Side effects of testosterone enanthate include symptoms of masculinization like acne , increased hair growth , voice changes , and increased sexual desire .  The drug is a synthetic androgen and anabolic steroid and hence is an agonist of the androgen receptor (AR), the biological target of androgens like testosterone and dihydrotestosterone (DHT).   It has strong androgenic effects and moderate anabolic effects, which make it useful for producing masculinization and suitable for androgen replacement therapy .  Testosterone enanthate is a testosterone ester and a long-lasting prodrug of testosterone in the body.    Because of this, it is considered to be a natural and bioidentical form of testosterone. 
It shall be noticed, that in men, approximately 5% of testosterone undergoes 5α-reduction to form the more potent androgen, dihydrotestosterone (DHT), also known as androstanolone. From another side approximately % of testosterone is converted into estradiol (the primary female sex hormone) by aromatase an enzyme expressed in the brain, liver, and adipose tissues. Hence, don`t forget to take precautions to avoid respective side effects. Thereof we recommend to perform blood works and take aromatase inhibitors on cycle (if required, anastrozole preferably) and SERMs (clomifene, toremifene) during post cycle therapy (PCT).
This drug was first produced in 1964 by a company called Searle. It was designed to be a safe and mind anabolic steroid and in low doses was well tolerated by women and children. Oxandrolone is a Class I anabolic, mildly androgenic steroid, which makes it safe to use in many cases. This drug has been used for anything from, burn victims to treatment of osteoporosis as it provides calcium to the body which will aid in bone regeneration. However in 1989 this drug was discontinued by Searle Laboratories partly due to the illegal use among bodybuilders. Around 6 years later Bio-Technology General Corp negotiated a deal with Searle where they would continue to manufacture the drug Anavar and supply it to BTG. This is when a press release went out stating its effects on involuntary weight loss and focused itself on HIV/AID’s wasting indications which were approved by the FDA where they were able to dictate the price by it being granted Orphan Drug status by the Food and Drug Administration.