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Interactions

A. Top Drug-Drug Interactions:

1.Nitrates (e.g., nitroglycerin, isosorbide dinitrate): Cialis and nitrates both lower blood pressure. Taking them together can cause a significant and potentially life-threatening drop in blood pressure (hypotension), leading to dizziness, fainting, or even heart attack or stroke. It is contraindicated to use Cialis with nitrates or recreational "poppers" (amyl nitrites).

2.Alpha-blockers (e.g., prazosin, terazosin, tamsulosin): Both Cialis and alpha-blockers relax blood vessels, which can lead to excessive blood pressure reduction when used together. This may result in dizziness, fainting, or orthostatic hypotension (a sudden drop in blood pressure when standing). If needed, your doctor may adjust the dosage or recommend spacing the medications.

3.Other antihypertensive drugs (e.g., atenolol, propranolol, enalapril, lisinopril): Cialis can enhance the blood-pressure-lowering effects of these medications. While this interaction is usually less severe than with nitrates or alpha-blockers, it can still cause dizziness or fainting in sensitive individuals. Close monitoring of blood pressure is recommended.

Other Drug-Drug interactions:

  • Ketoconazole, itraconazole (used to manage fungal infection)
  • Protease inhibitors (used to manage HIV infection) Ex. ritonavir, lopinavir
  • Phenobarbital, phenytoin, carbamazepine (medicines used for fits)
  • Rifampicin, erythromycin, clarithromycin (medicines used for bacterial infections)
  • Other medicines used to improve blood flow to the penis (Ex. sildenafil)

B. Drug-Food Interactions:

Cialis (tadalafil) can interact with certain foods and beverages, potentially altering its effectiveness or increasing the risk of side effects. Here are the key drug-food interactions to be aware of:

  1. Grapefruit and Grapefruit Juice: Grapefruit can increase the levels of tadalafil in your blood by interfering with its metabolism. This may amplify side effects, such as headaches, dizziness, or low blood pressure. Avoid consuming grapefruit or grapefruit juice while taking Cialis.
  2. Alcohol: Drinking alcohol with Cialis can enhance the blood pressure-lowering effects of the medication, leading to symptoms like dizziness, lightheadedness, or fainting. Limiting alcohol intake is recommended while using Cialis.
  3. High-Fat Meals: While Cialis can be taken with or without food, consuming it with a high-fat meal may delay its onset of action. Opt for lighter meals if rapid effectiveness is needed.
  4. Caffeine: Though not a direct interaction, combining Cialis with high caffeine intake might worsen side effects like headaches or increase heart rate in sensitive individuals.
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Cialis (tadalafil) can lower blood pressure by several putresces over a period of several hours in some cases.

  1. Grapefruit and Grape Juice: The interaction can increase the blood pressure-lowering effects of tadalafil, leading to side effects like headaches or dizziness. Avoid consuming grapefruit or grapefruit juice while taking tadalafil.
  2. : Though not a direct interaction, combining Cialis with higher alcohol consumption might worsen side effects like headaches or increase heart rate in sensitive individuals.
  3. : Though not a direct interaction, combining Cialis with higher caffeine intake might worsen side effects like headaches or increase heart rate in sensitive individuals.

Cialis has been shown to cause some mild side effects. Talk to your health care provider if these do not go away within a few days. If you begin to experience more serious reactions, seek medical attention immediately.

Common side effects reported from Cialis use include:

  • Headache
  • Indigestion
  • Heartburn
  • Upset stomach
  • Gas
  • Nausea
  • Flushing

More severe side effects include:

  • Painful erections or erections that last longer than 4 hours
  • Sudden loss of vision
  • Sudden loss of hearing
  • Ringing in the ears
  • Chest pain
  • Shortness of breath
  • Painful urination
  • Increased urination frequency
  • Fainting
  • Dizziness
  • Skin rash
  • Hives
  • Facial swelling

If you experience any of these side effects, seek medical attention immediately. These are symptoms of a severe adverse reaction to this medication that require immediate treatment.

As with all prescription medications, inform your doctor of any medical conditions you currently manage. Tell them about any and all medications, prescription drugs, and supplements you are taking before starting treatment with Cialis. Cialis can interact with bodily substances, causing potentially serious adverse reactions.

Specifically, you should inform your health care provider of any alpha-blocker, antifungal, HIV protease inhibitor, or high blood pressure medication you are taking. Remember to mention any herbal products you use, especially St. John’s wort.

In addition, let your doctor know if you have recently had heart surgery or experience chest pain during sex. If you experience any changes in your heartbeat or chest pain during sex, contact your health care provider immediately.

Read more about Cialis's effects on the heart and the penis available at virtual health visitsSexual Health Communication

Cialis Side Effects

As with any medication, Cialis can cause some side effects. The most common side effects are:

  • Stomach pain
  • Gastrointestinal symptoms
  • Back pain
  • Muscle ache

As with any medication, there may be an increased risk of side effects from Cialis. This is not a comprehensive list of side effects. If you experience any of the following symptoms, contact your health care provider immediately:

  • Swelling in the face, tongue, or throat
  • Swelling in the thighs, back, or abdomen
  • Sudden numbness or weakness
  • Unusual heartbeat
  • Unusual muscle pain

As with all medications, inform your doctor if you have recently had heart surgery. If you experience chest pain during sex, contact your health care provider immediately.

In addition, let your doctor know if you are taking nitrates, as they can cause a dangerous drop in blood pressure.

In addition, let your doctor know if you are pregnant or plan on becoming pregnant. If you become pregnant, your health care provider may prescribe Cialis to treat the side effects of the medication. In addition, let your doctor know if you are taking any other medications, including other types of prescription drugs and supplements.

In addition, let your doctor know if you are Asian, African, or are already taking other medications. This may increase the risk of side effects.

Let your doctor know if you are having surgery or are experiencing pain during sex. Cialis can cause a potentially serious drop in blood pressure that requires medical attention.

In addition, let your doctor know if you take any other medications, including other types of prescription drugs and supplements. Some medications can interact with Cialis, so it is important to avoid taking certain medications when starting treatment.

In addition, let your doctor know if you are using any other medications for medical conditions, infections, or were recently diagnosed in your treatment plan.

Whether you can take Tadalafil at the same time as your other medications will depend on which medications you are taking.

You are required to complete a short medical consultation questionnaire that asks for any medications that you are prescribed from your GP and will indicate the medications that can’t be taken alongside Tadalafil.

There are several medicines which should not be taken concurrently with Tadalafil. Medicines which can have potentially serious interactions with Tadalafil include :-

• Any alpha-blocker medicines e.g. doxazosin (Cardura), alfuzosin (Xatral), tamsulosin, terazosin, or Flomax, that you can buy in the pharmacy. (These medicines may be used to treat prostate problems or high blood pressure).

• Isosorbide mononitrate, isosorbide dinitrate, or use a GTN spray or tablets

for chest pain or use Rectogesic ointment?

• Nicorandil (Ikorel), used to treat angina

• Cimetidine, used to treat stomach or duodenal (peptic) ulcers

• Theophylline, used to treat asthma

• Antibiotics:- Clarithromycin, Erythromycin and Telithromycin

• Anti-fungals such as itraconazole and ketoconazole

• Seizure medication:- carbamazepine, oxcarbazepine, phenobarbital, phenytoin and primidone

• Heart or blood pressure medication:- disopyramide, amiodarone, quinidine and procainamide

• Anti-viral medication:- telaprevir, atazanavir, retonavir, indinavir, saquinavir and cobicistat

• Recreational drugs:- amyl nitrate (poppers)

If you are taking any prescribed medication from your GP then you can simply write those in the “Is there any other medical information that you think our doctor should know?” section on the medical questionnaire. Then, our doctor will know whether the Tadalafil is safe for you to take.

Read available consultation questions posted by Patients with Tadalafil tablets

Tadalafil tablets

Tadalafil is the medical name for isosorbide mononitrate which should be used to treat certain types of high blood pressure conditions, such as Tadalafil which is used to treat acute coronary syndrome (ARS), and Tadalafil which is used to treat angina.

Tadalafil is also the medical name for amyl nitrite which is an antibiotic medication used to treat bacterial infections.

Patients with treatment for their conditions will usually benefit from taking Tadalafil tablets to help treat other conditions, such as, patients with kidney or liver problems, or a personal getaway using Tadalafil tablets.

There are several drugs on the drug market which you may find in the list of medical names that are referred to as Tadalafil by your doctor, and others that you should know about.

You should not take Tadalafil if you are directly taking any of the following medical conditions :

  • any disease of the heart, such as heart rhythm or irregular heartbeat
  • any other cause of high blood pressure
  • acizers like Cialis, Levitra, Alesse or Staxyn
  • other medicines that can lower blood pressure

You should not take Tadalafil if you have any of the following criteria :

  • decreased or increased heart rate
  • a history of fainting
  • decreased or increased blood pressure
  • you are due to have an illness in which you treat bacterial infections, such as heart rhythm or irregular heartbeat
  • you have had organ transplant rejection
  • you have a history of hypersensitivity reactions (such asOUGHN) to the drug

You should not take Tadalafil if you are due to have an illness in which you treat bacterial infections, such as heart rhythm or irregular heartbeat.

Overview of Cialis (tadalafil) and its uses

Cialis (tadalafil) and its generic equivalent, tadalafil citrate, are used to treat erectile dysfunction (ED). ED is the inability to achieve or maintain an erection firm enough for satisfactory sexual performance. ED is a common condition that affects millions of men globally. It can have a significant impact on a man's self-esteem, relationships, and overall quality of life.

Cialis is a phosphodiesterase-5 (PDE5) inhibitor. It works by relaxing the blood vessels in the penis, allowing increased blood flow and resulting in a firm erection. This enhanced blood flow helps to achieve and maintain a hard, erect penis suitable for sexual activity.

Cialis and tadalafil interactions

When taking Cialis, it is important to be aware of potential interactions with other medications, including nitrates, which can cause dangerous drops in blood pressure. It's also important to note that Cialis can have adverse effects on the heart, including chest pain, irregular heartbeat, and fainting.

Additionally, taking Cialis can lead to increased levels of certain chemicals in the body, including nitric oxide in the lungs, which can increase the workload of the heart and cause a dangerous drop in blood pressure. This interaction should be discussed with a healthcare provider.

Side effects of Cialis (tadalafil)

Common side effects of Cialis may include:

  • Headache
  • Flushing
  • Indigestion
  • Nasal congestion
  • Flushing with light sensitivity
  • Stuffy nose
  • Back pain

Rare side effects of Cialis may include:

  • Dizziness
  • Lightheadedness
  • Rash
  • Seizures
  • Difficulty in breathing
  • Uncontrolled lower-back pain

How to use Cialis (tadalafil)

Cialis comes as a tablet to take by mouth. It should be taken once daily at approximately four hours before sexual activity. The recommended starting dose is 20 mg, taken orally once daily at approximately four hours after the first dose. Cialis should be taken with a meal, as it can increase the effects of the drug. The dose may be adjusted based on individual response and tolerability. The dosage can be adjusted to the individual's needs, depending on factors such as:

  • The frequency and duration of use
  • The severity of your erectile dysfunction
  • The type and frequency of sexual stimulation

Cialis (tadalafil) side effects

Some side effects of Cialis may be mild to moderate in nature. These side effects may lessen as your body gets used to the medication. In some cases, more serious side effects may occur.