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Possible Side Effects of Cialis 20 mg Tablets
What happens if I overdose?
Side Effects
STRONGER ERECTIONS, BETTER SEX
Dosing & Uses

Clinical Studies on Cialis Tadalafil 20mg Efficacy

Cialis — 20 mg or otherwise — doesn’t just give you an erection, though. Some form of sexual stimulation is required to get hard. Cialis 20 mg may be a more effective treatment for ED than the 10 mg version. Clinical trials found that 68 to 77 percent of men taking 10 mg Cialis were able to have penetrative sex with their partner. Of those taking 20 mg Cialis, 76 to 85 percent were able to have penetrative sex. But not all research agrees — a smaller daily dose may be just as effective as the as-needed Cialis treatment.

Medication Type	Interaction Effect	Advice
Nitrates	Risk of severe hypotension	Do not combine
Alpha-blockers	Additive blood pressure lowering	Use under medical supervision
CYP3A4 inhibitors	Increased tadalafil levels	Dose adjustment may be necessary
Antibiotics (e.g., erythromycin)	Possible increased side effects	Monitor for adverse reactions

A systematic review and meta-analysis examined six randomized controlled trials involving more than 1,500 people and compared an as-needed tadalafil treatment to a once-a-day dose. The results showed that both treatments were about equally effective. While Cialis works similarly to Viagra®, Cialis lasts longer in your body. In fact, Cialis is known as the “weekend pill” for its long half-life. Because you can pop one pill and have sex whenever you like over the next 36 hours (give or take a few hours), it offers more spontaneity. In comparison, avanafil only lasts up to cialis alternative six hours, and Viagra only lasts up to four hours. Clinical trials show that Cialis is effective for various severities and types of ED, including difficult-to-treat ED.

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To get the maximum effect from Cialis, take it exactly as prescribed. If you’re using once-daily Cialis for either erectile dysfunction (ED) or benign prostatic hyperplasia (BPH), take your dose around the same time each day. This helps keep a consistent amount of the drug in your body to provide the maximum effect. If you forget to take doses, skip doses, or take doses late, the medication won’t work as well. When prescribed for ED, take one Cialis tablet at least 30 minutes before anticipated sexual activity.

Dosage for benign prostatic hyperplasia (BPH)

If you have other questions about how to get the most from Cialis, talk with your doctor or pharmacist. Studies show that the drug begins to work 30 minutes to 6 hours after you take your first dose. But it may take several days for the medication to reach its full effectiveness. If you don’t notice a reduction in your BPH symptoms or ED within a week of daily use, talk with your doctor. They may need to adjust your dosage. If you find Cialis 10 mg isn’t working, a 20 mg tablet might do the trick. You don’t need to take it every day.

Product	Dosage	Quantity + Bonus	Price
Cialis Generic	10mg	270 + 10 Pills	308.71€ 294.01€
Cialis Soft Tabs	20mg	90 + 6 Pills	216.71€ 206.39€
Cialis Generic	60mg	270 + 10 Pills	443.96€ 422.82€
Cialis Generic	5mg	90 + 6 Pills	115.91€ 110.39€
Cialis Generic	5mg	30 + 4 Pills	53.56€ 51.01€
Cialis Generic	10mg	120 + 6 Pills	178.49€ 169.99€
Cialis Generic	2.5mg	60 + 4 Pills	83.43€ 79.46€
Cialis Generic	10mg	30 + 4 Pills	63.32€ 60.30€
Cialis Generic	60mg	30 + 2 Pills	85.33€ 81.27€
Cialis Generic	2.5mg	360 + 10 Pills	260.03€ 247.65€
Cialis Generic	40mg	120 + 8 Pills	206.98€ 197.12€
Cialis Generic	20mg	270 + 10 Pills	335.21€ 319.25€

Depending on your preference and lifestyle, you may not want to take Cialis day in and day out.

Possible Side Effects of Cialis 20 mg Tablets

Below, we’ll cover what Cialis 20 mg is used for, the benefits and side effects of this dose of Cialis, and how it compares to other strengths. Cialis is a brand buy cialis lilly name for tadalafil, a widely prescribed ED medication. Benign prostatic hyperplasia (BPH) or an enlarged prostate Benign prostatic hyperplasia (BPH) or an enlarged prostate Other forms of tadalafil are used to treat pulmonary arterial hypertension, a type of high blood pressure in the lungs, but Cialis is not prescribed for this condition. Cialis doses include 2.5 mg, 5 mg, 10 mg, and 20 mg. You can take Cialis on an as-needed basis and pop a pill before sex, or you can take a daily dose of Cialis so you’re always ready for action. In fact, the 20 mg dose of Cialis should only be taken as needed. Side effects of Cialis are usually mild and should go away on their own — although they may be worse with higher doses. For example, in clinical trials, 11 percent of people taking tadalafil 10 mg got a headache, whereas 15 percent of those taking tadalafil 20 mg got a headache.

Step	Description	Duration
Take with water	Swallow the pill whole, with a glass of water	Once daily
Timing	30 minutes to 1 hour before sexual activity	As needed
Food interactions	Can be taken with or without food, high-fat meals may delay effect	N/A
Maximum dosage	20 mg per day	N/A

Some side effects have the same likelihood in both doses, such as flushing and limb pain.

What happens if I overdose?

If you’re 70 years old, your doctor will likely start you on a low dosage of Cialis. If it works well for you, you’ll probably continue taking a low dosage. If it doesn’t work well for you or you develop bothersome side effects, your doctor will adjust your dosage. The goal is to find the lowest dosage that effectively treats your BPH symptoms or ED without causing bothersome side effects. If you have questions about what your Cialis dosage should be, talk with your doctor.

Benign prostatic hyperplasia

As ED treatments, both Cialis and Viagra can be taken occasionally (as needed) before sexual activity. The usual dosage for occasional Cialis use is one 10-mg tablet at least 30 minutes before anticipated sexual activity. The usual dosage for occasional Viagra use is one dose 1 hour before sexual activity. Cialis is also approved for once-daily dosing for ED, but Viagra is not. This is because the effects of Cialis on ED can last much longer than Viagra’s effects. If the side effects of Cialis 20 mg are too much, a healthcare provider may reduce your dose. If this is a particularly annoying side effect of other ED medications, switching to Cialis may be the answer. A 2017 systematic review and meta-analysis compared sildenafil (the generic of Viagra) and tadalafil. It found that tadalafil caused lower rates of flushing. Muscle aches and back pain were more common in tadalafil than sildenafil, though.

Cialis 20 mg is part of ED treatment options.
Sometimes prescribed along with counseling for psychological issues.
It can improve quality of life and intimacy.
Not suitable for men with certain health conditions.
Always inform your doctor of all health concerns.
Follow all medical advice closely when using Cialis.

Overall, tadalafil and sildenafil had similar efficacy and safety, but men and their partners preferred tadalafil. You can learn more about the two ED treatments in our Cialis vs. Viagra guide. As with any medication, Cialis comes with possible side effects. The most common Cialis side effects include: Clinical trials show that most side effects are dose-dependent, meaning you’re more likely to get them with higher doses — and remember, Cialis 20 mg is the highest dose of the drug.

Side Effects

The maximum recommended daily dosage of Cialis is 20 mg per day if you take it as needed for ED. If you take Cialis daily, the maximum dosage is 5 mg per day. Taking doses of Cialis over the recommended limit could lead to serious side effects, such as dangerously low blood pressure or priapism (a painful erection lasting 4 hours or longer). Cialis dosage is not based on your age alone. Instead, your doctor will prescribe the dosage that’s best for your condition.

Does tadalafil interact with other medicines (drug interactions)?

Before prescribing Cialis, your doctor may send you for a blood test to check how well your kidneys and liver are working. This is because they’ll take your kidney and liver health into consideration when determining your dosage. For many people, their kidneys may not work as well as they age. So if you’re an older adult (age 65 years or older), it may take longer for your body to break down and clear Cialis from your system. Older adults’ bodies also be more sensitive in how they react to Cialis, which may increase their risk of side effects. Allergic reactions to Cialis aren’t common but they’re possible. Swelling of the lips, tongue, or throat Swelling of the lips, tongue, or throat There’s also a risk of priapism or prolonged erections — we’re talking for several hours here.

STRONGER ERECTIONS, BETTER SEX

One dose of Cialis can help with erectile function for up to 36 hours. In comparison, Viagra’s effects can last up to 4 hours. But on average, its effects start to reduce 2 to 3 hours after you take a dose. The typical dose for once-daily Cialis for ED is 2.5 milligrams (mg) to 5 mg. When used as needed for ED, the usual Cialis dose is 10 mg (with a maximum daily dose of 20 mg).

It increases your chances of side effects

The typical dose of Viagra for ED is 50 mg. Talk with your doctor to determine whether Cialis or Viagra is the better option for you. Disclaimer: Healthline has made every effort to make certain that all information is factually correct, comprehensive, and up to date. You might have seen Cialis® — the popular erectile dysfunction (ED) medication — available in doses ranging from 2.5 mg to 20 mg. Cialis 20 mg is an effective erectile dysfunction treatment, but so are the lower doses of the drug. It may sound great if you’re suffering from ED, but prolonged erections can be painful and cause irreversible damage to the penis.

Cialis 20 mg is a phosphodiesterase inhibitor.
It improves blood flow to the penis.
The pill is designed for once-a-day or as-needed use.
Always follow prescribed dosages for safety.
It does not protect against sexually transmitted infections.
Emergency contact info should be available when using Cialis.

If your erection lasts more than four hours, seek medical advice. You may be more likely to get prolonged, painful erections from Cialis if you have: Anatomic deformations in the penis (like Peyronie’s disease) Anatomic deformations in the penis (like Peyronie’s disease) There’s also a small risk of vision loss. If you notice any vision loss in one or both eyes, stop taking Cialis and seek medical help. This could be a sign of non-arteritic anterior ischemic optic neuropathy (NAION), which is caused by a lack of blood flow to the optic nerve. Another serious side effect includes a sudden decrease in hearing or hearing loss. Again, get medical advice as soon as you notice this. There are also a few drug interactions you should know about.

The cost of brand-name Cialis is significantly higher than its generics.
Manufacturer coupons or patient assistance programs may be available.
Check the Lilly Cares Foundation for potential assistance programs.
Many prescription discount cards can reduce the out-of-pocket cost.
Prices can vary between pharmacies, so it pays to shop around.
A 30-day supply of generic Tadalafil can often be found for under $30.
Some mail-order pharmacies offer lower prices for a 90-day supply.
Always ensure you are comparing the same dosage and quantity.

You shouldn’t take Cialis 20 mg (or any dose of the drug) at all if you’re taking nitrates. The combo can cause your blood pressure to drop suddenly, resulting in dizziness, loss of consciousness, or even a heart attack or stroke.

Long-term studies have evaluated the safety of continuous Tadalafil use.
One study involved men taking daily 5 mg Tadalafil for up to 2 years.
The long-term safety profile was consistent with shorter-term studies.
No new major safety concerns emerged with prolonged use.
Some patients report tolerance does not develop with long-term use.
Efficacy can be maintained over years of treatment for many men.
Regular follow-up with a doctor is recommended for long-term users.
Your doctor may periodically reassess if continued treatment is necessary.

Nitrates can be found in medications like isosorbide dinitrate or isosorbide mononitrate, which are used to treat prevent angina caused by heart disease.

Dosing & Uses

If you’re taking it as needed, you’ll likely be prescribed 5 mg, 10 mg, or 20 mg. The 10 mg strength is the typical starting dose, and it can be adjusted up or down depending on efficacy and side effects. But you won’t be taking 20 mg of Cialis daily. The lower doses of 2.5 mg and 5 mg are the daily doses of Cialis. For ED — which is when you struggle to get or keep an erection — Cialis works by dilating the blood vessels in the penis, which leads to a firmer erection. Also, watch out for recreational drugs that contain nitrates, like “poppers.” You also shouldn’t take Cialis if you take medications called guanylate cyclase stimulators, such as riociguat, which treats pulmonary hypertension. If you’re taking alpha-blockers (like doxazosin, tamsulosin, or alfuzosin) — which mainly treat high blood pressure or BPH — or CYP3A4 inhibitors (like the antibiotic erythromycin and the antifungal medication ketoconazole), which treat a wide variety of conditions, you may be prescribed a low dose of Cialis—probably not the 20 mg kind. It’s unclear whether it’s safe to take Cialis 20 mg or any dose of the drug with other PDE5 inhibitors, such as: Tell your prescribing healthcare provider about the medications or supplements you’re taking before trying Cialis.