T3 25mcg – Liothyronine 25mcg, 100 Tablets by American Brand
T3 25mcg by American Brand is an oral thyroid hormone product. Each tablet contains 25mcg of Liothyronine. One bottle contains 100 tablets.
Liothyronine is the synthetic form of triiodothyronine, or T3. T3 is an active thyroid hormone involved in normal metabolism, growth, heart function, and energy use.
The American Brand product information lists an active half-life of 2.5 days. This matches current prescription information, which gives Liothyronine a biological half-life of about two and a half days.
Liothyronine is mainly prescribed for hypothyroidism and certain other thyroid-related conditions. It is not an anabolic steroid.
Customers can browse other available products through the GainBuilt Fitness Shop or review products by manufacturer on the GainBuilt Fitness Brands page.
What Is T3 25mcg?
T3 25mcg contains Liothyronine Sodium as its active thyroid hormone.
Each American Brand tablet provides 25mcg of Liothyronine. The bottle contains 100 tablets.
The main product profile includes:
- Active Ingredient: Liothyronine
- Strength: 25mcg per tablet
- Quantity: 100 Tablets
- Classification: Thyroid Hormone
- Active Half-Life: About 2.5 days
- Administration: Oral tablet
- Acne: Not a typical effect
- Aromatization: Not applicable
- Water Retention: Not an estrogen-related effect
Liothyronine belongs to the thyroid-agent class.
It is used to replace thyroid hormone when the body does not make enough on its own. MedlinePlus lists hypothyroidism among its established medical uses.
T3 25mcg is not an anabolic steroid.
Terms such as aromatization are therefore not relevant to its main pharmacology.
How Does T3 25mcg Work?
T3 25mcg works by supplying the body with Liothyronine.
T3 enters cells and interacts with thyroid hormone receptors.
These receptors influence gene activity and protein production. Thyroid hormones also affect the body’s use of carbohydrates, fats, and proteins.
T3 acts faster than T4.
Official pharmacology information states that Liothyronine activity can begin within a few hours. Maximum pharmacologic response can occur within about two to three days.
This faster action is one major difference between T3 and T4.
However, faster action also means dose accuracy matters.
Too much thyroid hormone can produce symptoms similar to hyperthyroidism.
Why Choose American Brand T3 25mcg?
American Brand provides T3 25mcg in a simple oral tablet format.
Each tablet has a clearly defined 25mcg strength.
One bottle contains 100 tablets.
Key product features include:
- 25mcg Liothyronine per tablet
- 100 tablets per bottle
- Oral administration
- Recognized thyroid hormone ingredient
- Approximately 2.5-day half-life
- Clearly marked product strength
The 25mcg strength is also an established Liothyronine tablet strength in U.S. prescription labeling.
The correct thyroid hormone strength should be selected from clinical need and thyroid laboratory results.
A higher strength does not mean better treatment.
Benefits and Product Features of T3 25mcg
The main benefit of T3 25mcg is thyroid hormone replacement when Liothyronine is medically appropriate.
Supports Thyroid Hormone Replacement
Liothyronine can replace T3 when thyroid hormone levels are inadequate.
Fast Thyroid Hormone Activity
T3 has a relatively rapid onset of action compared with T4.
Defined 25mcg Strength
Each tablet contains a consistent 25mcg Liothyronine strength.
100-Tablet Bottle
American Brand provides 100 tablets in each bottle.
Oral Tablet Format
No injection equipment is required.
Established Active Ingredient
Liothyronine has well-documented medical uses and pharmacology.
T3 should not be used as a general fat burner or weight-loss drug.
MedlinePlus specifically warns that thyroid hormones should not be used to treat obesity in people with normal thyroid function because serious or life-threatening toxicity can occur.
T3 25mcg Dosage and Product Strength
Each American Brand tablet contains Liothyronine 25mcg.
The supplied product information lists:
Dosage: 25–75mcg per day
This range closely matches the usual adult maintenance range described in current Liothyronine prescribing information.
For hypothyroidism, current labeling gives 25mcg once daily as an adult starting dose. The usual maintenance range is 25–75mcg once daily.
However, this is medical prescription information.
It should not be treated as a self-directed bodybuilding or weight-loss dose.
Liothyronine dosing must be individualized.
Factors can include:
- Age
- Cardiovascular health
- Thyroid condition
- Other medicines
- Laboratory results
- Clinical response
Older adults and people with heart disease may require much lower starting doses.
The prescribed directions should always take priority.
T3 25mcg Half-Life
American Brand lists an active half-life of 2.5 days.
This is supported by current prescription pharmacokinetic information.
DailyMed states that the biological half-life of Liothyronine is approximately two and a half days.
T3 has a shorter half-life than T4.
One reason is that T3 is less strongly bound to serum proteins than Levothyroxine.
This also contributes to its faster availability in body tissues.
Half-life should not be used alone to decide how often to take the medicine.
Dose timing should follow the prescription.
Possible T3 25mcg Side Effects
T3 25mcg can cause side effects when thyroid hormone levels become too high.
Possible effects include:
- Rapid heartbeat
- Irregular heartbeat
- Chest discomfort
- Nervousness
- Tremor
- Excess sweating
- Heat sensitivity
- Headache
- Difficulty sleeping
- Diarrhea
- Muscle weakness
- Unintended weight loss
MedlinePlus specifically lists nervousness, sweating, heat sensitivity, weight loss, and serious heart-related effects such as rapid or irregular heartbeat.
The supplied American Brand profile lists HBR as low.
That wording needs care.
Excess thyroid hormone can increase heart rate and cardiovascular stress. Patients with existing heart disease may need lower starting doses and closer monitoring.
The supplied “Hepatotoxicity: None” is also too absolute.
Liothyronine is not generally considered a major hepatotoxic medicine, but no medicine should be described as having zero risk.
Where to Buy T3 25mcg
Customers may search for T3 25mcg, Liothyronine 25mcg tablets, or T3 100 Tablets.
American Brand provides this product with:
Brand: American Brand
Product: T3
Active Ingredient: Liothyronine
Strength: 25mcg
Quantity: 100 Tablets
Classification: Thyroid Hormone
Customers can review current availability through the GainBuilt Fitness Shop.
You can also browse additional manufacturers through the GainBuilt Fitness Brands section.
Liothyronine is a prescription thyroid medicine.
Before purchase, confirm the active ingredient, strength, tablet quantity, and applicable prescription requirements.
For independent medical information, see MedlinePlus Liothyronine Drug Information and DailyMed Liothyronine Prescribing Information.
Frequently Asked Questions About T3 25mcg
1. What is T3 25mcg?
T3 25mcg is an oral thyroid hormone product containing 25mcg of Liothyronine per tablet.
2. How many tablets are in one bottle?
Each American Brand bottle contains 100 tablets.
3. Is T3 25mcg an anabolic steroid?
No. Liothyronine is not an anabolic steroid. It is a synthetic thyroid hormone.
4. What is the half-life of T3?
Liothyronine has a biological half-life of approximately 2.5 days.
5. Can T3 be used for weight loss?
Liothyronine should not be used for obesity or weight loss in people with normal thyroid function. Serious or life-threatening toxicity can occur.
Check T3 25mcg Availability
Review T3 25mcg (100 Tablets) – American Brand for complete product information.
Each tablet contains 25mcg of Liothyronine. One bottle provides 100 tablets.
Check current products in the GainBuilt Fitness Shop or browse the Brands section.
For trusted medical reference, review MedlinePlus Liothyronine Information and DailyMed Liothyronine Information.






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