Can Taking Clenbuterol Help Build Muscle?

Updated: Jan 28

When it comes to building muscle, it's no secret that one must intake protein before and after gym but most importantly a good pre-work out to help perform at the highest level possible. See why many celebrities and athletes choose to go with clen over all non-FDA regulated pre- workout you would find at your local GNC. The following were trial conducted ....

A Clenbuterol Trial on Bicep Muscles

Clenbuterol’s effect on muscle gain was tested in this clinical trial [2] at the Hand Surgery Department of

Huashan Hospital, Fudan University in Shanghai. The research is titled “Randomized, Double-Blind, and

Placebo-Controlled Trial of Clenbuterol in Denervated Muscle Atrophy”. In layman’s terms, a group of

researchers ran a study on 71 eligible patients in their twenties who had muscle-tissue damage to their

bicep from trauma such as a motorcycle or construction accident (the trauma is the ‘denervated muscle

atrophy’ component of the title). The trial was randomized and placebo-controlled in that half of the

patients were randomly selected to be given clenbuterol over three months while the other random half

were given a placebo. The trail was double blind in that neither the researchers nor the doctors knew

which patients were the clenbuterol or control group. Results were monitored with the use of

identification numbers.

Clenbuterol and Muscle Gain

The patients in the clenbuterol group were given 120 micrograms of clenbuterol (60 micrograms twice a

day) over a 3-month period. Tests on the bicep muscle were run before and after the trial on both the

clenbuterol and placebo groups, including a biopsy of the muscle tissue to examine the fibers. The

researchers found clenbuterol to be extremely effective in retarding muscle atrophy (in this case, of the

bicep after injury). The decreases in muscle-fiber sizes were a staggering 60% greater in the placebo-

controlled group. The study concluded with the following finding:

“It is reported that clenbuterol, at incremental doses from 120 to 720 μg/day over 12 weeks,

increases the mass and strength of the healthy skeletal muscles in man.”

Minimal Adverse Effects of Clenbuterol

Side effects such as jitters and insomnia are a common and probably often-exaggerated aspect of

clenbuterol use for fat loss and weight cutting. However, the Huashan Hospital study, in which patients

were given 120 micrograms a day for 3 months, reported very few. Out of all the patients in the trial,

only one felt “transient muscle tension 2 days after the clenbuterol administration.” The study also

reports that clenbuterol at 120 micrograms per day was:

“well tolerated and not associated with any obvious discomfort, except for one patient with

transient nervousness.”

Out of the thirty plus patients in the trial who were given clenbuterol, not one had the shakes so bad

that they couldn’t hold a pen or coffee cup – anecdotes you’ll often hear from bodybuilders who have

used clenbuterol. In terms of clenbuterol’s effects on the heart, the Huashan Hospital trial report stated

that clenbuterol appeared to have “the safest cardiac profile” among the known β 2  agonists and

reported the following in terms of other organs:

“In our study, no adverse effects on liver, kidneys, lungs or hematopoietic system were

observed after the 3-month intake of clenbuterol.”

Conclusions About Clenbuterol Use

While it is impossible to come to any definitive conclusion about the effects of clenbuterol use for

weight loss and cutting cycles, we can at least look to findings from reputable scientific and medical

sources. Many human trials of clenbuterol use are currently underway and we will report on them here

as the results are published and become available.

Run Your Own Trial with RRG

Purchase our liquid clenbuterol hydrochloride samples that are made in a

laboratory in the USA and ship within a week. You can buy clenbuterol with a credit card through a

secure PayPal checkout on our products page, or click on the images below.

1 month, 2 month and 3 month trials. The choice is yours.


1) LIINC Laboratory for Intelligent Imaging and Neural Computing. (2018, January 22). Effects of


2) Guang-Liang Jiang, 1,2  Yu-Dong Gu, 1  Li-Yin Zhang, 1  Li-Ying Shen, 1  Cong Yu, 1  and Jian-Guang Xu 1

(2011, June 1 – 2011, Aug. 15). Randomized, Double-Blind, and Placebo-Controlled Trial of

Clenbuterol in Denervated Muscle Atrophy. International Scholarly Research Notices Article ID


1 Department of Hand Surgery, Huashan Hospital of Fudan University, Shanghai 200040, China

2 Clinical Development, Neurology & Pain, R&D, Allergan Inc., 2525 Dupont Dr., Irvine, CA 92612,


#Clenbuterol #weightlifting #muscle #lean #shredded #fatburner #gym #preworkout


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