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Pfizer Inc. has agreed to pay $25.7 million to settle allegations it has marketed and promoted the erectile dysfunction drug Viagra for use in men only.

The settlement includes a $5.5 million fine, which is the highest in the company’s three-year-long investigation of Viagra’s marketing and promotion of the drug. Pfizer’s complaint alleges that “Pfizer has used Viagra to treat erectile dysfunction in men only,” according to.

The settlement includes a $1 million fine for Pfizer and a $3 million civil settlement with the federal government. The company agreed to pay $25.7 million in $100 million settlements for Pfizer’s conduct in this case.

The settlement resolves allegations that the company promoted Viagra for men only and marketed and promoted the drug for male sexual enhancement purposes.

Pfizer said the settlement resolves allegations that the company “made false claims” about the drug’s safety and efficacy.

In a statement, Pfizer said, “Pfizer continues to believe that the product is safe and effective, but does not have sufficient evidence of its safety or efficacy to warrant a charge.”

Pfizer’s sexual health products include the erectile dysfunction drug Viagra, and the anti-impotence drug Cialis.

The settlement is the result of a $25.7 million civil settlement and a $1 million jury verdict.

In a statement, Pfizer said, “Pfizer Inc. has entered into an agreement with the U. S. Food and Drug Administration (FDA) and is arranging for the return of all Pfizer products and their labeling, including Viagra, that have been recalled.”

Pfizer said it is also “reviewing all available marketing options for Viagra, including off-label marketing in the United States and overseas,” including for the company’s erectile dysfunction drug, Cialis.

Pfizer will continue to pursue cases in this case.

The U. Attorney’s Office for the Southern District of Illinois said the following in a statement:

“Pfizer has been and remains a leader in the prevention, diagnosis and treatment of erectile dysfunction (ED), including the treatment of erectile dysfunction (ED) in men. With more than 1 million men affected by ED, the U. Centers for Disease Control and Prevention (CDC) estimates that approximately 60% of men will have some form of ED. As such, Pfizer continues to prioritize patient safety by continuing to market and promote the erectile dysfunction drug Viagra for men only.”

The company said it continues to work closely with the U. Centers for Disease Control and other international agencies to investigate and investigate the case and provide information to health care providers.

Last month, the U. Attorney’s Office for the Eastern District of California said it was pleased to see Pfizer’s sexual health products, Cialis and Viagra, were on the market in the United States. However, the case is still being investigated.

In a statement, Pfizer said, “Pfizer continues to support the mission of the U. Food and Drug Administration (FDA) to help men with ED seek medical attention to improve their sexual health. We encourage patients to consult their physician to explore any potential medical treatments and medications for ED.”

The company said the settlement resolves allegations that Pfizer marketed and promoted the drug for male sexual enhancement purposes. The settlement resolves allegations that the company “made false claims” about the drug’s safety and efficacy, which are allegations Pfizer had allegedly promoted Cialis for men only.

The company did not immediately return a request for comment for this article.

said it continues to work closely with the U. Centers for Disease Control and other international agencies to investigate and provide information to health care providers. The company’s sexual health products are available for free on its website at.

Originally Published: October 16, 2013 at 10:57 AM EDT

Read MorePfizer said it was pleased to see Pfizer’s sexual health products, Cialis and Viagra, were on the market in the United States. However, the company’s sexual health products are available for free on its website at.

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.
Added/Advanced options:

C. Antihypertensives (Smoking):

Cialis (tadalafil) can interact with certain types of cardiovascular medications, including alpha-blockers and impotence treatments. While this interaction is usually less severe than with nitrates or Cimetidine, you should avoid using Cialis if you have high blood pressure, as the drug may cause changes to your blood pressure like dizziness or low blood pressure.

Other Drug-Food Interactions:

Using Cialis with certain medications may increase the risk of side effects.

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.
Human papilloma virus (HPV)hookenderLAND recession ≥10%. Compared to nitrates, Cialis (diltiazem) can reduce the risk of recurrence, but the risk increases with higher dosages.

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.
EU Anticancer Research Society Anticancer Treatment Agency Interactions:
interactions
Cialis (tadalafil)Tadalafil and alcohol
Cialis (tadalafil-based medications)
Nitrates (e.g.