Does Tadalafil Lower Blood Pressure: Is It Risky?

Erectile Dysfunction (ED) is a sexual condition that affects around 322 million men globally. Tadalafil is an oral medication available under the brand name Cialis, formulated to treat this condition. It is a Phosphodiesterase Type 5 (PDE5) inhibitor that remains effective for around 36 hours. During sexual stimulation, Tadalafil enhances blood flow to the penis, helping achieve and sustain firm erections.

Because Tadalafil acts on blood vessels, some users wonder whether it can also lower blood pressure (BP). It can cause a mild dip from the normal BP range, which is around 120/80 mmHg in healthy men. This happens because Tadalafil blocks the PDE5 enzyme, relaxes smooth muscles, widens blood vessels, and improves blood flow.

However, the same BP-lowering effect can become serious when combined with certain medicines, such as nitrates or certain blood pressure medications. This article explains whether Tadalafil lowers blood pressure, when this effect becomes dangerous, and what to keep in mind before using this ED pill.

Can Tadalafil lower blood pressure?

Yes, Tadalafil can slightly lower blood pressure as a side effect by relaxing blood vessels throughout the body. It can reduce systolic/diastolic blood pressure by about 1.6/0.8 mmHg while lying down and 0.2/4.6 mmHg while standing. This mild drop is usually not enough to cause severe symptoms in healthy men.

However, the effect can become more noticeable or severe if you already have Low Blood Pressure, are dehydrated, or take medicines that interact with Tadalafil. On the other hand, this mild BP-lowering effect can be useful in some men. A 2022 study reported that Tadalafil 5 mg may improve erectile function and support better blood pressure control in men with High Blood Pressure.

It may also help lower the risk of cardiovascular events, such as a heart attack, over time. Still, Tadalafil is not a standard High Blood Pressure medicine. Its main role is ED treatment, with BP-lowering effects secondary.

Tadalafil interactions that can cause Low Blood Pressure

Some medications and alcohol, in combination with Tadalafil, can trigger a dangerous drop in blood pressure, sometimes below 90/60 mmHg. The following combinations should either be avoided or a doctor must be consulted first before use:

●      Nitrates: Isosorbide Dinitrate, Nitroglycerin, and Isosorbide Mononitrate are used for chest pain (Angina). Combining them with Tadalafil can cause a sudden, severe BP drop, increasing the risk of fainting or collapse.

●      Alpha-blockers: Tamsulosin, Doxazosin, and Terazosin are used for High Blood Pressure or BPH. When taken with Tadalafil, they can cause dizziness, fainting, or sudden weakness, especially while standing.

●      Other PDE5 inhibitors: Avoid combining Tadalafil with Sildenafil, Vardenafil, Avanafil, or Udenafil. It does not improve results and increases side effects like Low Blood Pressure, dizziness, flushing, and prolonged erection.

●      CYP3A4 inhibitors: These include grapefruit juice and medicines like Ketoconazole, Itraconazole, Erythromycin, Clarithromycin, and Ritonavir. They can increase Tadalafil levels in the blood, raising the risk of side effects, including Low Blood Pressure.

●      Guanylate Cyclase stimulators: Riociguat and similar medicines also relax blood vessels. Taking them with Tadalafil can cause severe Hypotension and should be avoided unless a specialist advises otherwise.

●      Antihypertensives: Medicines for High Blood Pressure (antihypertensives) can add to Tadalafil’s BP-lowering effect. The risk is higher in older adults, dehydrated people, or those taking multiple BP medicines.

●      Alcohol: Excessive alcohol can widen blood vessels and lower BP. With Tadalafil, excess alcohol may increase dizziness, headache, nausea, fainting, and poor erectile response.

What to keep in mind before using Tadalafil

Tadalafil is effective for ED, but it is not suitable for everyone. Since it affects circulation, a doctor’s evaluation is important before use, especially for people with heart or blood pressure conditions.

●      Doctor’s consultation: Since Tadalafil is a prescription-only medicine, always consult a doctor before use. They will review your overall health and ED severity to adjust the dosage.

●      Health conditions: Avoid or use Tadalafil only if a doctor approves in case of a recent heart attack or a Stroke, unstable Angina, uncontrolled Low or High Blood Pressure, serious Arrhythmias (irregular heartbeat), or severe heart failure. Physical intimacy itself puts some strain on the heart, so cardiovascular safety should be checked before using ED medicine. Also, be cautious in cases of severe liver or kidney diseases.

●      Side effects: Common side effects of Tadalafil include headache, flushing, nasal congestion, indigestion, back pain, muscle pain, low blood pressure, and dizziness. Rare but serious effects include chest pain, fainting, sudden vision loss, and Priapism, a painful erection lasting more than 4 hours.

Symptoms of a severe fall in blood pressure

When Tadalafil is combined with medications discussed above or taken with certain underlying health conditions, it can lead to symptoms of Hypotension (Low Blood Pressure), which are:

●      Nausea

●      Fainting

●      Lightheadedness

●      Blurred vision

●      Fatigue

●      Weakness

Therefore, it is essential to discuss your complete list of medications and health history with a doctor before taking Tadalafil. It will help prevent significant, unwanted fluctuations in blood pressure. Also, consult a doctor immediately if you experience these symptoms.

Conclusion

Tadalafil, an oral ED pill, can slightly lower blood pressure by relaxing blood vessels, but the drop is usually mild and not enough to cause severe symptoms in healthy men. Additionally, this effect can help improve BP control in some men with High Blood Pressure, but Tadalafil is not a standard antihypertensive medication.

The main safety concern is Hypotension related to interactions, especially with nitrates, alpha-blockers, Riociguat, CYP3A4 inhibitors, antihypertensives, other PDE5 inhibitors, and excessive alcohol.

Before using Tadalafil, always consult a doctor for the appropriate dosage. Moreover, men with heart disease, uncontrolled BP, serious liver or kidney disease, or a recent heart attack or Stroke need medical approval before use. Seek help if severe Hypotension symptoms, such as dizziness, fainting, weakness, blurred vision, or nausea, are observed.