Viagra (Sildenafil Citrate), known as Viagra in Malaysia, is the most recognised product in the ED treatment field, manufactured by Pfizer. Pfizer was founded in 1849, headquartered in New York, USA, with major R&D centres across the US and UK. By 2009, Pfizer employed over 100,000 people across 150+ countries with revenues of US$50 billion and R&D spending of US$7.9 billion, making it the world’s largest pharmaceutical company. For over 160 years, Pfizer has been dedicated to researching, manufacturing, and marketing high-quality, safe, and effective prescription medications. From the discovery of penicillin to today’s Viagra for ED patients, Pfizer continues to find treatments for each era’s major medical challenges.
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Pfizer Inc. (Pfizer, NYSE: PFE) is an American multinational pharmaceutical company headquartered in New York. Best-selling products include cholesterol-lowering drug Lipitor, oral antifungal Diflucan, antibiotic Zithromax, and ED treatment Viagra. Pfizer is currently the world’s largest pharmaceutical company.
In 1998, Pfizer launched Sildenafil Citrate (Viagra), achieving unprecedented success. Statistics show that globally, four Viagra tablets are consumed every second. Pfizer’s commercial success with Viagra led to the acquisitions of Warner-Lambert and Pharmacia, making it the largest pharmaceutical company in the United States.
Viagra is the registered name of Sildenafil Citrate in Malaysia, also known simply as Viagra. Its medical name is Sildenafil, originally discovered during research for cardiovascular medications. Viagra is used to treat erectile dysfunction (ED) and has shown remarkable improvement for diminishing erectile function and premature ejaculation.

How Viagra Works:
Taking Viagra does not directly cause sexual arousal. Its role is to help ED patients regain normal erectile function when sexually stimulated. In other words, Viagra’s main function is to restore natural erectile function, allowing you to achieve natural erections when aroused. This is Viagra’s greatest benefit — helping you recover natural erectile function for natural intimacy. Viagra also has a significant delaying effect. Many men find they last longer during intimacy — from 30 minutes to over an hour. For this reason, many also use Viagra as a performance enhancer. Viagra is truly more than just an ED medication. Evidence shows Viagra works effectively as a stamina aid. The effects of Viagra last 4-8 hours, with rapid onset of action. After 24 hours, the medication is completely eliminated from the body, matching 90% of men’s intimate habits. Viagra has been used by over 20 million people worldwide, confirming its long-term safety record. Viagra works within 25-60 minutes, perfectly timed for foreplay, helping couples achieve satisfying intimacy.
Who Can Benefit from Viagra:
Currently, around 7 out of 10 men with ED who use Viagra experience successful treatment, particularly those with psychologically-caused ED. Take 1 tablet about 1 hour before sexual activity. Sexual stimulation is still required for Viagra to work. Since Viagra itself does not enhance libido, it is not an aphrodisiac but rather a treatment that enhances erectile function. Viagra is absorbed orally and reaches peak blood concentration after approximately 30-120 minutes (average 60 minutes), which is the main reason it should be taken about 1 hour before sexual activity.
Can Diabetics Take Viagra?
Doctors report that about 40%-60% of diabetic patients experience some degree of sexual dysfunction, with men commonly experiencing ED. Therefore, diabetic ED patients should actively prevent and treat ED while managing their blood sugar and blood pressure. Viagra-type medications can be used, but patients should consult a specialist doctor first. Those with angina, myocardial infarction, or hypertension who take nitrate medications should be cautious — combining these can worsen heart conditions. Diabetic patients already have a higher risk of cardiovascular disease, so Viagra should not be taken in excess. A reduced dosage is recommended, generally not exceeding 50mg, with 25mg being optimal.
Important Usage Notes:
1. Take one tablet at least 30-60 minutes before sexual activity.
2. If taken after a meal, especially one high in fat, Viagra may take up to 1 hour to be absorbed and take effect.
3. Sexual stimulation or foreplay is still needed for an erection to occur. Without stimulation, the erection will subside. The effect can last up to 4 hours, but you won’t have a persistent erection without stimulation.
4. Heavy alcohol consumption or illness may affect the medication’s effectiveness and should be avoided.
