Tadalafil is a popular medicine used for erectile dysfunction, also known as ED. It is commonly available under the brand name Cialis and in generic forms. The medicine is also prescribed to manage urinary symptoms linked to benign prostatic hyperplasia, or BPH.
One reason tadalafil is preferred over some other ED medicines is its long duration of action. Its effects may support erectile function for up to 36 hours, which is why it is often called the “weekend pill.” However, it only works when sexual stimulation is present.
Men who are planning to start a family may wonder whether tadalafil affects sperm count, sperm movement or their ability to father a child. Current evidence does not show that tadalafil commonly causes male infertility. However, some long-term studies have noticed small changes in sperm concentration.
The Mechanism of Action: Tadalafil and the Reproductive System
Tadalafil belongs to a group of medicines called PDE5 inhibitors. During sexual stimulation, the body releases nitric oxide, which helps relax the blood vessels around the penis. This allows more blood to enter the erectile tissue and supports a firm erection.
The medicine does not automatically create an erection or directly increase sexual desire. Sexual stimulation is still required for it to work.
Tadalafil may support erectile function for up to 36 hours. This longer working period can give couples more flexibility and reduce the pressure to plan intercourse at one exact time.
People who want to understand tadalafil-based medicines in more detail can read this guide explaining what Vidalista is and how it works.
Direct Effects of Tadalafil on Male Sperm Parameters
Male fertility depends on several sperm-related factors. These include sperm count, concentration, movement, shape and genetic quality. Researchers have studied whether regular tadalafil use affects these important measurements.
Spermatogenesis and Sperm Count
Spermatogenesis is the natural process through which the testicles produce mature sperm. A complete sperm-production cycle takes approximately two to three months.
Available evidence does not show that occasional tadalafil use stops this process. However, official tadalafil prescribing information mentions three long-term studies involving adult men.
A reduction in sperm concentration was observed in one study using 10 mg daily for six months and another using 20 mg daily for nine months. A separate six-month study using 20 mg did not find the same reduction. The reported differences were not considered clinically meaningful, but the long-term effect on actual pregnancy rates remains uncertain.
Therefore, tadalafil cannot be said to increase sperm count. At the same time, there is not enough evidence to describe prescribed use as a common cause of infertility.
Sperm Motility and Vitality
Sperm motility refers to the ability of sperm to move forward. Healthy movement is important because sperm must travel through the female reproductive system to reach and fertilise an egg.
Human studies have not consistently found serious reductions in sperm motility after tadalafil use. Some laboratory research suggests that PDE5 inhibitors may influence sperm movement, but the results vary depending on the dose, treatment period and existing fertility problems.
Tadalafil should not be taken for the purpose of improving sperm movement. Even when a study reports stable or improved motility, this does not prove that the medicine can treat male infertility.
Sperm Morphology and DNA Integrity
Sperm morphology refers to the size and shape of sperm, including its head, middle section and tail. DNA integrity describes the quality of the genetic material carried by the sperm.
Current human evidence has not clearly linked prescribed tadalafil use with harmful changes in sperm shape or genetic quality. There is also no strong proof that it causes genetic mutations in sperm.
However, research in this area remains limited. Semen quality can also be influenced by smoking, alcohol, obesity, diabetes, heat exposure, infections, age, stress and other medicines.
Note: Tadalafil does not directly produce sperm, increase sperm count or cure infertility. Its main purpose is to improve erectile function.
Indirect Positive Impacts on Fertility
Although tadalafil is not a fertility medicine, it may indirectly support couples trying to conceive.
Reducing Performance Anxiety
Trying to have intercourse during a partner’s fertile period can create pressure. Stress and fear of failure may make it difficult for some men to maintain an erection.
Because tadalafil has a long working window, intercourse may feel less planned and more natural. This may reduce performance anxiety and improve sexual confidence.
Supporting Regular Intercourse
Pregnancy is more likely when couples have intercourse regularly during the fertile window. Erectile dysfunction may reduce the frequency of intercourse or make successful ejaculation difficult.
By supporting erections for up to 36 hours, tadalafil may provide greater flexibility. A man does not need to take another tablet before every attempt during this period.
For a clearer explanation of its role in sexual confidence, readers can explore how tadalafil helps treat erectile dysfunction and supports confidence.
Improving Erectile Blood Flow
Healthy blood flow is important for normal erectile function. Tadalafil relaxes blood vessels and supports circulation to the penis during sexual stimulation.
This benefit may make intercourse possible for men whose fertility efforts are being affected by ED. However, improved blood flow does not automatically mean healthier sperm or guaranteed pregnancy.
Tadalafil’s Impact on Female Fertility
Tadalafil is not a standard medicine for improving female fertility. However, researchers have studied whether its blood-flow effects could help women with a thin uterine lining during IVF treatment.
One study investigated oral and vaginal tadalafil for improving endometrial thickness and pregnancy outcomes in women undergoing IVF. While the findings created research interest, this remains an experimental use rather than an established fertility treatment.
Women should not use a male ED tablet to improve fertility without specialist supervision. Its possible benefits, correct dose and safety during fertility treatment are still being studied.
Frequently Asked Questions
Can I take tadalafil while trying for a baby?
Tadalafil is not known to commonly cause infertility. However, some long-term studies found small reductions in sperm concentration. It should only be used at the prescribed dose.
Does tadalafil increase or decrease testosterone?
Tadalafil does not directly work by raising or lowering testosterone. Its main action is relaxing blood vessels and improving erectile blood flow.
Can tadalafil treat male infertility?
No. Tadalafil treats erectile dysfunction, not infertility. It may help when erection problems are preventing regular intercourse, but it cannot correct low sperm production or other reproductive conditions.
Does tadalafil increase sperm count?
There is no reliable evidence that tadalafil increases sperm count. Some long-term studies found small decreases in sperm concentration, although these changes were not considered clinically meaningful.
Can tadalafil improve the chance of pregnancy?
It may help indirectly by improving erections, reducing performance pressure and supporting regular intercourse during the fertile window. It does not guarantee conception.
How long does tadalafil remain effective?
Tadalafil may support erectile function for up to 36 hours. This does not mean an erection remains continuously present; sexual stimulation is still required.
