Description
Letrozole by Ultima Pharmaceuticals delivers 5mg per tablet in 50-pill packs.
As a third-generation aromatase inhibitor (AI), Letrozole is one of the most powerful compounds used to reduce estrogen levels.
It is commonly applied in post-cycle therapy (PCT), on-cycle estrogen control, and in medical settings for conditions where estrogen suppression is required.
Key Benefits
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Potent estrogen suppression through aromatase inhibition
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Reduces risk of gynecomastia, water retention, and bloating during anabolic cycles
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Useful in post-cycle therapy (PCT) to help restore natural testosterone levels
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Long half-life allows for less frequent dosing
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Pharmaceutical-grade quality by Ultima Pharmaceuticals
How Letrozole Works
Letrozole is an aromatase inhibitor (AI).
It works by blocking the aromatase enzyme, which converts testosterone into estrogen.
This results in significantly lowered circulating estrogen levels, making it effective for on-cycle control and post-cycle recovery.
Compared to other AIs (like Arimidex), Letrozole is considered stronger, often chosen when maximum estrogen suppression is needed.
Dosage & Administration (Informational Only)
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Form: Oral tablets
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Strength: 5mg per tablet
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Pack Size: 50 tablets
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Typical On-Cycle Dose: 0.25–0.5mg every 2–3 days (high doses only in severe cases)
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PCT Dose: Low doses may be used depending on the protocol
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Half-Life: ~2 days (allows for spaced dosing)
⚠️ Because Letrozole is very strong, excessive use can cause estrogen suppression side effects (joint pain, low libido, mood changes).
Manufacturer Details
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Brand Name: Letrozole
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Active Ingredient: Letrozole
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Strength: 5mg per tablet
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Pack Size: 50 tablets
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Manufacturer: Ultima Pharmaceuticals
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Category: Aromatase Inhibitors / Ancillaries
Possible Stacking Options
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With Testosterone cycles: To control estrogen-related side effects
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With Nolvadex (Tamoxifen): As part of a PCT protocol
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With Aromasin (Exemestane): Alternate AI strategy depending on user tolerance
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With HCG (Human Chorionic Gonadotropin): To support testicular function in longer cycles
FAQ – Ultima Letrozole 5mg
Q: Is Letrozole stronger than Arimidex (Anastrozole)?
A: Yes, Letrozole is generally considered more potent, often used when Arimidex isn’t sufficient.
Q: Can Letrozole be used for PCT?
A: It can be included in PCT, but because of its strength, many prefer milder AIs unless strong suppression is required.
Q: Does Letrozole completely block estrogen?
A: At higher doses, Letrozole can drastically reduce estrogen to near-zero, which can negatively impact mood, libido, and joint health.
Q: How often should Letrozole be taken?
A: Due to its ~2-day half-life, dosing is typically every other day or every third day.
