Xeno Laboratories Testosterone Injectable Esters Lineup
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Oral · 10 mg/tab · 50 tabs
Xeno Labs Primo S is methenolone acetate, the oral form of Primobolan, supplied as 10 mg tablets. It is a mild, non-aromatising DHT-derived oral that avoids the hepatic load of the methylated tablets, and it loses part of each dose on the first pass through the liver.
GMP-manufactured and HPLC-verified, with a Certificate of Analysis held per batch. Primo S for sale with U.S. and international shipping.
Xeno Labs Primo S is methenolone acetate, the oral member of the Primobolan family, supplied as 10 mg tablets. The fact sheet describes it as a DHT-derived oral with moderate anabolic and weak androgenic activity, no aromatisation and no water retention, and with liver injury not described in the literature because it is not a 17-alpha-alkylated steroid. The trade-off is delivery: an oral dose passes through the liver before it reaches the bloodstream, so more milligrams are needed for the same job than with the injectable Primobolan enanthate. Buy Xeno Primo S with the batch analysis on file.
Methenolone binds the androgen receptor gently, which is why the fact sheet puts its anabolic activity at moderate and its androgenic activity at low, and why it is usually described as a slow builder rather than a quick one. Nothing in the profile aromatises, so the puffiness, breast tenderness and blood pressure creep of an estrogenic oral do not appear, and the look stays dry. Changes arrive over weeks, not days, and the oral form is a weaker milligram for milligram tool than the injection.
The oral acetate has a short ester and no published half-life in the sources used, so the daily amount is split into two or three doses; the shorter the gap between doses, the less of the day is spent below the intended level. Natural testosterone production is suppressed at any effective dose, which is why a base and a recovery plan are part of using it, not an afterthought.
There is no clinical dose for physique use, so all figures are community practice: the fact sheet states plainly that no verified oral dose exists and that the injection-era numbers cannot simply be carried across. Blocks are kept short because the tablet count climbs against first-pass losses, and recovery is planned with Tamox or Clomiphene once the block ends.
For laboratory research only. Consult a healthcare professional before use.
| Trade Name | Primo S (Primobolan Oral) |
| Generic Name | Methenolone acetate |
| Manufacturer | Xeno Labs |
| Dosage | 10 mg per tablet |
| Package | Sealed pack, count shown at checkout |
| Drug Class | DHT-derived oral anabolic, non-methylated |
| Administration | Oral, split into two or three doses |
| Reference Half-Life | Not published for the oral acetate |
| Shipping | U.S. domestic and international |
Before you ask
Primo S is methenolone acetate, the oral version of Primobolan. It is a DHT-derived anabolic with moderate anabolic and weak androgenic activity, it does not aromatise, and because it is not 17-alpha-alkylated the fact sheet does not record the liver injury typical of methylated orals. It is a slow, mild builder rather than a fast one.
The acetate ester is short and no half-life for the oral form is published in the sources used, so one large dose clears faster than the same amount taken in two or three parts. Splitting keeps the level steadier and is the usual way the tablets are taken. The number of tablets rises quickly because the oral route loses part of each dose to the liver.
No. The fact sheet states that methenolone does not aromatise, and that estrogenic effects, gynecomastia and water retention are not part of its profile. That is the main reason it is chosen for a dry look, and it also means an aromatase inhibitor is not automatically part of a Primo S block.
Not in the way a methylated oral is. It is not 17-alpha-alkylated, and the fact sheet records that liver injury for methenolone is not described in the literature, so the hepatic load is labelled low. Any other methylated product in the same stack still carries its own load, and standard bloodwork remains the way to confirm how a person is tolerating a block.
The fact sheet lists suppression of natural testosterone production at any effective dose, a fall in HDL cholesterol, acne or oily skin in some users, and virilisation risk in women, where the advice is to stop at the first sign. Stomach discomfort from a high tablet count is managed by taking the doses with food.
Xeno Labs Primo S 10 mg tablets are stocked here and ship to U.S. and international addresses, with a Certificate of Analysis held for each batch. Research use only: consult a healthcare professional before handling or using this product.
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