Clenbuterol 40mcg – 50 Tablets by American Brand
Clenbuterol 40mcg by American Brand is an oral product containing 0.04mg of Clenbuterol per tablet. Since 0.04mg equals 40mcg, the bottle label and strength match each other. One bottle contains 50 tablets.
Clenbuterol is a beta-2 adrenergic agonist. It has bronchodilator activity and has been used for respiratory conditions in some countries. However, Clenbuterol is not FDA-approved for human use in the United States. U.S. Poison Control also warns that misuse for weight loss or performance enhancement can cause serious cardiovascular and metabolic toxicity. (poison.org)
The supplied product information lists a half-life of 36–48 hours. Human pharmacokinetic research has reported a plasma half-life of about 35 hours, making that general range reasonable. (pubmed.ncbi.nlm.nih.gov)
Customers can browse other products through the GainBuilt Fitness Shop and review available manufacturers on the Brands page.
What Is Clenbuterol 40mcg?
Clenbuterol 40mcg contains Clenbuterol as its active ingredient.
Each American Brand tablet contains:
- Active Ingredient: Clenbuterol
- Strength: 0.04mg = 40mcg per tablet
- Quantity: 50 Tablets
- Classification: Beta-2 Adrenergic Agonist
- Half-Life: About 35–48 hours
- Administration: Oral tablet
- Aromatization: Not applicable
- Water Retention: Not an estrogenic effect
Clenbuterol is sometimes incorrectly grouped with anabolic steroids.
It is not an anabolic steroid.
Its pharmacology is closer to other beta-adrenergic agonists. These compounds stimulate beta receptors and can affect the lungs, heart, nervous system, and metabolism.
Clenbuterol has bronchodilator effects. Yet it does not have FDA approval for treating human asthma or other human conditions in the United States. (poison.org)
The FDA has approved a Clenbuterol-containing veterinary product for certain horses, but its labeling specifically states that it is not for human use. (fda.gov)
How Does Clenbuterol 40mcg Work?
Clenbuterol 40mcg acts mainly as a beta-2 adrenergic receptor agonist.
Beta-2 receptors are found in several tissues.
When these receptors are stimulated, smooth muscle in the airways can relax. This creates a bronchodilator effect.
Clenbuterol can also stimulate the cardiovascular and nervous systems.
That is important because its effects are not limited to the lungs.
Possible systemic effects can include:
- Increased heart rate
- Tremor
- Nervousness
- Changes in blood pressure
- Increased blood glucose
- Reduced blood potassium
This explains why Clenbuterol misuse can become dangerous.
Poison Control reports toxicity involving rapid heartbeat, palpitations, tremor, anxiety, hypokalemia, seizures, heart attack, and cardiac arrest. (poison.org)
Clenbuterol also remains in the body for a relatively long time.
That long half-life can allow effects and adverse reactions to persist.
Why Review American Brand Clenbuterol 40mcg?
American Brand provides this product in a clearly marked oral tablet format.
The front label shows:
Clenbuterol 0.04mg
40mcg per tablet
50 tablets per bottle
This makes the product strength easy to identify.
The most important point is the unit conversion.
0.04mg = 40mcg.
Your supplied specification also includes “0.4mg/day.” That equals 400mcg, not 40mcg.
Those two figures should never be treated as interchangeable.
Because Clenbuterol can cause serious cardiovascular toxicity at relatively small amounts, the product page should avoid presenting a high-dose or cycle schedule as a recommendation.
For general brand comparison, customers can review the GainBuilt Fitness Brands section.
Clenbuterol 40mcg Product Features
American Brand Clenbuterol has several clear product characteristics.
40mcg Tablet Strength
Each tablet provides 40mcg of Clenbuterol.
This is the same as 0.04mg.
50-Tablet Bottle
Each bottle contains 50 oral tablets.
Oral Format
The product is supplied in tablet form.
No injection equipment is involved.
Long Half-Life
Clenbuterol stays in the body for a long period.
A human pharmacokinetic study estimated a plasma half-life of around 35 hours. (pubmed.ncbi.nlm.nih.gov)
Beta-2 Agonist Activity
Clenbuterol stimulates beta-adrenergic receptors rather than androgen receptors.
This is why it should not be classified as an anabolic steroid.
No Aromatization
The supplied “Aromatization: Yes” specification should be corrected.
Clenbuterol does not convert into estrogen.
A better product specification is:
Aromatization: Not applicable
Clenbuterol 40mcg Dosage Information
Each tablet contains 40mcg of Clenbuterol.
The information supplied with the product lists:
40–80mcg per day
and
0.4mg per day
These figures are not equivalent.
0.4mg = 400mcg.
That is ten times 40mcg.
For that reason, I would not publish “0.4mg/day” as a dosage recommendation.
There is another important issue.
Clenbuterol has no FDA-approved human dosage in the United States, because it is not approved for human use there. Poison Control specifically notes that there is no standard U.S. human dose recommendation. (poison.org)
The supplied 6–8 week cycle should also not be presented as a recommended cycle.
That would turn general product information into a self-directed performance or weight-loss regimen.
For the product page, a safer and more accurate specification is:
Tablet Strength: 40mcg (0.04mg)
Human U.S. Dosage: No FDA-approved dosage
Cycle: No FDA-approved bodybuilding or weight-loss cycle
Clenbuterol Half-Life
The supplied American Brand information lists an elimination half-life of 36–48 hours.
Published human research provides useful support for the lower part of that range.
In a pharmacokinetic study, healthy volunteers received Clenbuterol and researchers estimated its plasma half-life at about 35 hours. (pubmed.ncbi.nlm.nih.gov)
This is a long half-life.
It means Clenbuterol can remain in the body well beyond the time the tablet is taken.
It also means repeated exposure can lead to accumulation.
The same human study found that blood levels reached a plateau after repeated administration over several days. (pubmed.ncbi.nlm.nih.gov)
A practical product specification is therefore:
Elimination Half-Life: Approximately 35–48 hours
Half-life should not be used to design a personal dosing schedule.
Possible Clenbuterol Side Effects
Clenbuterol can produce significant side effects.
Possible adverse reactions include:
- Rapid heartbeat
- Palpitations
- Tremor
- Anxiety
- Nervousness
- Headache
- Sweating
- Chest pain
- Low potassium
- High blood glucose
- Abnormal heart rhythm
Severe toxicity can include seizures, heart attack, or cardiac arrest. (poison.org)
The supplied specification says:
HBR: No
That should be corrected.
Clenbuterol can increase heart rate and can cause blood-pressure changes. The FDA’s veterinary human-warning information specifically notes significant cardiovascular effects, including increased pulse and blood-pressure changes after accidental human exposure. (fda.gov)
The supplied “Hepatotoxicity: Low” is also not the main safety issue.
Cardiovascular and electrolyte toxicity are much more important concerns.
Acne, water retention, and aromatization are steroid-oriented specifications and are not useful primary safety markers for Clenbuterol.
Where to Find Information About Clenbuterol 40mcg
Users may search for Clenbuterol 40mcg, Clenbuterol 0.04mg, or Clenbuterol 50 tablets.
For this American Brand product, the label shows:
Brand: American Brand
Product: Clenbuterol 0.04
Strength: 40mcg per tablet
Quantity: 50 Tablets
Classification: Beta-2 Adrenergic Agonist
Because Clenbuterol is not FDA-approved for human use in the United States, I would not position this section as a U.S. “Buy Clenbuterol Online” sales CTA.
Customers can instead browse the general GainBuilt Fitness Shop or contact GainBuilt Fitness Support for product-status information.
For independent safety information, review the Poison Control Clenbuterol Guide.
Frequently Asked Questions About Clenbuterol 40mcg
1. What is Clenbuterol 40mcg?
Clenbuterol 40mcg is a beta-2 adrenergic agonist product. Each American Brand tablet contains 0.04mg, which equals 40mcg.
2. How many tablets are in one bottle?
Each bottle contains 50 tablets.
3. Is Clenbuterol an anabolic steroid?
No. Clenbuterol is not an anabolic steroid. It is a beta-adrenergic agonist with bronchodilator activity.
4. What is the half-life of Clenbuterol?
Human pharmacokinetic research estimated a plasma half-life of about 35 hours. Product references often describe a broader range near 36–48 hours. (pubmed.ncbi.nlm.nih.gov)
5. Is Clenbuterol approved for human use in the USA?
No. Clenbuterol is not FDA-approved for human use in the United States. (poison.org)
Review American Brand Clenbuterol 40mcg
Review Clenbuterol 40mcg (50 Tablets) – American Brand for product strength and packaging information.
Each tablet contains 40mcg, or 0.04mg, of Clenbuterol. One bottle contains 50 tablets.
For other available products, browse the GainBuilt Fitness Shop or Brands section.
For independent safety information, review Poison Control’s Clenbuterol information and the published PubMed pharmacokinetic study.






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