Blackstone Labs
:
Letro XT
Estrogen Blocker
Details
https://www.predatornutrition.com/estrogen-blockers/blackstone-labs/BSL1040%2F100%2F101.htmlGoal: Boost Testosterone
- Increases muscle hardness
- Boosts testosterone levels
- Reduces estrogen
- Reduces estrogen side effects
- Increases strength and improves body composition
- Natural non-androgenic testosterone booster
Price per serving: £1.00
Variations
-
Select Size
- 60 Tablets
- 60 Tablets
Product Actions
UK Shipping
We offer FREE DELIVERY to UK for orders worth £50 or more and these are shipped using the 4-5 Day Delivery service. We also offer Free Next Working Day delivery with Hermes (on orders of £100). For SAME DAY DISPATCH, you need to place your order before 5PM GMT otherwise your order will be dispatched the following working day.
Service | Price | Notes |
FREE FedEx Tracked Economy DELIVERY | £0.00 | On orders over £50. |
FREE Hermes Tracked DELIVERY | £0.00 | On orders over £75. |
STANDARD DELIVERY | £2.79 | On orders below £50. |
Hermes NEXT WORKING DAY | £3.99 | Free on orders over £100. *Excluding Northern Ireland, The Scottish Highlands & Islands |
DPD NEXT WORKING DAY | £5.99 | *Excluding Northern Ireland, The Scottish Highlands & Islands |
DPD SATURDAY DELIVERY | £7.99 | *Excluding Northern Ireland, The Scottish Highlands & Islands |
International Shipping
Please Note: Free shipping applies to the first parcel only. A surcharge payment may be required If your order needs to be shipped in multiple parcels.
Country | Price | Free Shipping |
Austria | £8.99 | Free on orders over £200 |
Australia | £9.99 *** | Free on orders over £200 (under 1kg) ** |
Belgium | £6.99 | Free on orders over £150 |
Bosnia | £19.99 | Free on orders over £260 |
Bulgaria | £11.99 | Free on orders over £250 |
Canada | £10.99 *** | Orders over £200 (under 1kg) ** |
Croatia | £9.99 | Free on orders over £250 |
Cyprus | £13.99** | Doesn't qualify for free shipping |
Czech Republic | £9.99 | Free on orders over £200 |
Denmark | £6.99 | Free on orders over £150 |
Estonia | £11.99** | Free on orders over £250 |
Finland | £9.99 | Free on orders over £200 |
France | £6.99 | Free on orders over £150 |
Germany | £4.99 | Free on orders over £150 |
Greece | £9.99** | Free on orders over £250 |
Hungary | £8.99 | Free on orders over £200 |
Iceland | £9.99-£21.99 | Doesn't qualify for free shipping |
India | £16.99 *** | Doesn’t qualify for free shipping |
Indonesia | £21.99 *** | Doesn’t qualify for free shipping |
Israel | £12.99 * | Doesn’t qualify for free shipping |
Italy | £7.99 | Free on orders over £150 |
Japan | £12.99 * | Doesn’t qualify for free shipping |
Kuwait | £12.99 * | Doesn’t qualify for free shipping |
Latvia | £7.99 | Free on orders over £200 |
Lithuania | £8.99 | Free on orders over £200 |
Luxembourg | £8.99 | Free on orders over £200 |
Malta | £14.99** | Doesn’t qualify for free shipping |
Netherlands | £5.99 | Free on orders over £150 |
New Zealand | £12.99 * | Doesn’t qualify for free shipping |
Norway | £8.99*** | Free on orders over £210 |
Poland | £9.99 | Free on orders over £200 |
Portugal | £5.99 | Free on orders over £150 |
Qatar | £15.99 | Doesn’t qualify for free shipping |
Ireland | £5.99 | Free on orders over £150 |
Romania | £9.99 | Free on orders over £200 |
Saudi Arabia | £9.99 * | Doesn’t qualify for free shipping |
Serbia | £15.99 | Free on orders over £260 |
Singapore | £12.99 * | Doesn’t qualify for free shipping |
Slovakia | £9.99 | Free on orders over £200 |
Slovenia | £9.99 | Free on orders over £200 |
Spain | £6.99 | Free on orders over £150 |
Spain - Baleares | £9.99** | Doesn’t qualify for free shipping |
Spain - Canary Islands | £15.99*** | Doesn’t qualify for free shipping |
Sweden | £8.99 | Free on orders over £200 |
Switzerland | £8.99*** | Free on orders over £200 |
United Arab Emirates | £12.99 * | Doesn’t qualify for free shipping |
USA | £7.99 * | Free on orders over £135 (under 2kg) ** |
* Parcels over the weight of 2kg will be charged depending on the weight of the parcel.
** Parcels over the weight of 2kg will not qualify for FREE SHIPPING and therefore will be charged depending on the weight of the parcel.
*** Parcels over the weight of 1kg will be charged depending on the weight of the parcel.
Blackstone Labs Letro XT ingredients & nutrition facts
Blackstone Labs Letro XT 60 Tablets | ||||||||||||
Servings per container: 60 | ||||||||||||
Serving Size: 1 Tablet | ||||||||||||
Amount Per Serving | %DV* | |||||||||||
|
||||||||||||
* Daily Value is Based on a 2000kcal Diet | ||||||||||||
† Daily Value is not yet established | ||||||||||||
Other Ingredients: Microcrystalline Cellulose, Phosphatidylcholine 75%, Hydroxypropyl Beta Cyclodextrin, Medium Chain Triglycerides, Phytosterols, Magnesium Stearate, Silica |
Letro XT dosage & how to use
As a dietary supplement, take 1 tablet of Letro XT in the morning and one tablet in the afternoon. Do not exceed 4 tablets per day.Product Guide
Why
Blackstone Labs Letro XT is a great way to naturally increase anabolic effects that will help you to gain muscle mass. If you have recently used a prohormone or SARM, it is important to perform a PCT. Letro XT has HPTA up-regulating effects that help to normalise natural testosterone levels whilst decreasing excess estrogen in the body. The only downside would be it is so focused on estrogen that it could probably be complemented by a product that enhances anabolism via a different pathway such as Adamantine and X-Factor or else a testosterone booster which specifically targets increasing free testosterone levels such as DS Activate Xtreme.
When
Letro XT can be used following a prohormone or AAS cycle as well as as a standalone muscle builder where its dual-action effect of lowering estrogen and boosting test can make it ideal for those on a recomposition cycle or a lean mass cycle. It will help support testosterone, minimise water retention and obviate the risk of estrogen related side effects by lowering the potentially high levels of estrogen that occur post cycle.
Who
Letro XT is the ideal supplement for individuals following a prohormone cycle in order to normalise hormone levels. This product, due to its ability to reduce estrogen and inhibit the aromatase enzyme should only be used by males over 21, and is not intended for use by women.
Predator Nutrition Letro XT Review
Letro XT is an all in one PCT formula and testosterone booster that is designed to help you normalise hormones following a prohormone or AAS cycle. Following your cycle, your natural testosterone levels will be very low, but your estrogen will remain within range of normal levels. If the ratio of testosterone to estrogen favours estrogen, this can cause unwanted side effects such as gyno, reduced strength and decreased ability to build muscle.
This is where Letro XT can help. Using non-androgenic testosterone boosters, Letro XT will help shift the balance back in favour of testosterone and in favour of anabolism. Letro doesn’t have any androgenic metabolites that could cause HPTA (hypothalamic pituitary testes axis) suppression. This make it an effective supplement for anyone seeking a PCT supplement that targets estrogen minimisation especially.
INGREDIENT OVERVIEW
3b-hydroxy-androsta-1,4,6-triene-17-one
This is an aromatase inhibitor that permanently binds to the aromatase enzyme. In studies, this reduces estrogen biosynthesis and significantly increases the levels of endogenous steroids such as DHT and testosterone in humans. It has a prolonged half life which means you only need to take it once a day, unlike other anti-estrogens.
3b-hydroxy-androsta-4,6-diene-17-one
This compound is another AI that binds permanently to the aromatase enzyme, effectively stopping the conversion of testosterone to estrogen.
Androsta-3,5-Diene-7,17-Dione
This powerful product also known as Armistane, works by decreasing circulating levels of estrogen in the body. It helps to reduce the amount of androgens in the body that can convert to estrogen through aromatase enzymes. Fans of this compound alone may prefer to consider Fusion Supplements Arimistane in case they feel Letro XT suppresses estrogen too much (which can cause a negative effect on mood and joint integrity to name a couple of sides associated with very low estrogen).

Predator Review
Predator Nutrition Letro XT Review
Letro XT is an all in one PCT formula and testosterone booster that is designed to help you normalise hormones following a prohormone or AAS cycle. Following your cycle, your natural testosterone levels will be very low, but your estrogen will remain within range of normal levels. If the ratio of testosterone to estrogen favours estrogen, this can cause unwanted side effects such as gyno, reduced strength and decreased ability to build muscle.
This is where Letro XT can help. Using non-androgenic testosterone boosters, Letro XT will help shift the balance back in favour of testosterone and in favour of anabolism. Letro doesn’t have any androgenic metabolites that could cause HPTA (hypothalamic pituitary testes axis) suppression. This make it an effective supplement for anyone seeking a PCT supplement that targets estrogen minimisation especially.
INGREDIENT OVERVIEW
3b-hydroxy-androsta-1,4,6-triene-17-one
This is an aromatase inhibitor that permanently binds to the aromatase enzyme. In studies, this reduces estrogen biosynthesis and significantly increases the levels of endogenous steroids such as DHT and testosterone in humans. It has a prolonged half life which means you only need to take it once a day, unlike other anti-estrogens.
3b-hydroxy-androsta-4,6-diene-17-one
This compound is another AI that binds permanently to the aromatase enzyme, effectively stopping the conversion of testosterone to estrogen.
Androsta-3,5-Diene-7,17-Dione
This powerful product also known as Armistane, works by decreasing circulating levels of estrogen in the body. It helps to reduce the amount of androgens in the body that can convert to estrogen through aromatase enzymes. Fans of this compound alone may prefer to consider Fusion Supplements Arimistane in case they feel Letro XT suppresses estrogen too much (which can cause a negative effect on mood and joint integrity to name a couple of sides associated with very low estrogen).
Customer Reviews
Nutrition
Blackstone Labs Letro XT ingredients & nutrition facts
Blackstone Labs Letro XT 60 Tablets | ||||||||||||
Servings per container: 60 | ||||||||||||
Serving Size: 1 Tablet | ||||||||||||
Amount Per Serving | %DV* | |||||||||||
|
||||||||||||
* Daily Value is Based on a 2000kcal Diet | ||||||||||||
† Daily Value is not yet established | ||||||||||||
Other Ingredients: Microcrystalline Cellulose, Phosphatidylcholine 75%, Hydroxypropyl Beta Cyclodextrin, Medium Chain Triglycerides, Phytosterols, Magnesium Stearate, Silica |