alpha,17beta-diol), a prohormone if you will. It can equally convert back to DHT by way of the same enzyme when low levels of DHT are detected. But it means that unless one uses ridiculously high amounts, most of what is administered is quite useless at the height of the androgen receptor in muscle tissue and thus mesterolone is not particularly suited, if at all, to promote muscle hypertrophy.
Proviron has four distinct uses in the world of bodybuilding. The first being the result of its structure. It is 5-alpha reduced and not capable of forming estrogen, yet it nonetheless has a much higher affinity for the aromatase enzyme (which converts testosterone to estrogen) than testosterone does. That means in administering it with testosterone or another aromatizable compound, it prevents estrogen build-up because it binds to the aromatase enzyme very strongly, thereby preventing these steroids from interacting with it and forming estrogen. So Mesterolone use has the extreme benefit of reducing estrogenic side-effects and water retention noted with other steroids, and as such still help to provide mostly lean gains. Its also been suggested that it may actually downgrade the actual estrogen receptor making it doubly effective at reducing circulating estrogen levels.
The second use is in enhancing the potency of testosterone. Testosterone in the body at normal physiological levels is mostly inactive. As much as 97 or 98 percent of testosterone in that amount is bound to sex hormone binding globulin (SHBG) and albumin, two proteins. In such a form testosterone is mostly inactive. But as with the aromatase enzyme, DHT has a higher affinity for these proteins than testosterone does, so when administered simultaneously the mesterolone will attach to the SHBG and albumin, leaving larger amounts of free testosterone to mediate anabolic activities such as protein synthesis. Another way in which it helps to increase gains. Its also another part of the equation that makes it ineffective on its own, as binding to these proteins too, would render it a non-issue at the androgen receptor.
Thirdly, mesterolone is added in pre-contest phases to increase a distinct hardness and muscle density. Probably due to its reduction in circulating estrogen, perhaps due to the downregulating of the estrogen receptor in muscle tissue, it decreases the total water build-up of the body giving its user a much leaner look, and a visual effect of possessing "harder" muscles with more cuts and striations. Proviron is often used as a last-minute secret by a lot of bodybuilders and both actors and models have used it time and again to deliver top shape day in day out, when needed. Like the other methylated DHT compound, drostanolone, mesterolone is particularly potent in achieving this feat.
Lastly Proviron is used during a cycle of certain hormones such as nandrolone, with a distinct lack of androgenic nature, or perhaps 5-alpha reduced hormones that don't have the same affinities as DHT does. Such compounds, thinking of trenbolone, nandrolone and such in particular, have been known to decrease libido. Limiting the athlete to perform sexually being the logical result. DHT plays a key role in this process and is therefore administered in conjunction with such steroids to ease or relieve this annoying side-effect. Proviron is also commonly prescribed by doctors to people with low levels of testosterone, or patients with chronic impotence. Its not perceived as a powerful anabolic, but it gets the job done equally well if not better than other anabolic steroids making it a favorite in medical practices due to its lower chance of abuse.
Mesterolone is generally well liked nonetheless as it delivers very few side-effects in men. In high doses it can cause some virilization symptoms in women. But because of the high level of deactivation and pre-destination in the system (albumin, SHBG, 3bHSD, aromatase) quite a lot of it, if not all simply never reaches the androgen receptor where it would cause anabolic effects, but also side-effects. So its relatively safe. Doses between 25 and 250 mg per day are used with no adverse effects. 50 mg per day is usually sufficient to be effective in each of the four cases we mentioned up above, so going higher really isn't necessary. Unlike what some suggest or believe, its not advised that Proviron be used when not used in conjunction with another steroid, as it too is quite suppressive of natural testosterone, leading to all sorts of future complications upon discontinuation. Ranging from loss of libido or erectile dysfunction all the way up to infertility. One would not be aware of such dangers because Proviron fulfills most of the functions of normal levels of testosterone.
Stacking and Use:
Mesterolone is an oral alkylated steroid. If used primarily as an anti-aromatase drug, using it throughout a longer cycle (10-12 weeks) of injectables may elevate liver values a little bit, though much, much less than one would expect with a 17-alpha-alkylated steroid. Eventhough instead of inhibiting gains, mesterolone may actually contribute to gains. So that's a bit of a shame. Its not quite as toxic since its not alkylated in the same fashion, but at the 1 position, which reduces hepatic breakdown, but not like 17-alpha alkylation. The reason for the change of position I assume, is because alkylating at the 17-alpha position has been shown to reduce affinity for sex hormone binding proteins. This would in turn decrease its ability to free testosterone. Nonetheless the delivery rate is quite good. Its taken daily in 50-100 mg doses.
The best thing to stack it with is testosterone of course. Its most easily bound to SHBG and albumin, and deactivated for up to 98%. Since the DHT can compete for these structures with higher affinity it would naturally lead to a higher yield of whatever testosterone product you stacked it with. Since DHT levels are notably higher now there is also more stimulation of the androgen receptor causing more strength gains, and because of its affinity for aromatase the overall estrogen level decreases as well. This has as a result that gains are leaner, and once again the overall testosterone yield is increased as less I converted at the aromatase enzyme.
It's of course used in other stacks with products such as methandrostenolone, boldenone and nandrolone to reduce estrogenic activity and increase muscle hardness. The addition of proviron makes boldenone a dead lock for a cutting stack and for some may even make it possible to use nandrolone while cutting, although the use of Winstrol or a receptor antagonist in conjunction is wishful as well. The benefit of adding it to a nandrolone stack is that it may also help you reduce the decrease in libido suffered from nandrolone, since the latter is mostly deactivated by 5-alpha reductase, an enzyme that makes other hormones more androgenic.
Proviron is an anti-aromatase, so obviously anti-estrogens would be futile and redundant. Blood pressure medication for those prone to hypertension may be wise, as this DHT can increase the blood pressure.
Mesterolone (Proviron)is a synthetic, orally effective androgen which does not have any anabolic characteristics. Mesterolone (Proviron)is used in school medicine to ease or cure disturbances eaused by a deficiency of male sex hormones. Many athletes, for this reason, often use Mesterolone (Proviron)at the end of a steroid treatment in order to increase the reduced testosterone production. This, however is not a good idea since Mesterolone (Proviron)has no effect on the body's own testosterone production but-as mentioned in the beginning-only reduces or completely eliminates the dysfunctions caused by the testosterone deficiency. These are in particular impotence which is mostly caused by an androgen deficiency that can occur after the discontinuance of steroids, and infertility which manifests itself in a reduced sperm count and a reduced sperm quality. Mesterolone (Proviron)is therefore taken during a steroid administration or after discontinuing the use of the steroids, to eliminate a possible impotency or a reduced sexual interest. This, however does not contribute to the maintainance of strength and muscle mass after the treatment. There are other better suited compounds for this (see HCG and Clomid). For this reason Mesterolone (Proviron)is unfortunately cunsidered by many to be a useless and unnecessary compound.
You should be aware that Mesterolone (Proviron)is also an estrogen antagonist which prevents the aromatization of steroids. Unlike the antiestrogen Nolvadex which only blocks the estrogen receptors (see Nolvadex) Mesterolone (Proviron)already prevents the aromatizing of steroids. Therefore gynecomastia and increased water retention are successfully blocked. Since Mesterolone (Proviron)strongly suppresses the forming of estrogens no rebound effect occurs after discontinuation of use of the compound as is the case with, for example, Nolvadex where an aromatization of the steroids is not prevented. One can say that Nolvadex cures the problem of aromatization at its root while Nolvadex simply cures the symptoms. For this reason male athletes should prefer Mesterolone (Proviron)to Nolvadex. With Mesterolone (Proviron)the athlete obtains more muscle hardness since the androgen level is increased and the estrogen concentration remains low. This, in particular, is noted positively during the preparation for a competition when used in combination with a diet. Female athletes who naturally have a higher estrogen level often supplement their steroid intake with Mesterolone (Proviron)resulting in an increased muscle hardness. In the past it was common for bodybuilders to take a daily dose of one 25 mg tablet over several weeks, sometimes even months, in order to appear hard all year round. This was especially important for athletes appearances at guest performances, seminars and photo sessions. Today Clenbuterol is usually taken over the entire year since possible virilization symptoms cannot occur which is not yet the case with Proviron. Since Mesterolone (Proviron)is very effective male athletes usually need only 50 mg/day which means that the athlete usually takes one 25 mg tablet in the morning and another 25 mg tablet in the evening. In some cases one 25 mg tablet per day is sufficient. When combining Mesterolone (Proviron)with Nolvadex (50 mg Proviron/day and 20 mg Nolvadex/day) this will lead to an almost complete suppression of estrogen.
The side effects of Mesterolone (Proviron)in men are low at a dosage of 2-3 tablets/day so that Proviron, taken for example in combination with a steroid cycle, can be used comparatively without risk over several weeks. Since Mesterolone (Proviron)is well-tolerated by the liver liver dysfunctions do not occur in the given dosages. For athletes who are used to acting under the motto "more is better" the intake of Mesterolone (Proviron)could have a paradoxical effect. The most common side effect of Proviron-or in this case, secondary symptom- is in part a distinct sexual overstimulation and in some cases continuous penis erection. Since this condition can be painful and lead to possible damages, a lower dosage or discontinuing the compound are the only sensible solutions. Female athletes should use Mesterolone (Proviron)with caution since possible androgenic side effects cannot be excluded. Women who want to give Mesterolone (Proviron)a try should not take more than one 25 mg tablet per day. Higher dosages and periods of intake of more than four weeks considerably increase the risk of virilization symptoms. Female athletes who have no difficulties with Mesterolone (Proviron)obtain good results with 25 mg Proviron/day and 20 mg Nolvadex/day and, in combination with a diet, report an accelerated fat breakdown and continuously harder muscles.
Mesterolone (Proviron)is one of the very few steroid hormones which is still sufficiently available. The brand name Mesterolone (Proviron)costs about $35 in Germany and contains fifty 25 mg tablets. Vistimon by Jenapharm costs $ 14 per box and is packaged in two push-through strips of 10 tablets each. Mesterolone (Proviron)by Asche contains 30 dragees and costs $20.. As one can see all German manufacturers charge about $70 for one 25 mg Mesterolon tablet. This is similar to the generally observed price of $ 1 per tablet on the black market. Since the Spanish and Mexican Mesterolone (Proviron)are less expensive than the German Mesterolone (Proviron)(all compounds are by Schering) they are more readily available on the black market. The original price for 20 tablets in Spain, for example, is $ 3.60. Depending on the country of origin Mesterolone (Proviron)is packaged differently. The German Mesterolone (Proviron)is offered in small glass vials while the Spanish, Greek, and Mexican versions are included in push-through strips. However, all Mesterolone (Proviron)tablets have one thing in common: they are all indented and on the back have the stamp AX,surrounded by a hexagon. So far there are no fakes available of either Mesterolone (Proviron)or its generic compounds.
Mesterolone (Proviron) 25 mg by Schering-Plough
Description Mesterolone (Proviron) 25 mg by Schering-Plough:
by Bill Roberts - Proviron, an anabolic steroid, is particularly interesting. I suspect that it not only acts as an antiaromatase but in an unknown DHT-like anti-estrogenic manner. This might involve estrogen receptor downregulation for example. In any case, aromatase inhibition and/or Clomid don’t seem to give the same effect on appearance and muscle hardness as when Mesterolone (Proviron)is included.
This drug has good binding to the androgen receptor, but in muscle tissue most of it never reaches the androgen receptor because it is enzymatically converted to the diol. Thus, it is not an effective anabolic. It is somewhat effective as an anti-gyno agent, however, and appears to reduce estrogenic bloating if that problem exists.
Mesterolone (Proviron)reduces either levels of estrogen or the effect of estrogen. Thus, it is useful for avoiding gynecomastia, although it probably should not be relied upon as the sole drug for that. It is not hepatotoxic. It has the usual side effects of anabolic/androgenic steroids, with the added effect that it is particularly prone to cause erections.
Alternative Description Mesterolone (Proviron) 25 mg by Schering-Plough:
Proviron (Mesterolone)
Proviron is the brand name for the orally applicable androgen and DHT (dihydrotestosterone) derivative called Mesterolone. Roughly 5% of testosterone undergoes 5-alpha reduction to form the potent androgen DHT, which is a sex hormone and androgen hormone. DHT plays a major role in the formation of the male genitals, and, in adults, it acts as the primary androgen in the prostate and hair follicles. Proviron is almost as pure a DHT steroid as you will find out there. With DHT compounds such as proviron, you need not worry about any estrogen aromatization.
Medical uses
Studies have shown proviron is effective for depression, anxiety and to boost lack of sex drive. Hence, it would make sense that those with bipolar, unipolar, and dysthymia would benefit from this hormone. It’s generally prescribed by doctors to men with low libido. In addition, it’s a precursor to full TRT (testosterone replacement therapy).
Bodybuilding
Proviron was popularized years ago as an anti-estrogen because it is has a high affinity to bind to the aromatase enzyme, so anabolic steroid (AS) users could use it to serve as their AI (aromatase inhibitor) replacement. Bodybuilders were using it during post cycle therapy (PCT); unfortunately, studies have shown proviron does suppress LH (luteinizing hormone) — in some cases. As a result, high proviron dosage can prevent the pituitary gland from recovering after a steroid cycle. Some users insist proviron does not suppress the HPTA when used in PCT or during a bridge; however, this is up for debate. As a side note, some studies support long term use of proviron at high dosages without serious suppression. The science supports proviron use for PCT but not in every case.
Now that we have aromasin, arimidex, and letrozole, proviron has become obsolete when it comes to anti-estrogen usage. We know that the true aromatase inhibitors (AI) are safe to use during post cycle therapy, and will not suppress your HPTA. Though, proviron shouldn’t either.
In this respect, it doesn’t mean proviron does not have its uses on cycle when using an aromatizing compound such as dianabol, testosterone, nandrolones, or equipoise. In fact, a user can expect to have a harder look, more vascularity, and less puffiness when stacking proviron with a wet compound.
Another benefit of proviron is that it binds very well to SHBG (sex hormone binding globulin), which is the hormone responsible for reducing free testosterone circulating in the body. This is probably the reason why some use proviron during PCT.
Those that compete will appreciate proviron’s hardening properties. Since proviron is 5-alpha reduced and not capable of forming estrogen, it will help give a drier look.
Stacking vs. Not
Since it has no anabolic properties, proviron is worthless when used alone by a bodybuilder. However, when stacked, it can turn a wet compound into a perfect balance of size and hardness for your muscles. My favorite oral stack is dianabol and proviron at 25mgs each per day. I did not get the normal bloated and puffy muscle look from dbol alone as the proviron helped balance it out. Since proviron is a non c17 alpha-alkylated compound, it is safe to stack with an oral.
Proviron can be stacked with any anabolic steroid safely. In fact, it’s been called oral masteron by many, and rightfully so.
Sample Proviron Cycle:
| Week | Dianabol | Proviron | Cardarine (GW) | N2Guard |
| 1 | 40mgs/ED | 50mgs/ED | 20mgs/ED | 5caps/ED |
| 2 | 40mgs/ED | 50mgs/ED | 20mgs/ED | 5caps/ED |
| 3 | 40mgs/ED | 50mgs/ED | 20mgs/ED | 5caps/ED |
| 4 | 40mgs/ED | 50mgs/ED | 20mgs/ED | 5caps/ED |
| 5 | 40mgs/ED | 50mgs/ED | 20mgs/ED | 5caps/ED |
| 6 | 40mgs/ED | 50mgs/ED | 20mgs/ED | 5caps/ED |
| 7 | 40mgs/ED | 50mgs/ED | 20mgs/ED | 5caps/ED |
| 8 | 40mgs/ED | 50mgs/ED | 20mgs/ED | 5caps/ED |
Side Effects
Since proviron is such a pure DHT derivative, we can logically say that it comes with sides, just like any other anabolic steroid. However, the side effects come from its DHT characteristics, so you can expect male pattern baldness issues, especially if you are prone to it. This is why those that choose DHT compounds and suffer from hair issues will run a 5alpha reductase inhibitor such as finasteride, or dutasteride, to counteract this side effect. DHT’s can also enlarge the prostate, but this is generally only in those that abuse them. As mentioned above, proviron is not a c17 alpha-alkylated compound, so liver problems are not an issue with it.
Dosages and Half Life
The half life of proviron is around 12 hours. A good recommended dosage is 25-75mg per day; though, I have personally never exceeded 50mg a day in a stack. The detection time is 5-6 weeks. so those that are tested often would be wise to avoid this compound. Females are not advised to take proviron because of its DHT properties. Side effects for females can be very nasty and unpredictable.
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