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enclomiphene side effects

Enclomiphene Side Effects

Written By-Ruby Alice
 • Published: 17/07/2026
• Updated: 17/07/2026
Medically Reviewed by Dr. Aditya Shah
Dr. Aditya Shah
Trusted Source

Dr. Aditya Shah

Expert In Clinical Pharmacology And Drug SafetyView more

Enclomiphene Side Effects: Safety, Risks & Warning Signs

If you are experiencing fatigue, mental fog, and the lazy sensation of low testosterone, chances are you have already considered your options. The most popular way of dealing with TRT is the classic one; however, the main drawback of this method is the halting of natural sperm production by the body, as well as testicular atrophy, which will scare off the majority of men. Let us introduce you to Enclomiphene Side Effects.

Being a SERM, Enclomiphene citrate acts in an extremely efficient way in increasing testosterone levels without impairing the male’s ability to reproduce. Enclomiphene blocks the estrogen receptors in the brain, thus fooling your body into releasing more LH and FSH hormones, resulting in increased testosterone production by the testicles. 

However, there is no substance that affects the hormones of humans that does not carry some form of drawback along with its benefits. You need to know the whole story if you are opting for this treatment to make yourself more vibrant. Let’s go through its pros and cons.

Is Enclomiphene Safe?

The quick answer to this question is that, yes, generally speaking, with one important caveat for males: only under strict medical supervision. Another regulatory aspect should also be taken into account. Namely, Enclomiphene is not currently FDA-approved as an independent drug therapy.

Safety and Legality:

So, the short answer would be that: Yes, in most cases for men, however, with strict medical supervision. There is also an important regulatory point to remember here. Enclomiphene has not been approved by the FDA for clinical use on its own.

Enclomiphene is legal and easily accessible from licensed compounding pharmacies, prescribed by healthcare professionals on an off-label basis.

In assessing the safety profile of this drug, it would be pertinent to make comparisons with its parent compound, Clomiphene Citrate (Clomid).

Composition-wise safety aspect:

Clomid has two types of chemical compounds in its structure: zuclomiphene and Enclomiphene. The former acts as an estrogen, is stored in the body for about 30 days, and is responsible for the irritability and fatigue that men find unpleasant in Clomid.

With the extraction of pure Enclomiphene, which only has a half-life of 10 hours, the advantages of increasing testosterone booster can be enjoyed without any lingering emotional side effects. Studies have proven that pure Enclomiphene has a better safety profile compared to the conventional Clomid because it causes fewer adverse reactions.

Common Enclomiphene  Side Effects

Men generally have an excellent tolerance to enclomiphene. The occurrence of mild adverse effects within the first few weeks is often just part of the body’s adaptation process as your endocrine system switches to overdrive. 

Let us list out the most common side effects possible with Enclomiphene in a table for simple understanding-

Type of side effects What it feels like   How to get rid of it 
Headache and dizziness  Occurs in around 1 to 2% of users taking Enclomiphene. However, it is generally mild and goes away once the body adjusts to a hormonal baseline.   Take a rest and avoid doing major work, as there is a risk of injury or accident.  
Hot flashes  Having signs of warmth on the palms, face, throat, and chest area. It occurs due to the blocking of the estrogen receptors in the hypothalamus.   You can apply a cold compress or cold water to these areas.  
Nausea, stomach pain, stomach irritation  Having signs of bloating, feeling full all the time, which can even cause loss of appetite.   Consult with a doctor if you feel concerned about any of these issues; however, there is generally no need to take other medicines.  
Mild acne  It is typically more common as the rising testosterone levels cause the sebaceous glands underneath the skin to produce more oil.   It usually does not cause issues like irritation or swelling. However, if it gets very severe, you can consult with the doctors about using a suitable cream.  
Increased Estradiol levels  It can typically cause nipple sensitivity or fluid retention, causing edema in the patient. It occurs due to a sudden increase in testosterone, of which a part is converted into Estradiol, a form of estrogen.   Consult with the doctors if you see signs of swelling around the feet, legs, palms, and fingers, or feel excess fatigue and have pain in the nipple area upon slight touch.  

 

Serious Side Effects

Type of side effects What it feels like How to get rid of it
Vision changes  This can occur as with any other SERM treatment method. Patients report having blurred vision, seeing halos of light, or having floating vision. These vision disturbances usually occur because estrogen receptors are present in the retina. Avoid driving or doing any kind of work during this time. It is better to close your eyes and take complete bed rest. Also, consult with your doctor immediately if it continues for more than 2 days.
Blood clots  Being a kind of sexual hormone therapy, there is a risk of changing blood viscosity levels and clotting. As per research, there is a risk of having deep vein thrombosis or pulmonary embolism. Patients should inform their doctors about such health issues before starting a regular dose. 
Sudden mood changes  It typically happens due to the changes in estrogen levels in the brain. You can experience irritation, anxiety, and sudden bursts of anger. Consult with a doctor if you are a patient with existing psychological disorders like severe anxiety or depression.

Who Is at Higher Risk?

Enclomiphene is an extremely specific substance, meaning that it cannot be considered safe for all people. If you are among the groups described below, you should be very careful or avoid using enclomiphene:

  • Predisposing Factors for Clotting or cardiovascular diseases: Having any personal or family history of conditions such as deep vein thrombosis, pulmonary emboli, strokes, or heart disease increases your risk from taking SERMs.
  • Liver Dysfunction: The medication enclomiphene is metabolized by the liver, especially via the CYP2D6 pathway. Males who have liver disease or whose livers are dysfunctional are not able to metabolize the drug properly, causing a potential for toxicity. 
  • Pituitary or Intracranial Tumours: Since enclomiphene completely depends upon signalling powerful chemical messages via your brain’s hypothalamus-pituitary-gonadal HPG axis, individuals with a history of pituitary tumours or structural problems in the brain are unsuitable for it.
  • Primary Testicular Failure: Enclomiphene will work only when your testicles can produce testosterone, which is also known as secondary hypogonadism. In case you have a low level of testosterone due to injury to your testicles, chemotherapy, or primary hypogonadism that results from genetics, enclomiphene will not work, and forcing your body may give you side effects.

When to Call a Doctor

Safety demands forethought. You need to stop your protocol and report the problem to your overseeing physician in case of any of the following:

  • Sudden changes in vision such as blurred vision, double vision, or seeing floating dark spots.
  • Symptoms that may indicate deep vein thrombosis include swelling in one leg (calf), unusual redness, pain, and a throbbing feeling of heat.
  • Indicators of cardiovascular disease include sharp chest pain, difficulty breathing, or a fast, irregular heartbeat.
  • Extreme alterations in mental health, with depression or extreme rage.
  • Symptoms that suggest a taxed liver include yellowish skin or whites of the eyes (jaundice), dark urine, and severe pain in the right upper abdomen.

Enclomisign 50 Tablets

Enclomisign 50 is an oral medication that contains Enclomiphene Citrate. Always use this medicine exactly as directed by your healthcare provider. The appropriate dose depends on your individual health condition, hormone levels, treatment goals, and medical history.

Although Enclomisign 50 is supplied as a 50 mg tablet, this strength is not suitable for everyone. Your healthcare provider will determine the correct dosage after evaluating your condition and may adjust your treatment based on follow-up assessments and laboratory results.

If you have any questions about the dosage, how to take the tablets, or your overall treatment plan, consult your healthcare provider before changing or stopping your medication.

Long-Term Safety-Side Effects

Since enclomiphene was never officially submitted for FDA approval on a large-scale basis, data beyond a few years’ time are not well documented. The majority of the Phase III data that is available follows use for several months to one year.

Unlike the adverse effects seen in TRT, the use of enclomiphene does not lead to progressive testicular atrophy and does not result in a high red blood cell count (polycythaemia) like the one seen in exogenous testosterone usage.

Nevertheless, since enclomiphene is designed to function as a lifelong medication, your testosterone levels will naturally revert to your previous levels within a month after stopping the medication regular medical supervision cannot be overlooked.

For you to have optimum safety in the long-run, your physician needs to carry out routine blood tests at baseline, at the 6–8-week point, and then 6 months on. This will ensure that your total and free testosterone, LH and FSH hormones, along with Estradiol, liver function enzymes, and CBC levels are all in perfect harmony with one another.

Frequently Asked Questions (FAQs)

  1. Does Enclomiphen cause hair loss?

No. Unlike other forms of TRT that increase DHT levels and thereby lead to faster male-pattern baldness, enclomiphene will keep your testosterone at physiologically normal levels. 

  1. Can Enclomiphen cause gynecomastia?

Yes, but it is uncommon. Enclomiphene increases testosterone, which, in turn, will increase Estradiol by the process of aromatization. High levels of estrogen that are not being monitored may lead to gynecomastia. 

  1. How long can you use enclomiphene safely? 

It is known to be safe for several months according to the results of clinical tests, and other drugs from the same group are used for several years. However, due to the lack of information about its effect after several years, constant monitoring through blood tests is required. 

  1. Will enclomiphen cause a libido crash? 

Normally, no. There is usually an improvement in libido as a result of bringing the testosterone levels back to normal. However, there can be a libido crash if the Estradiol levels are too high. 

  1. Is enclomiphene hepatotoxic?

Even though enclomiphene is metabolized in the liver, it does not result in liver toxicity. Men with liver conditions or poor liver function should not use this medication. 

  1. Can enclomiphene lead to depression or anxiety?

Enclomiphene is far less prone to causing mood swings than Clomid, as it does not contain the estrogenic zuclomiphene isomer. The occasional changes in the estrogen receptors in the brain may sometimes lead to slight irritability. 

  1. What happens if you suddenly discontinue use of enclomiphene?

Enclomiphene is not a long-term solution. As it functions through the continuous blocking of estrogen messages from the brain, your hormones will revert to their low levels after just a few weeks. 

  1. Is enclomiphen less risky for use than conventional TRT?

Yes, for those who prioritize male fertility and don’t want their testicles to become smaller. It does not carry high risks of blood thickening (polycythaemia) and preserves the natural production of sperm cells. 

  1. Can clenbuterol make one gain weight or retain water?

It rarely causes significant weight gain. However, when your body converts the newly formed testosterone to estrogen in too great quantities, you may experience some water retention. 

  1. Can I purchase enclomiphene OTC?

No. Enclomiphene is a powerful hormonal modulator that can only be prescribed as a medication. It should be acquired legally from a healthcare professional and formulated at a pharmacy. 

Ruby Alice

Dr. Ruby Alice

Expert in Clinical Neurology And Drug Safety Hello Everyone, I am Dr. Ruby Alice. I'm highly qualified Clinical Neurologist with a Ph.D in Neurology at Columbia University in the City of New York. Expertise: As an expert in drug information, I have a wealth of experience Department of Neurology, Clinical...
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