Product Overview
Xeno Metribolone is a pack of 50 small tablets holding 1 mg of methyltrienolone each. The compound is also written metribolone, R1881 or simply oral tren, and it is the 17-alpha-methylated relative of trenbolone: an oral androgen built to survive the first pass through the liver, which is exactly what makes it hard on that organ.
The 1 mg tablet is a convenience rather than a dosing solution. Working levels are discussed in micrograms, so users split tablets or work from a liquid preparation. Nothing about the pack size makes this a beginner product, and the honest framing is that this is a niche compound for people who already understand what microgram dosing and weekly liver panels mean.
What Methyltrienolone Does
Methyltrienolone binds the androgen receptor with very high affinity and produces strength and hardness without any water. It does not aromatize, so estrogen-driven puffiness is not part of its profile. It does carry progestogenic activity, though, and breast discomfort has been reported without elevated estradiol being the cause.
The limit is the liver, not the muscle. Because the 17-alpha-methyl group blocks rapid breakdown, the compound recirculates and stresses hepatocytes; published and community reports describe enzyme rises and, in some cases, cholestatic patterns appearing within two to four weeks. That single fact is what keeps valid blocks short and what makes stacking it with another oral a bad idea.
Dosage Protocol
No approved dose exists and the references below are practice-level only. Because the active window is short and no measured half-life is documented, tablets are divided across the day.
| Beginner reference | 250 micrograms a day for 2 weeks |
| Intermediate reference | 250-500 micrograms a day, 2-3 weeks |
| Advanced reference | Up to 500 micrograms a day, 3-4 weeks maximum |
| Female | Not recommended: extreme androgenicity and liver load |
| Administration | Oral, split into several small doses through the day |
Monitoring means liver enzymes and bilirubin before the block, at the end of week one or two, and again before any decision to continue. Appetite loss, nausea and a general sense of being unwell are treated as stop signals in the sources, not as things to push through.
Suggested Protocols
- Strength on a short runway. Two to three weeks added to an injectable base, then stop. Nothing is gained by extending it.
- Never two orals at once. The liver load adds up across every 17-alpha-alkylated compound in a stack, so an oral kickstart and this tablet do not belong in the same week.
- Liver support is assumed. TUDCA or NAC and a light alcohol-free run are standard parts of the block, not extras.
- Have the exit planned. Because recovery starts one to two days after the last tablet, the recovery course should already be in hand before the block begins.
What to Expect
- Strength moves almost immediately. Users report heavier lifts within days, often with a parallel drop in how they feel.
- Hard, dense muscle without water. By week one or two the look is dry; mass gain is minimal because nothing aromatizes.
- Appetite and energy can fall. Poor appetite and malaise are described as early signs of intolerance rather than as side effects to accept.
- Liver markers rise quickly. Enzyme changes are expected and are the reason bloodwork drives the calendar.
- Chest issues without estrogen. Progestogenic activity means tenderness can occur even when estradiol looks normal on a test.
- Suppression is complete. The axis stops producing, and the recovery block does the restoring.
Side Effects and Management
Post-Cycle Therapy
The oral form clears in a day or two, so the recovery block starts almost immediately after the last tablet.
Buying This Pack
A pack of fifty 1 mg tablets lasts a very short block by design, which is worth remembering when ordering: two to three weeks of microgram dosing consumes far less than a user might assume, and a second pack bought for a longer run would only increase exposure to the part of this compound that does the damage.
The metribolone pack is listed in the Xeno Laboratories range alongside the injectable and oral androgens. Because this compound is normally added to a base rather than run alone, the usual pairings are a testosterone ester such as Testosterone Esters or the SuperTest 375 blend, with an injectable Trenbolone Esters for a dry finish. Support pages worth reading first are T3 and Accutan for the liver, and Clomiphene for recovery, all within the same brand.
If the plan is to add the tablet to an existing base, the Dianabol 20 and Testosterone Esters pages carry the injectable options that most often sit underneath it, and HCG 5000 IU covers the recovery end of the block.
