Xeno Laboratories Testosterone Injectable Esters Lineup
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Oral · 2.5 mg/tab · 30 tabs
Xeno Labs Femara is letrozole at 2.5 mg per tablet, the strongest of the common nonsteroidal aromatase inhibitors. It blocks the enzyme that makes estrogen so completely that a quarter tablet is a normal starting point.
GMP-manufactured and HPLC-verified, with a COA held for each batch. Femara for sale with U.S. and international shipping.
Xeno Labs Femara is letrozole at 2.5 mg per tablet, the most potent of the nonsteroidal aromatase inhibitors. Estrogen control on a cycle usually starts with the gentler Arimidex or Aromasin, and letrozole is kept for the cases where estrogen is running high on a heavy Testosterone load or where breast symptoms have already started. The same molecule is sold under other labels, including the Dragon Pharma Femara. Buy Xeno Femara with the batch analysis on file.
The fact sheet puts daily 2.5 mg letrozole at 98.9 to 99.1 percent suppression of aromatase activity, which is why this is not a tablet anyone takes as a default. The elimination half-life is about two days, so the effect is steady and dose changes take a couple of days to settle. Estrogen falls fast, and the drop can overshoot: dry, aching joints and a flat libido appear more often with letrozole than with anastrozole, and once the signal shows up the fix is less drug, not more.
The community pattern in the fact sheet starts at a quarter of a tablet, 0.625 mg, every other day, moving to half a tablet only when estradiol says so; the full 2.5 mg tablet daily is the medical dose and sits far above most on-cycle needs. Long uninterrupted use is linked to a bone density question, which is one reason the fact sheet describes letrozole as an emergency tool rather than a daily baseline. It is not a base and it does not restore natural production: recovery still runs through a SERM such as Tamox. Letrozole is also a tested substance: it sits in WADA class S4 and is banned at all times, with urinary detection reported from about ten days to over a month.
Prescription medicine in most countries: consult a healthcare professional before use.
| Trade Name | Femara |
| Generic Name | Letrozole |
| Manufacturer | Xeno Labs |
| Dosage | 2.5 mg per tablet |
| Package | Sealed pack, count shown at checkout |
| Drug Class | Aromatase inhibitor, nonsteroidal, type II |
| Administration | Oral, quarter or half tablet, often every other day |
| Reference Half-Life | About 2 days |
| Shipping | U.S. domestic and international |
Before you ask
Femara is letrozole, the most potent of the nonsteroidal aromatase inhibitors. It blocks the enzyme that turns androgens into estrogen, so on a cycle it is used where water retention, breast tenderness or an out-of-range estradiol reading needs a stronger block than anastrozole or exemestane delivers. Medically the same tablet is used to induce ovulation.
Daily 2.5 mg suppresses aromatase activity by 98.9 to 99.1 percent in the fact sheet, which is far more than an on-cycle need requires. Community protocols therefore start at a quarter of a tablet, 0.625 mg, every other day, and move up only if estradiol says so. Splitting a 2.5 mg tablet is normal practice with this drug, and the tablet is scored to make that practical.
Dry, aching joints and a fall in libido are the usual signs that estrogen has gone too low, and the fact sheet notes these are reported more often with letrozole than with anastrozole because the block is stronger. Hot flushes, sweating, headache and disturbed sleep are also listed, along with lipid changes and a bone density question on long uninterrupted use. The answer to all of them is a lower dose, not a different tablet.
The elimination half-life is about two days, so a dose change takes a couple of days to show its full effect and the drug does not vanish overnight when it is stopped. Detection is much longer: studies cited in the fact sheet report nonsteroidal aromatase inhibitors in urine from about ten days to more than a month.
Yes. The fact sheet places letrozole in WADA class S4, hormone and metabolic modulators, and it is prohibited at all times rather than only in competition. That applies to any tested athlete, and the long urinary detection window makes timing irrelevant: the only safe approach for a tested competitor is not to use it.
Xeno Labs Femara 2.5 mg tablets are stocked here and ship to U.S. and international addresses, with a Certificate of Analysis held for each batch. Letrozole is a prescription medicine in most countries, so check the rules where you live and consult a healthcare professional before use.
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