The beta-2 agonist Clenbuterol is used for treating asthma, since it is a bronchodilator, in many countries.
However, it is more commonly used to burn fat and increase energy in a bodybuilding cutting cycle.
There are many different ways to run a Clenbuterol cycle, depending on your particular needs.
Clen cycle dosages generally start low and increase gradually to prevent tolerance. A cycle will usually last 4 – 8 weeks.
It stimulates the central nervous system much like adrenaline and has similar side effects to other drugs, like ephedrine, that work on the CNS in this manner.
Since it has a lengthy half-life (which could increase the risk of side effects), the FDA hasn’t approved clenbuterol for clinical use.
Many believe that the half-life of Clenbuterol is 48 hours, but it is actually 35 hours.
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Clenbuterol is available in 20 mcg tablets, 40 mcg, 50 mcg, 60 mcg, 100 mcg and 200 mcg pills as well as injectable, Ventipulmin (Clen Pump), inhalers, spray pens and liquid syrup forms, and in some areas it can be obtained as a bulk powder.
Doses vary, with the main variable being how those taking the drug deal with the side effects, but most men take 4 to 8 tablets a day, and women tend to take 2 to 4 tablets a day.
Watch as some brands may have Clen stacked with other ingredients – such as Ketotifen and Yohimbine – that can be important for measuring doses.
You can also see 0.025 mg or 0.0375 mg clenbuterol pills and other uncommon dosages available from some manufacturers.
Clenbuterol’s thermogenic effects wear off after about two months, and the body’s temperature will return to normal.
The anti-catabolic and anabolic effects dissipate after about 18 days.
When you consider the half-life of Clenbuterol, it makes the most sense for a Clenbuterol cycle to involve two weeks on followed by two weeks off and last for 12 weeks or less.
Uses may make use of Yohimbine or Ephedrine during off weeks.
Post-Cycle Recovery – Clenbuterol is often used to help with recovery after a steroid cycle.
It lets the user keep consuming the large portions of food needed without the worry of gaining fat. In addition, it enables users to maintain training intensity and greater amounts of strength.
When used in this manner it should be with a diet that is generally on par with that of on-cycle.
Fat Burning and Weight Loss – Clen is most commonly used to reduce fat, though it can also increase size, strength, vascularity and muscle hardness while maintaining a deficit of calories.
In order to lose the most fat possible, T3 should be stacked with Clenbuterol during your cycle.
When used for this purpose a diet consisting of low fat, moderate carbs and high protein in the rations of 0.25:0.5:1.5 per pound of bodyweight is best.
Steroid Alternative – Clen has properties similar to a mild steroid, and is used by bodybuilders who don’t use anabolic steroids to improve lean body mass, muscle hardness and strength.
When used for this purpose a moderate fat, moderate carbohydrate and high protein diet works well.
Performance Enhancer and Stimulant – Clen may work as a stimulant, but since it has a reduced half-life, ECA is probably a better option for this usage.
When used for this purpose a diet including carbohydrates must be followed to make use of the stimulating properties. A ketogenic diet will not be effective.
Clen cycle use must involve the same precautions necessary when using Ephedrine, though many users think that Clen is less harsh than ECA stacking.
Clenbuterol stacking must not be done with additional central nervous system stimulants like Yohimbine and Ephedrine, since this kind of combination isn’t necessary and may be dangerous.
Prior to working out users can also consume a moderate amount of caffeine to provide an additional energy burst.
Some people use Clen right after their bulking cycle as a PCT agent, but there is an argument among bodybuilders as whether this is a good idea or not. You can decide for yourself when to take your cycle, but if you want to protect your muscle gains, it may be better to wait a few weeks after bulking up and strength training.
What do you need to do in order to prevent side effects on a Clen cycle for bodybuilding?
The majority of Clen users who have severe side effects that cause them to discontinue using the drug are those who begin a cycle with a high dose.
Side effects should become less of a problem after 3 to 4 days. Someone using Clen for the first time shouldn’t use over 40 mcg on day one. For women, this starting dose is usually taken at 20 mcg.
Add a tablet each day unless side effects become intolerable. You should max out at 100 mcg per day for your first cycle. Some people push it to 120 mcg, 140 mcg or 160 mcg, but this is dangerous and can cause more harm than good.
For beginners, the typical Clenbuterol cycle length is two weeks, though some may use a one week, three week, four week or a ten day cycle instead.
A first-time two-week Clenbuterol cutting cycle may look like this:
At any point in this cycle, don’t increase the dosage if the side effects become intolerable. It isn’t essential to taper, but some users find that it helps them gradually readjust to normality.
Remember that Clenbuterol HCL has a long half-life, so it will stay in your system for half a day from when you take it.
That means you should take your Clenbuterol dosage in the morning or very early afternoon if you are working out later in the day. You should not take this stimulant after dinner as it could give you insomnia.
It is important to note that the most important part of any cutting cycle is your diet. You should follow a Clenbuterol diet plan that provides 500 – 1000 calories fewer than your total caloric expenditure for the day.
This is relatively easy to do when using this stimulant, since it completely blunts your appetite.
The beginner’s cycle is a good way to try this fat burner for the first time, but most bodybuilders take this slimming agent in a stack with synergistic compounds.
This can help users achieve greater fat loss in a shorter period of time or may be done to protect lean muscle mass after a muscle building cycle.
Some of the most effective Clenbuterol cycle stacks will include a combination of these other ingredients:
Of these, one of the most popular for male bodybuilders is combining Clenbuterol with T3 (Cytomel, Tertroxin, Liothyronine).
T3 (Triiodothyronine) is the name of the thyroid hormone used to regulate metabolism in the body. It sets your basal rate of metabolism by determining your core body temperature and heart rate set-points.
When you have low levels of T3 or its pro-hormone T4 in the body, you may be diagnosed with hypothyroidism, which is often associated with weight gain.
Administering T3 is known to promote weight loss because it increases energy metabolism in your body, affects growth and development and increases the effects of the catecholamine system.
When you combine Clenbuterol with T3 or Cytomel, you can effectively increase the rate at which the body consumes oxygen and energy, resulting in more calories being burned.
T3 also increases the rate of protein synthesis and increases the rate of lipolysis (fat breakdown) in the body.
T3 is known to potentiate the effects that beta-adrenergic receptors have on glucose metabolism and glycogen breakdown. Since Clenbuterol functions as a Beta-2 Adrenergic agonist, this means you can increase the results from your clen cycle if you add T3 into your stack.
Below is an example cycle schedule of a Clenbuterol/T3 stack used by male bodybuilders.
Clenbuterol Cycle Chart for Male Fat Loss
|Day 1||40 mcg||50 mcg|
|Day 2||60 mcg||50 mcg|
|Day 3||80 mcg||75 mcg|
|Day 4||100 mcg||75 mcg|
|Day 5||100 mcg||75 mcg|
|Day 6||120 mcg||100 mcg|
|Day 7||120 mcg||100 mcg|
|Day 8||100 mcg||125 mcg|
|Day 9||80 mcg||125 mcg|
|Day 10||60 mcg||125 mcg|
|Day 11||40 mcg||125 mcg|
|Day 12||Off||125 mcg|
|Day 14||Off||125 mcg|
|Day 14||Off||125 mcg|
|Day 15||Off||125 mcg|
|Day 16||Off||125 mcg|
|Day 17||Off||125 mcg|
|Day 18||Off||100 mcg|
|Day 19||60 mcg||100 mcg|
|Day 20||60 mcg||75 mcg|
|Day 21||80 mcg||75 mcg|
|Day 22||100 mcg||75 mcg|
|Day 23||120 mcg||50 mcg|
|Day 24||120 mcg||50 mcg|
|Day 25||120 mcg||50 mcg|
|Day 26||100 mcg||25 mcg|
|Day 27||80 mcg||25 mcg|
|Day 28||60 mcg||25 mcg|
How should you cycle Clen if you are a woman for weight loss results? As mentioned earlier, females tend to use lower dosages for their Clenbuterol cutting cycles.
While a man may start their cycle with an initial dose of 40 mcg per day, some females start as low as 10 mcg per day and most take 20 mcg.
This may be different for women who have more lean muscle mass and a higher bodyweight, but any female who weighs 160 lb or less will not want to start with more than 20 mcg per day to guage their tolerance and limit side effects.
The typical ramp-up of dosages also is more gradual in most cycle schedules for female bodybuilders. Females tend to taper down more gradually as well.
Here is a standard Dosage Chart for a Women’s Clenbuterol-Only Cycle for Weight Loss:
Another option that many females choose to use is a Clenbuterol stack with either Anavar or Winstrol. Both of these are anabolic steroids that are safe for females and they may have synergistic effects for weight loss.
Anavar – sometimes called the “Girl Steroid” – works as an androgen receptor agonist, resulting in an increased rate of protein synthesis and and muscle growth.
It also boost energy levels and helps women work out harder and longer at the gym, which can be useful when trying to burn body fat. This steroid is relatively mild and does not cause the same sort of masculinizing side effects that other anabolic steroids do.
Winstrol works by binding to the androgen receptor as well, promoting anabolic activity in muscle tissues to facilitate an increased rate of protein synthesis.
Winstrol also has been shown to improve athletic performance, speed and workout stamina. It has mild androgenic characteristics and is used to get cut and ripped by bodybuilders before a competition, because it promotes increased vascularity, fat metabolism and helps muscles look hard and firm.
A small number of users do combine Anavar and Winstrol, but these are both oral steroids that can put strain on your liver. It is better to use one of these or the other for beginners
Some male bodybuilders stack Clen with testosterone or other androgenic anabolic steroids like trenbolone to get cut and ripped quickly.
Here is a basic Clenbuterol/Trenbolone/Testosterone cycle that is designed to last for 12 weeks:
Weeks 1 – 8:
Weeks 1 – 12:
Other variations of this cycle can include Trenbolone Acetate at 200 mg / week (50 mg every other day) and Testosterone Propionate at 100 mg / week (25 mg every other day).
Some people may not like this cycle because it uses injectable steroids. It is also possible to build an Oral-Only Clenbuterol cycle, but you do not want to stack too many oral steroids together at the same time without using N2Guard or some form of liver protective agent.
The antihistamine Ketotifen is safely used in some parts of Europe in the treatment of allergies and asthma.
It works by upregulating the sensitivity of the receptors that Clenbuterol targets in the body, helping to counteract some of the effects that cause tolerance to this drug.
When you take large doses of Clen for long periods of time on its own, the result is a down-regulation of beta-2 receptors in the body, causing you to become less sensitivie to the thermogenic effects of the fat burner.
Ketotifen is capable of increasing the effectiveness of beta-2 receptors that Clen makes less effective, allowing users to use Clen for as much as six to eight weeks at once.
The best Ketotifen and Clenbuterol HCL dosage is 2 to 3 mg daily, since higher dosages, such as the 10 mg contained in “Superclen,” often has the side effect of drowsiness. The dosage must also be adjusted to account for the increased effectiveness of Clen.
The disadvantage of this addition is that it has the potential to bring on extreme hunger for some users, which isn’t helpful when trying to lose weight.
Ketotifen should always be used at the end of the day because it causes sleepiness (like other anti-histamine drugs). This can also help to prevent insomnia linked to Clenbuterol use.
Note: Some people use Benadryl instead of Ketotifen in their cycle. They do have similar effects, but most bodybuilders prefer generic ketotifen fumarate tablets instead.
What other supplement should you take when using a Clenbuterol cycle?
You must take 3 to 5 g of Taurine each day when taking Clenbuterol because it depletes the body’s taurine levels, making the liver incapable of converting T4 to T3.
Taking Taurine also enables the user to avoid painful muscle cramping and rebound effects, so it is a necessity.
Many users experience severe muscle cramps and tremors during cardio when on a Clen cycle. Adding in a dosage of Taurine can eliminate this side effects for most users.
It is advised that cardio workouts should be done at a steady pace instead of routines with a HIIT style.
Don’t consume your Clen cycle dosage after four in the afternoon, and drink one and a half to two gallons of water each day while taking it.
It is also advised to avoid alcohol during your cycle as this can counteract some of the fat burning effects of Clenbuterol, as well as providing unnecessary calories that may make it harder to drop body fat.
While this drug does not have harmful effects on your liver (because it is not metabolized by the liver, unlike other oral steroids), it is still a good idea to avoid drugs and alcohol when taking your cycle.
How much fat can you lose in two weeks on a Clenbuterol cycle? This will of course depend on many different factors such as how much excess body fat you currently have to lose, your diet plan and your workout regimen.
Ephedrine boosts metabolism by 2 to 3% while Clenbuterol increases metabolism by 10%, as well as raising the temperature of the body by several degrees.
Clenbuterol is the best drug for burning fat, though most people won’t ever find out due to the risks it carries.
Ephedrine is anti-catabolic, but the fact that it has a short half-life decreases its effectiveness.
Clenbuterol does have a greater risk of side effects compared with an ephedrine/ECA stack,.
Though it doesn’t involve the crash common with ECA, and most find that it doesn’t affect the sex drive or prostate as much.
This may have something to do with the short time span involved in a Clenbuterol cycle.
Never use and ECA stack or Ephedrine diet pills at the same time as Clen as this can put too much stress on the heart. These drugs are sometimes cycled with each other, but you should always leave a few days between them to let it get out of your system.
Side effects from using a Clenbuterol Cycle can involve the following, though this list is not conclusive.
Some individuals may experience no side effects at all while others may see serious problems.
The best way to control the occurrence of negative effects is by using a safe dose and by listening to your body:
The main side effects people deal with are an increase in blood pressure, headaches, nervousness and muscle cramping.
Avoiding muscle cramps is possible with an increase in water intake (1 ½ to 2 gallons each day), consumption of oranges and bananas or potassium supplementation (200 to 400 mg each day prior to sleep without food), and Taurine supplementation (3 to 5 g).
To prevent headaches, simply take Extra Strength Tylenol as soon as pain begins while on your Clenbuterol Cycle.