Clenbuterol HCL 40mcg (Clenbuterol Hydrochloride)

Clenbuterol is a long-acting beta-2 adrenergic agonist.

It was developed in 1977 as a bronchodilator for asthma.

A bronchodilator relaxes the muscle around the airways.

Some countries approve it for asthma and airway obstruction.

The United States has never approved it for human use.

The FDA cites unacceptable cardiovascular and neurological risks.

Its only US approval is for airway obstruction in horses.

Many European countries also do not approve it for people.

Where it is approved, the daily dose is about 20 to 40 mcg.

That daily amount is usually split across two doses.

A Gearclen 40 mcg tablet therefore holds a full therapeutic day in one unit.

This strength is most commonly sold for physique and fat-loss use.

It is not a licensed weight-loss medicine anywhere.

It is not an anabolic steroid, though it is often sold alongside them.

Anti-doping bodies prohibit it in and out of competition.

Astralean 40 mcg binds to beta-adrenergic receptors on cell surfaces.

Those receptors sit on airway muscle, heart, fat and skeletal muscle.

Binding raises levels of a messenger called cyclic AMP.

In the airways, higher cyclic AMP relaxes smooth muscle.

The airways widen and breathing becomes easier.

Beta receptors are present throughout the body.

The same signal stimulates the heart and nervous system.

That is the source of the serious cardiac side effects.

It also drives tremor, anxiety and insomnia.

The drug cannot be targeted selectively at fat tissue.

Oral bioavailability is about 70% to 80%.

The elimination half-life is roughly 25 to 39 hours.

That is very long for a stimulant drug.

Daily dosing therefore causes levels to accumulate.

Side effects often worsen over the course of repeated use.

The figures are reported in medical literature, not endorsements.

A 40 mcg tablet equals a whole therapeutic day in one unit.

Users seeking fat loss typically escalate well beyond that.

Escalation is where most reported hospital cases originate.

The long half-life means levels keep rising during a course.

Serious toxicity has been reported at relatively low doses.

Overdose causes fast heart rate, tremor and severe anxiety.

It can cause dangerously low blood potassium.

It can cause chest pain, abnormal heart rhythms and heart attack.

Rhabdomyolysis and cardiogenic shock have been reported.

Seizures and cardiac arrest have occurred.

There is no antidote for clenbuterol poisoning.

Hospital treatment is supportive and may need intensive care.

Call emergency services immediately after a suspected overdose.

It is taken only where a doctor has legally prescribed it.

The tablet is swallowed whole with water.

Doses are usually taken in the morning and early evening.

Late doses worsen insomnia because the drug is long-acting.

The prescribed dose must not be increased without medical review.

Blood potassium may need checking during treatment.

Heart rate and blood pressure should be monitored.

Any palpitations or chest discomfort must be reported at once.

It is never a substitute for a fast-acting reliever inhaler.

Treatment should be reviewed regularly by the prescriber.

Are allergic to clenbuterol or any other beta-agonist.

Have any form of heart disease.

Have an abnormal heart rhythm or a history of arrhythmia.

Have thickening of the heart muscle (cardiac hypertrophy).

Have had a heart attack, myocarditis or heart failure.

Have uncontrolled high blood pressure.

Have an overactive thyroid gland.

Have a phaeochromocytoma, a rare adrenal gland tumour.

Have low blood potassium that is not corrected.

Are pregnant, planning pregnancy or breastfeeding.

Are under 18 years of age.

Compete in any sport governed by anti-doping rules.

Are seeking weight loss or physique change.

Any heart condition, chest pain or palpitations.

Any family history of sudden cardiac death.

High blood pressure or low blood pressure.

Diabetes, since beta-agonists can raise blood sugar.

Any thyroid disorder.

Epilepsy or any history of seizures.

Kidney disease or liver disease.

Any anxiety disorder or difficulty sleeping.

Any history of eating disorder or compulsive exercise.

Any use of stimulants, fat burners or pre-workout products.

Any use of anabolic steroids or other performance drugs.

Any diuretic, laxative or potassium-lowering medicine.

All prescription, herbal and over-the-counter products you use.

Avoid coffee, tea, cola and energy drinks during use.

Caffeine adds directly to tremor and fast heart rate.

Avoid pre-workout supplements containing stimulants.

Avoid alcohol, which worsens dehydration and heart strain.

Maintain adequate fluid and electrolyte intake.

Restrictive dieting alongside use increases potassium loss.

Very low calorie diets raise the risk of cardiac events.

Clenbuterol has caused mass poisonings through contaminated meat.

Outbreaks have been reported in Spain, Portugal and China.

Is clenbuterol legal for human use in your country?

Do you hold a valid prescription from a licensed doctor?

Has a doctor examined your heart before treatment?

Do you know your baseline heart rate and blood pressure?

Has your blood potassium level been checked?

Are you taking any other stimulant of any kind?

Are you subject to any anti-doping testing?

Do you understand there is no antidote for overdose?

Is anyone aware that you are taking this substance?

A poison-centre series recorded 63 exposures between 2004 and 2012.

Cases rose from 3 in 2008 to 27 in 2012.

Hospitalisation was required in 84% of those patients.

The commonest reasons for use were bodybuilding and slimming.

One 21-year-old man suffered cardiac arrest.

In another series, potassium fell as low as 2.5 mEq/L.

Reported toxicity does not correlate reliably with the dose taken.

Insomnia and anxiety can persist after use has stopped.

Other beta-agonists such as salbutamol, salmeterol or formoterol.

Stimulants including caffeine tablets, ephedrine and pseudoephedrine.

Amphetamine-type substances and illicit stimulants.

Thyroid hormone, including T3 used in physique cycles.

Anabolic steroids, which add their own cardiac strain.

Other fat-burner or pre-workout products.

Diuretics, often called water tablets.

Corticosteroids such as prednisolone.

Theophylline, doxofylline and other xanthines.

Laxatives used regularly.

Digoxin, where low potassium raises toxicity risk.

Beta-blockers oppose the drug and may cause severe bronchospasm.

Monoamine oxidase inhibitors can cause dangerous blood pressure rises.

Tricyclic antidepressants increase cardiovascular effects.

Any medicine that prolongs the QT interval adds arrhythmia risk.

Stacking stimulants multiplies the strain on the heart.

Low potassium makes dangerous heart rhythms far more likely.

Dieting and diuretic use together compound that risk.

Clenbuterol has been found adulterating street heroin.

Those patients presented with chest pain and severe hypokalaemia.

Product purity from unregulated sources cannot be assumed.

Chest pain, pressure or tightness.

Pain spreading to the jaw, neck, shoulder or arm.

A very fast, chaotic or irregular pulse.

Severe breathlessness at rest.

Fainting, collapse or near-fainting.

Severe muscle pain with dark or cola-coloured urine.

A seizure or convulsion.

Severe weakness with cramping, suggesting low potassium.

Rapid breathing with confusion or extreme weakness.

Cold, clammy skin with collapse.

Any loss of consciousness.

Clenbuterol is an effective bronchodilator in the airways.

Several countries license it for asthma on that basis.

It raises resting energy expenditure in short-term studies.

It increases fat oxidation measured over hours.

It activates muscle growth pathways in laboratory models.

Muscle-building effects have been shown only in animals.

Human studies have not reproduced those benefits.

No trial establishes it as a safe or effective weight-loss agent.

No regulator anywhere licenses it for fat loss.

Short-term metabolic changes are not the same as fat loss outcomes.

The FDA judged the human safety risk unacceptable.

Cardiac toxicity is documented at relatively low doses.

Most reported hospital cases involve slimming or bodybuilding.

The long half-life causes accumulation during daily use.

Cardiac hypertrophy is a recognised long-term concern.

Unregulated products carry purity and dosing uncertainty.

Positive doping tests end sporting careers.

No antidote exists if serious toxicity develops.

Store at room temperature in a cool, dry place.

Keep tablets in the original blister or container until use.

Protect from direct sunlight, heat and moisture.

Do not store in the bathroom or near a sink.

Keep well out of sight and reach of children.

Clenbuterol is toxic to children at very small amounts.

Keep away from pets at all times.

Never transfer tablets into food or drink containers.

Never store tablets in unlabelled containers.

Never share this substance with another person.

Check the expiry date printed on the pack.

Do not use tablets that are chipped, discoloured or damp.

Do not flush unused tablets down the toilet.