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. 
All anabolic steroids suppress natural testosterone production. However, the rate of suppression often varies greatly from one steroid to the next. Although it does suppress natural testosterone production, Primobolan’s rate of suppression is much less dramatic than many anabolic steroids. In a therapeutic plan, it is actually possible to keep the total rate of suppression below 50%. This could be low enough to keep some from falling into a low level condition despite the reduction. However, performance level doses will be another story. Dramatic suppression is all but assured with such doses making the inclusion of exogenous testosterone extremely important. Men who do not include exogenous testosterone will more than likely fall into a low testosterone condition. Not only does this carry numerous possible bothersome symptoms, it is extremely unhealthy. Women, despite needing testosterone will not have a need for exogenous therapy when using Primobolan.
Once the use of Primo and all anabolic steroids has come to an end, natural testosterone production will begin again. You will find this is one of the easiest steroids to recover from when it comes to testosterone production. Most men are encouraged to implement a Post Cycle Therapy (PCT) plan once use is discontinued. This will speed the recovery process up. It will, however, not return you to normal on its own. This will still take time. However, a PCT plan will ensure you have enough testosterone for proper bodily function while your levels continue to naturally rise. Those who do not implement a PCT plan, while they may recover it will take far longer. There’s really no reason to forgo the PCT process if you’re going to be off cycle for any decent length of time.
An important note on natural testosterone recovery. Natural recovery assumes no prior low testosterone condition existed. It also assumes severe damage was not done to the Hypothalamic-Pituitary-Testicular-Axis (HPTA) through improper steroidal supplementation practices.
However, in December 2004 the United States the 14-member Food and Drug Administration (FDA) advisory committee, plus voting consultants, for Reproductive Health Drugs unanimously rejected Procter and Gamble's fast-track request for Intrinsa citing concerns about off-label use . In Canada, post-menopausal women have been able to obtain government-approved testosterone treatment since 2002. In Australia, post-menopausal women can use Organon testosterone implants which have to be surgically inserted and last from three to six months.