Description
Cialis 10mg contains tadalafil, a prescription PDE5 inhibitor used to treat erectile dysfunction (ED). It works by increasing blood flow to the penis during sexual stimulation, helping a person achieve and maintain an erection. It does not increase sexual desire and does not work without sexual stimulation.
For as-needed treatment of ED, the FDA-approved prescribing information lists 10mg as the recommended starting dose. Depending on effectiveness and tolerability, a healthcare professional may adjust the dose to 5mg or 20mg. Cialis should not be taken more than once per day.
How Cialis 10mg Works
Tadalafil inhibits an enzyme called phosphodiesterase type 5 (PDE5). During sexual stimulation, this helps support the natural blood-flow processes involved in producing an erection.
Cialis does not automatically cause an erection. Sexual stimulation is still necessary for it to work.
One of tadalafil’s notable characteristics is its relatively long duration. An as-needed dose may improve erectile function for up to 36 hours, although individual responses vary.
How Cialis 10mg Is Taken
Cialis can generally be taken with or without food. For as-needed ED treatment, it is taken before anticipated sexual activity according to the prescribing instructions provided by the healthcare professional.
Do not take more than one dose in a 24-hour period unless specifically instructed by your prescriber.
The appropriate dose can depend on other medicines, kidney or liver function, age, cardiovascular health, and how well the medicine is tolerated.
Common Side Effects
Possible side effects of tadalafil include:
- Headache
- Indigestion
- Back pain
- Muscle aches
- Flushing
- Nasal congestion
- Pain in the limbs
- Dizziness
Many side effects are mild, but persistent or troublesome symptoms should be discussed with a healthcare professional.
Important Safety Information
Do not take Cialis with nitrate medicines, including nitroglycerin or isosorbide medicines. Combining tadalafil with nitrates can cause a potentially dangerous drop in blood pressure.
Tell your doctor or pharmacist if you take:
- Blood-pressure medicines
- Alpha-blockers
- Nitrates
- Other ED medicines
- Certain antifungal or antibiotic medicines
- HIV medicines
- Other prescription or nonprescription medicines or supplements
Avoid excessive alcohol because large amounts can increase the risk of dizziness, headache, increased heart rate, and low blood pressure.
When to Seek Medical Attention
Seek urgent medical attention for an erection lasting more than four hours, sudden vision loss, sudden hearing loss, severe allergic symptoms, or serious cardiovascular symptoms during sexual activity.
If chest pain occurs during sexual activity, seek medical attention rather than taking nitrates, because tadalafil can remain in the body for an extended period.
Cialis 10mg vs. Cialis 20mg
The main difference is the tadalafil strength.
For as-needed ED treatment, 10mg is generally the recommended starting dose, while 20mg may be prescribed when 10mg isn’t sufficiently effective and is tolerated appropriately. A higher strength isn’t automatically better and may increase the likelihood of adverse effects.
Cialis 10mg vs. Daily Tadalafil
As-needed Cialis shouldn’t be confused with once-daily tadalafil therapy.
For daily ED treatment, the prescribing information recommends a lower dose—typically 2.5mg initially, with an increase to 5mg when appropriate. The 10mg strength is primarily used as an as-needed dose for ED.
Frequently Asked Questions
How long does Cialis 10mg last?
Tadalafil can provide improved erectile function for up to 36 hours after an as-needed dose, although the duration varies between individuals.
Does Cialis 10mg increase libido?
No. Tadalafil helps with the physical process of achieving an erection; it doesn’t directly increase sexual desire.
Can Cialis 10mg be taken with food?
Yes. Cialis may be taken with or without food.
Can I take Cialis 10mg every day?
The 10mg strength is generally used as needed for ED rather than as a routine daily dose. Daily tadalafil uses lower strengths and should be taken according to a clinician’s instructions.
Can Cialis 10mg be taken with Viagra?
Cialis should not be combined with other PDE5 inhibitors or ED medicines unless specifically directed by a healthcare professional.

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