Viagra 150 mg (Sildenafil Citrate) Tablet

Manufacturer	Centurion Laboratories
Active Ingredient	Sildenafil citrate
Starts In	30 minutes to 1 hour
Last Long	Up to 4 to 6 hours
Treats	Erectile Dysfunction

How It Works

Viagra 150 mg contains the ingredient Sildenafil Citrate, a medicine from the PDE5 inhibitor group. The medication blocks the enzyme that breaks down cGMP, allowing blood vessels in the penis to relax and increase blood flow. This helps maintain a firmer and longer-lasting erection during sexual arousal.

During sexual stimulation, the blood vessel lining in the penis releases nitric oxide (NO), which triggers the production of cGMP in the smooth muscle cells of the penis. cGMP prompts the smooth muscle cells to relax. This action widens the penis’ blood vessels. The relaxation of smooth muscle cells allows for improved blood flow into the spongy tissue of the penis. This tissue is called the corpus cavernosum. The increased blood flow fills the spongy tissue, leading to an erection.

These pills do not directly induce an erection. Instead, it enhances the natural erectile response by amplifying penile blood flow upon sexual stimulation.

Uses

Viagra 150 mg treats erectile dysfunction (ED) in men. It helps improve blood flow to the penis, allowing men to achieve and maintain an erection during sexual activity.

Dosage

Do not take more than one pill in 24 hours. It should be taken approximately 30 minutes to 1 hour before any sexual activity. The effects of this medicine last for around 4 to 6 hours. You can consume Viagra 150mg with or without food. Taking the medication after a high-fat meal can delay its effectiveness.

Missed Dosage

This pill is taken as and when needed. Therefore, the chances of missing a dose are very less. If it’s time for your next scheduled dose, skip the missed dose. Consult your doctor about what should be done when a dose is missed.

Overdose

Taking more than the recommended dose of Sildenafil can increase the risk of side effects and should be avoided. Seek medical attention immediately if you experience symptoms of an overdose, such as severe dizziness, fainting, or prolonged and painful erection.

Important Advisory

Before you take Viagra 150 mg, tell your doctor if you have or had:

1. History of stomach ulcers.
   
2. History of liver problems.
   
3. History of blood cell issues such as sickle cell anemia, multiple myeloma, or leukemia
   
4. Low blood pressure
   
5. Uncontrolled high blood pressure
   
6. Penis with an unusual shape or Peyronie’s.
   
7. A prolonged erection lasting more than 4 hours.
   
8. History of heart surgery in the past 6 months.
   
9. Pulmonary hypertension.
   
10. A history of retinitis pigmentosa
    
11. Bleeding problems.
    
12. Kidney problems
    
13. Kidney dialysis.
    
14. Heart attack
    
15. Irregular heartbeat
    
16. Aortic valve narrowing
    
17. Heart failure
    
18. Angina (chest pain)
    
19. Allergy from Sildenafil Citrate or any other medications.
    
20. A history of stroke, congestive heart failure, etc.
    
21. Suffer from conditions such as diabetes, high blood cholesterol, high blood pressure, etc.
    
22. Take nitrates for chest pain.
    
23. Suffer from epilepsy or seizures.
    
24. Are pregnant or breastfeeding.
    
25. Suffer from ischemic heart disease (also known as coronary artery disease).
26. Are an alcoholic or have a history of substance abuse.

Sildenafil should only be taken under the supervision of a doctor. It should not be used by women or children.

Side Effects

While using the medication, be mindful of potential side effects that may arise.

Common side effects:

1. Nausea
2. Vomiting
3. Motion sickness
4. Palpitations
5. Dizziness
6. Flushing
7. Headaches
8. Diarrhea
9. Nosebleed
10. Indigestion

Serious Side Effects:

1. Priapism
2. Sudden Vision Loss: Non-Arteritic Anterior Ischemic Optic Neuropathy (Naion).
3. Sudden Hearing Decrease or Loss (tinnitus) or dizziness.

Rare Side Effects (Reported in Some Men):

1. Heart attack
2. Stroke
3. Irregular heartbeats
4. Death

If you experience any severe or persistent side effects or notice any changes in your health, consult your doctor immediately.

Drug Interactions

You should tell your doctor if you take any form of herbal, OTC, recreational, or any other form of drugs. These drugs can affect the way Viagra 150 mg works.

1. Alpha-blockers such as alfuzosin, doxazosin, prazosin, tamsulosin, and terazosin
2. Amlodipine
3. Antifungal medications such as itraconazole and ketoconazole
4. Blood thinners such as warfarin
5. Cimetidine
6. Antibiotics such as erythromycin and clarithromycin
7. Efavirenz
8. Beta-blockers such as atenolol, labetalol, metoprolol, and nadolol
9. HIV Protease inhibitors such as atazanavir, indinavir, darunavir, fosamprenavir, lopinavir, saquinavir, and ritonavir
10. Medications for seizures such as carbamazepine and phenytoin
11. Other medicine for Erectile Dysfunction
12. Medications for blood pressure

This isn’t a complete list of potential drug interactions. Discuss possible drug interactions with your doctor before starting this medicine.

Interaction with Alcohol

Alcohol is known to increase the chances of experiencing side effects. Avoid consuming alcohol alongside this medication at all costs.

Interaction with Grapefruit juice

Grapefruit juice raises the levels of this drug in the body and delays the time it takes for the medication to work. Therefore, it should not be consumed while taking this medication.

Storage Instructions

These pills should be stored safely in their original packaging.

1. Keep the pills away from direct moisture and light.
2. Do not store the pills in the bathroom.
3. Keep the pills away from the reach of children and pets.
4. Store in a cool, dry place, under controlled temperatures as mentioned on the packaging.

Substitutes Available

Frequently Asked Questions (FAQs)

How many pills of Viagra 150 mg can I take daily?

A single dose of Viagra 150 mg is recommended to be taken in 24 hours. It should not be taken more than once in 24 hours.

How long do the effects of Viagra 150 mg last?

The effects of Viagra 150 mg can last for around 4 to 5 hours.

References

• Drugs H. Sildenafil: MedlinePlus Drug Information [Internet]. Medlineplus.gov. 2022 [cited 2022 Oct 2]. Available from: https://medlineplus.gov/druginfo/meds/a699015.html
• Irwin GM. Erectile Dysfunction. Prim Care. 2019 Jun;46(2):249-255. doi: 10.1016/j.pop.2019.02.006. Epub 2019 Apr 1. PMID: 31030826. Available from: https://pubmed.ncbi.nlm.nih.gov/31030826/
• Fink HA, Mac Donald R, Rutks IR, Nelson DB, Wilt TJ. Sildenafil for male erectile dysfunction: a systematic review and meta-analysis. Arch Intern Med. 2002 Jun 24;162(12):1349-60. doi: 10.1001/archinte.162.12.1349. PMID: 12076233.  Available from: https://pubmed.ncbi.nlm.nih.gov/12076233/
• Chew KK, Stuckey BG, Thompson PL. Erectile dysfunction, sildenafil and cardiovascular risk. Med J Aust. 2000 Mar 20;172(6):279-83. Erratum in: Med J Aust 2000 May 15;172(10):511. PMID: 10860094. Available from: https://pubmed.ncbi.nlm.nih.gov/10860094/