Treats | Erectile Dysfunction |
Quantity | 10 tablets per strip |
Contains | Sildenafil |
Lasts | 4 to 6 hours |
Manufactured By | Zydus Cadila |
How does it Work?
Penegra 100mg contains the active ingredient sildenafil. It belongs to a group of medicines called PDE5 inhibitors. During sexual arousal, a molecule called nitric oxide (NO) is released within the penis. This increases levels of another molecule called the cGMP. cGMP causes the smooth muscles inside the penis to relax.
As a result, the blood vessels open wider, allowing blood to flow. It causes the corpus cavernosa (the spongy tissue in the penis) to swell. Thus, the penis becomes larger and stiff enough for sexual intercourse.
However, an enzyme called PDE5 breaks down cGMP molecules, ending the erection. PDE5 inhibitors such as sildenafil stop PDE5 from working too quickly and prevent the cGMP breakdown. Hence, the action of nitric oxide is enhanced, promoting blood flow. This helps prolong the erection, making it firm enough for intercourse.
Note that Penegra 100mg itself directly does not cause an erection. It helps the body respond better to sexual arousal. Sildenafil has no effect where sexual stimulation is absent.
Uses
Recommended Dose
Side Effects
Here are some possible side effects of Penegra 100mg tablets:
- headache
- heartburn
- nausea
- flushing
- dizziness
- diarrhea
- nosebleeds
- numbness
- muscle pain
- nasal congestion
In rare cases, sildenafil can lead to:
- sudden loss of vision
- blurred vision
- loss of hearing
- ringing in ears
- chest pain
- difficulty in breathing
- painful erection that lasts longer than 4 hours
Safety Advice
Penegra tablets are generally safe when taken as prescribed.
Let your doctor know if you have the following:
- heart disease
- stroke
- low blood pressure
- liver or kidney problems
- bleeding disorder
- or any other conditions
Do not take Penegra if you are intolerant to sildenafil or if you are taking nitrates for chest pain or heart problems.
Learn about potential drug interactions, including the ones listed above.
Call your doctor if any side effects bother you.
Penegra may make you feel drowsy or affect your vision. Do not drive or operate hazardous machinery under its influence.
Women should not use this medicine to improve sexual functions. However, sildenafil may be prescribed for men and women to treat pulmonary arterial hypertension.
100 mg is one of the highest doses of sildenafil available. Speak to your doctor before using the medicine for the first time.
Penegra 100mg should not be taken more than once a day.
Medical Interactions
Penegra 100mg tablets may interact with certain other medications. This may change the way this drug works and increase the risk of side effects. Tell your pharmacist or doctor if you are taking:
- prescription drugs
- over-the-counter (OTC) medications
- vitamins
- herbs or any other supplement
The following drugs tend to have more severe interactions with sildenafil:
- nitrates (taken for chest pain)
- alpha-blockers (treat high blood pressure or hypertension)
- antifungals (such as itraconazole, ketoconazole)
- blood thinners such as warfarin
- barbiturates (treat improving sleep, reducing anxiety, muscle spasms)
- beta-blockers such as atenolol or carvedilol
- some antibiotics
- HIV protease inhibitors (used to treat viral infections)
- other ED medicines
- medicines for seizures
Storage Instructions
- Penegra 100mg tablets should be stored at room temperature.
- The medicine should not be left in warm or humid places. Do not store it in the bathroom cabinet or near a sink. Heat, air, and steam can spoil the medicine.
- Do not repack the medicine. Store it in the original packaging until you consume it.
- Place the medicines in a locked cabinet where children and pets cannot reach.
- Do not take medicines that are expired or no longer needed. Even if you bought them recently, check the label. If you’ve taken expired medicines by mistake, inform your doctor.
- Discard any pills that have gone past their expiry date. Follow your local regulations and laws for their safe disposal.
References
- 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. https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/211714
- Loran OB, Ströberg P, Lee SW, Park NC, Kim SW, Tseng LJ, Collins S, Stecher VJ. Sildenafil citrate 100 mg starting dose in men with erectile dysfunction in an international, double-blind, placebo-controlled study: effect on the sexual experience and reducing feelings of anxiety about the next intercourse attempt. J Sex Med. 2009 Oct;6(10):2826-35. doi: 10.1111/j.1743-6109.2009.01428.x. PMID: 19817982. https://www.jsm.jsexmed.org/article/S1743-6095(15)32273-6/fulltext
- Smith BP, Babos M. Sildenafil. [Updated 2022 May 3]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK558978/
- Galiè N, Ghofrani HA, Torbicki A, Barst RJ, Rubin LJ, Badesch D, Fleming T, Parpia T, Burgess G, Branzi A, Grimminger F, Kurzyna M, Simonneau G; Sildenafil Use in Pulmonary Arterial Hypertension (SUPER) Study Group. Sildenafil citrate therapy for pulmonary arterial hypertension. N Engl J Med. 2005 Nov 17;353(20):2148-57. doi: 10.1056/NEJMoa050010. Erratum in: N Engl J Med. 2006 Jun 1;354(22):2400-1. PMID: 16291984. https://www.nejm.org/doi/full/10.1056/NEJMoa050010
- Sofikitis N, Kaltsas A, Dimitriadis F, Rassweiler J, Grivas N, Zachariou A, Kaponis A, Tsounapi P, Paterakis N, Karagiannis A, Skouros S, Giannakis I, Champilomatis I, Paschopoulos M, Daphnis D, Giakoumakis I, R Gabales M, M Chua JB, Lantin Iii PL, Mamoulakis C, Takenaka A. The Effect of PDE5 Inhibitors on the Male Reproductive Tract. Curr Pharm Des. 2021;27(23):2697-2713. doi: 10.2174/1381612826666200226121510. PMID: 32101115. https://www.eurekaselect.com/article/104866
- Kim JN, Oh JJ, Park DS, Hong YK, Yu YD. Influence of Alcohol on Phosphodiesterase 5 inhibitors Use in Middle- to Old-Aged Men: A Comparative Study of Adverse Events. Sex Med. 2019 Dec;7(4):425-432. doi: 10.1016/j.esxm.2019.07.004. Epub 2019 Aug 20. PMID: 31444051; PMCID: PMC6963111. https://linkinghub.elsevier.com/retrieve/pii/S2050116119300935
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