

Drug Class: Aromatase Inhibitor (AI)
Active Substance: Letrozole
Strength: 2.5 mg/tablet
Amount: 50 tablets
Active Life: ~48 hours
Average Dose: 0.25–1.25 mg EOD
Liver Toxicity: Low
Aromatization Rate: N/A (blocks estrogen synthesis)
Anabolic Rate: None
Androgenic Rate: None
Manufacturer: British Dragon
British Dragon Letrobol delivers 2.5 mg of pharmaceutical-grade Letrozole per tablet—one of the most powerful aromatase inhibitors (AIs) used in bodybuilding, hormone therapy, and post-cycle treatment. Letrozole is renowned for its ability to reduce estrogen levels by up to 98%, making it highly effective for combating gynecomastia, bloating, and other estrogen-related side effects.
Letrozole, originally developed as an anti-cancer drug (Femara), is a third-generation non-steroidal aromatase inhibitor. It is widely prescribed for estrogen-receptor-positive breast cancer, but in the performance enhancement world, it's a go-to compound for crushing estrogen when running high-dose anabolic steroid cycles.
According to the National Library of Medicine, Letrozole is one of the most potent oral AIs, with long-lasting effects on serum estrogen suppression.
This AI is often added to advanced stacks including testosterone and high-aromatizing bulking agents like Methanabol 50 or Testabol Depot.
Letrozole should be used cautiously, as it is extremely potent. Suggested dosing protocols:
Overuse can lead to excessive estrogen suppression, causing low libido, joint pain, and mood issues.
Letrobol is usually stacked with aromatizing anabolic steroids to prevent or reverse estrogenic side effects. Commonly paired compounds include:
During PCT, it's often used in the early phase alongside British Dragon Clomiphene or Tamoxifen to prevent estrogen rebound.
British Dragon Letrobol is ideal for:
While effective, Letrozole is unforgiving if overdosed. Possible side effects include:
Use bloodwork to guide AI dosing and avoid over-suppression.
If you're seeking a high-grade Letrozole source with fast U.S. delivery, this trusted supplier of British Dragon Letrobol offers genuine products and discreet packaging.
British Dragon Letrobol (Letrozole 2.5 mg) is a potent and reliable aromatase inhibitor for advanced cycle control. Whether you need to address gynecomastia, reduce bloat, or prepare for competition, this AI delivers sharp estrogen control with clinical precision—just be sure to use it responsibly and monitor your E2 levels throughout the cycle.
A common starting dose is 0.25 to 0.5 mg every other day. Increase only if estrogen-related side effects appear or bloodwork confirms elevated E2 levels.
Yes, it can be used briefly at the beginning of PCT to suppress rebound estrogen, especially when transitioning off aromatizing steroids.
Yes, Letrozole is significantly more potent than Anastrozole (Arimidex) and should be dosed carefully to avoid crashing estrogen.
Letrozole doesn't directly cause hair loss, but lowering estrogen too much may contribute to hormonal imbalance and indirectly affect hair in sensitive users.
Letrozole begins lowering estrogen within 24 hours, with maximum suppression reached within 48–72 hours of consistent dosing.
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Drug Class: Aromatase Inhibitor (AI)
Active Substance: Letrozole
Strength: 2.5 mg/tablet
Amount: 100 tablets
Active Life: ~2–4 days
Average Dose: 0.5–2.5 mg every other day
Liver Toxicity: Low
Aromatization Rate: Blocks conversion
Anabolic Rate: None
Androgenic Rate: None
Manufacturer: Dragon Pharma
Drug Class: Aromatase Inhibitor
Active Substance: Letrozole
Strength: 2.5 mg/tablet
Amount: 30 tablets
Active Life: ~2 days
Average Dose: 0.5–2.5 mg/day
Liver Toxicity: Low
Aromatization Rate: None
Anabolic Rate: N/A
Androgenic Rate: N/A
Manufacturer: Kalpa Pharmaceuticals
Drug Class: Aromatase Inhibitor (AI)
Active Substance: Letrozole
Strength: 2.5 mg/tablet
Amount: 50 tablets
Active Life: ~2 days
Average Dose: 0.5–2.5 mg/day
Liver Toxicity: Low
Aromatization Rate: N/A (blocks aromatase)
Anabolic Rate: None
Androgenic Rate: None
Manufacturer: Axiolabs
Drug Class: Aromatase Inhibitor (AI)
Active Substance: Anastrozole
Strength: 1 mg/tablet
Amount: 30 Tablets
Active Life: 2-3 Days
Average Dose: 0.5–1 mg every other day
Liver Toxicity: Low
Aromatization Rate: Blocks Estrogen Conversion
Anabolic Rate: N/A
Androgenic Rate: N/A
Manufacturer: Kalpa Pharmaceuticals
Drug Class: Aromatase Inhibitor (Type I, Steroidal)
Active Substance: Exemestane
Strength: 25 mg/tablet
Amount: 30 Tablets
Active Life: 24–36 Hours
Average Dose: 12.5–25 mg/day
Liver Toxicity: Low
Aromatization Rate: Irreversibly Inhibits Aromatase
Anabolic Rate: N/A
Androgenic Rate: Low
Manufacturer: Kalpa Pharmaceuticals