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Equipoise: How Does it Work? Benefits & Side Effects


Equipoise or Boldenone Undecylenate is a steroid usually given to horses. Humans also use it illegally to build muscle mass.

How does EQ work? What benefits does it offer and are there any side effects associated with its use?

The following article will try to answer these questions. So if you are considering using this anabolic steroid I would highly recommend that you continue reading.[toc]

What is Equipoise?

Equipoise is similar in chemical structure as Dianabol, but with one major difference.

Dianabol is 17AA, making it suitable for oral use, but only has a short but effective half-life of 8 hours because of it.

Equipoise, on the other hand, does not have 17AA but instead has a long undecylenate ester chain attached instead.

This ester chain makes Equipoise very oil soluble. When taken the enzymes in your liver will remove this ester chain. This allows the androgen receptors to interact with your muscle cells.

History of Equipoise

Swiss chemical company Ciba reportedly patented Boldenone in 1949, after which time they created other esters that included Boldenone Undecylenate.

This strain was originally marketed as Parenabol and was used clinically in the late 1960s and early 1970s. It was discontinued in the late 1970s.

After this discontinuation, the American pharmaceutical company Squibb started to market Boldenone Undecylenate under the brand name Equipoise, aimed primarily at horses.

Potential Benefits of Equipoise

Originally created to treat muscle wasting diseases like osteoporosis. Equipoise nowadays is used primarily on horses to increase lean muscle mass.

This is commonly why EQ is used by humans, in an effort to build lean muscle, which it is quite effective at doing. Although not as effective as other steroids like Deca Durabolin, Anadrol and Dianabol.

As Equipoise helps to increase appetite it is often used during the bulking phase.

Increased strength is another benefit, and due to the long time that EQ stays in your system, there is also a notable increase in muscle endurance and athletic performance.

Equipoise is often used as a cutting steroid and is useful for helping ensure you do not lose those hard-earned muscle gains while you are in a calorie deficit.

To sum things up, using Equipoise will help you experience the following benefits:

  • Lean muscle gains
  • Increased appetite
  • Better muscle endurance
  • Improved athletic performance
  • Maintain muscle mass

Possible Side Effects of Equipoise

Even though Equipoise is a well-tolerated steroid, its use does not come without any risk.

Using EQ could potentially cause the following side effects to occur:


Even though Equipoise does not aromatise heavily, it is still a potential side effect that could result in gynecomastia occurring. Plus possible water retention and high blood pressure.

To combat this aromatisation it is recommended that you take a SERM alongside EQ, for example, Nolvadex or Arimidex.


As Equipoise is androgenic in nature, women who use this steroid may encounter symptoms of virilization. This can include the deepening of vocal cords and clitoral enlargement.

Other androgenic side effects of EQ include:

  • Acne
  • Male Pattern Baldness
  • Excessive Body Hair Growth

Low HDL (Good) Cholesterol

Equipoise has been shown to suppress HDL levels. However, this is not an extreme side effect and should be within tolerated levels for a healthy adult.

It is recommended that your diet includes cholesterol-friendly foods and plenty of omega fatty acids to combat these low HDL levels.

Natural Testosterone Suppression

Like all steroids, the use of Equipoise will suppress the natural production of testosterone within your body.

For this reason, EQ is often stacked with a Testosterone base. To ensure your testosterone levels remain high during your cycle.

Once your cycle comes to an end it is recommended that you undertake a PCT plan to ensure your natural testosterone production restarts. This may take a few months to get back to the levels before your cycle.

Equipoise FAQs

The following are questions submitted by our readers:

Who has been caught doping with Equipoise?

There have been numerous instances where athletes have been caught doping with Equipoise or Boldenone Undecylenate.

Here are a few of them:

  • Baseball: In 2010, Los Angeles Angels outfielder Reynaldo Ruiz received a 50-game suspension.
  • MMA: There are plenty of fighters who have been caught abusing this steroid. Including Stephan Bonnar and Josh Barnett.
  • Australian Football League: Justin Charles or Richmond FC was suspended for 16 matches after testing positive.
  • MLS: Jon Conway and Jeff Parke of the New York Red Bulls were suspended for 10 games in 2008 for violating the MLS drug policy.

Other names for Equipoise

Equipoise is a brand name of the veterinary drug Boldenone Undecylenate. Other brand names of this drug include:

  • Boldebal H
  • Sybolin
  • Ganabol
  • Ultragain
  • Equigan
  • Boldabol
  • Bolden
  • Boldabolic
  • Equibol
  • Equidex
  • Boldoject
  • Mitgan

Dosage information for Equipoise

Typically Equipoise is injected at least once a week.

Men will stick to a dosage of 400-600 mg, with women opting for a smaller dosage of 50-150 mg.

What should Equipoise be stacked with?

Equipoise is usually stacked with Winstrol (Stanozolol), Oxandrolone, Testosterone enanthate, Testosterone cypionate, and Testosterone propionate.

Which is better Equipoise or Deca?

Neither is better than the other, they just are better for different goals.

Equipoise is good for both bulking and cutting and has been shown to increase appetite, muscle hardness and vascularity.

Deca, on the other hand, is a better choice for those looking to bulk, although those who use this steroid do tend to experience more water weight than those who use EQ.

Can Equipoise be detected in urine test?

Equipoise has a half-life of 14 days. However, traces can remain in your system for many months or even years after use.

This means that using if you are an athlete then there is a high risk of being caught doping.

Is Equipoise legal to buy and use?

In many parts of the world, Equipoise is illegal to both buy and use. However, this is not the case in all countries.

Equipoise is classed as a Schedule III drug in the Controlled Substances Act. This means that possession or the use of it without a valid prescription would be a felony.

In the UK, Equipoise is neither illegal for personal use, nor is the importation of Equipoise for personal use illegal.

Canada has similar usage laws, but importing this steroid is illegal.

Where can you buy Equipoise?

Equipoise is available to buy online from the black market.

Unfortunately, EQ is one of the most commonly counterfeited steroids. Buying from one of these underground labs poses plenty of questions:

  • Is this Equipoise safe to use?
  • Is the EQ low quality?
  • Will you get scammed?

Would we recommend Equipoise?

Equipoise is certainly not the strongest steroid available, which means that the risk of encountering side effects is quite low.

However, there is still a risk attached to any steroid, which is why we cannot recommend it.

Buying Equipoise is also risky, with many counterfeit products available. Why would you want to potentially risk your health using a steroid that may only provide marginal mass gains?

Safe Alternative to Equipoise

Decaduro BottleOur chosen alternative is a supplement called Decaduro.

It is a legal alternative to Deca Durabolin, which has been shown to promote both strength and muscle gains.

Made from proven ingredients that include Wild Yam Root, Panax Ginseng, L-Arginine and Tribulus Terrestris. Decaduro offers the following user benefits:

  • Muscle and strength gains
  • More endurance and power
  • Higher energy levels
  • More testosterone
  • Less fatigue
  • Improved recovery

To read more about this legal steroid alternative I would recommend that you click the link below.

Previous Decaduro Review: Safe & Natural Alternative to Deca Durabolin

Next Foam Rolling for Bodybuilding: Reduce Soreness & Increase Mobility

0 thoughts on “Equipoise: How Does it Work? Benefits & Side Effects”

    1. No, it is not legal in the USA. Equipoise is classified as a Schedule III drug in the Controlled Substances Act. This means that its possession and use is considered to be a felony.

    1. Yes, Boldenone is an oil-based injectable anabolic steroid with the Undecylenate ester attached to it for a prolonged release rate and half-life. 🙂

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