Abhigra is a sildenafil tablet for erectile dysfunction in adult men. It is intended for men who can achieve better erections when sexual stimulation is present. Sildenafil supports the blood-flow response by relaxing blood vessels in the penis.
Abhigra contains sildenafil citrate. Sildenafil belongs to the PDE5 inhibitor class, alongside tadalafil and vardenafil. The MHRA and EMA describe sildenafil as a phosphodiesterase type 5 inhibitor, also called a PDE5 inhibitor. [1]
Abhigra contains sildenafil citrate. Sildenafil belongs to the PDE5 inhibitor class, alongside tadalafil and vardenafil.
Abhigra tablets are taken by mouth before planned sexual activity. The prescriber-selected dose should be taken as a whole tablet with water. Sildenafil is normally used when needed rather than as a daily erectile dysfunction tablet.
A practical routine includes:
For sildenafil, effects often begin within 30 to 60 minutes. Some men respond earlier, while others need longer. The response can remain useful for several hours, though this does not mean an erection should persist for that time. Food and individual absorption can affect the timing. Sexual stimulation remains necessary for the medicine to produce an erection.
A common mistake is taking another tablet because the first dose did not work immediately. A second dose can increase the risk of headache, flushing, dizziness, low blood pressure, and visual symptoms without improving the result.
During sexual stimulation, nerves release nitric oxide in erectile tissue. Nitric oxide increases cyclic guanosine monophosphate, known as cGMP. This chemical messenger relaxes smooth muscle and allows more blood to enter the penis. PDE5 normally breaks down cGMP. Sildenafil slows this breakdown, so the natural erection response can last long enough for sexual activity.
The effect is local to the erectile response, yet sildenafil can also lower blood pressure slightly because PDE5 is present in blood vessels elsewhere in the body.
Abhigra is an oral treatment for erectile dysfunction, sometimes called impotence. Erectile dysfunction means difficulty getting or keeping an erection firm enough for sexual activity. It can be linked with stress, diabetes, high blood pressure, raised cholesterol, smoking, hormone changes, nerve conditions, or medicines that affect sexual function.
An erection still requires sexual stimulation.
Sildenafil does not increase sexual desire, alter testosterone levels, or produce an erection without arousal. Its role is physical: it supports the blood-flow response that occurs after sexual stimulation.
PDE5 inhibitors share a similar core mechanism, though their timing and duration differ. The right option depends on medical history, frequency of sexual activity, tolerance, and interacting medicines.
| Active ingredient | Expected timing and duration | Practical distinction |
|---|---|---|
| Sildenafil | Usually starts within 30–60 minutes; effects may last about 4 hours | Often chosen for planned, occasional use |
| Tadalafil | Usually starts within 30–60 minutes; effects can last up to 36 hours | Longer window, with a higher chance of back or muscle pain |
| Vardenafil | Usually starts within 30–60 minutes; effects may last about 4–5 hours | Similar timing to sildenafil; requires attention to heart-rhythm risks |
Sildenafil has a shorter working window than tadalafil. For some men, that feels more controlled. Tadalafil can offer greater flexibility, though its longer action means side effects may also last longer.
Vardenafil and sildenafil have similar intended use. Vardenafil may be unsuitable for men with certain QT-interval heart-rhythm disorders or those taking medicines that prolong the QT interval. NICE guidance lists PDE5 inhibitors as established treatment options for erectile dysfunction after cardiovascular suitability and interacting medicines have been considered. [2]
Abhigra is not for you if you use nitrate medicines for angina or chest pain. This includes glyceryl trinitrate, isosorbide mononitrate, isosorbide dinitrate, and recreational nitrite products sometimes called poppers. Combining a nitrate with sildenafil can cause a dangerous fall in blood pressure.
Extra care is needed with alpha-blockers used for urinary symptoms or blood pressure, such as tamsulosin, doxazosin, or alfuzosin. Taking these medicines close together can cause dizziness or fainting from low blood pressure. Medicines that strongly inhibit CYP3A4, including ritonavir, cobicistat, ketoconazole, itraconazole, clarithromycin, and erythromycin, can raise sildenafil levels.
Do not use Abhigra if you take nitrate medicines or recreational nitrite products, or if you use riociguat. It may also be unsuitable if you have unstable heart disease, have recently had a heart attack or stroke without medical clearance, or have very low or uncontrolled high blood pressure. Speak with a clinician before using it if you take alpha-blockers, have serious liver or kidney problems, or have had a sudden optic-nerve circulation problem.
Most sildenafil side effects are linked to widened blood vessels and its mild activity on PDE6, an enzyme involved in visual signalling. Headache is the most frequently reported effect. Facial flushing, indigestion, nasal congestion, dizziness, and temporary visual colour changes can also occur.
Common effects include:
These effects are often dose-related. A headache after sildenafil can be unpleasant, yet it usually settles as the medicine leaves the body. Persistent or severe headache, fainting, chest pain, or major visual changes need urgent medical attention.
Rare but serious reactions require prompt action. Stop sexual activity and seek emergency help for chest pain. An erection lasting more than four hours, called priapism, can damage penile tissue and needs urgent treatment. Sudden loss of vision or sudden hearing loss also requires urgent assessment.
The MHRA product information for sildenafil records headache, flushing, dyspepsia, nasal congestion, dizziness, and visual disturbance among recognised adverse effects. [1]
Several avoidable errors explain why sildenafil can feel less helpful than expected.
In clinical practice, doctors often begin by looking beyond the erection itself. New erectile dysfunction can be an early marker of vascular disease, diabetes, depression, sleep problems, medication effects, or low testosterone. A PDE5 inhibitor may help the immediate symptom, while the cause still deserves attention.
Clinicians also see unrealistic expectations. Sildenafil supports an erection response; it does not remove performance anxiety, relationship tension, fatigue, or lack of sexual stimulation. Men who take it after a large meal, drink heavily, or expect an immediate response often report less benefit.
The strongest medical reason to pause before treatment is cardiovascular risk. Sexual activity places physical demand on the heart, so unstable angina, severe breathlessness, recent cardiac events, or nitrate use change the decision completely.
Sildenafil commonly starts working within 30 to 60 minutes, though food can delay absorption. A high-fat meal is more likely to slow the onset than a light meal. The FDA prescribing information (2023) states that sildenafil should be used before planned sexual activity and requires sexual stimulation for an erection response.
The useful erectile response from sildenafil may last for about four hours, though the timing varies between individuals. This refers to the period in which sexual stimulation can more easily produce an erection, not to a continuous erection. The MHRA product information (2023) describes sildenafil as a short-acting PDE5 inhibitor used on demand for erectile dysfunction.
Small amounts of alcohol may not prevent sildenafil from working, yet alcohol can impair erections independently and can increase dizziness or light-headedness. Heavier drinking also raises the chance of low blood pressure during sexual activity. NHS clinical information from 2025 on erectile dysfunction management advises reducing alcohol intake as part of addressing erectile difficulties. [3]
Sildenafil for erectile dysfunction is generally used when needed and no more than once in 24 hours. Daily PDE5-inhibitor treatment is usually associated with a different dosing approach and needs individual medical selection. The MHRA sildenafil product information from 2023 sets a maximum frequency of one dose per day for erectile dysfunction treatment.
Do not take another dose on the same day. Consider whether the tablet was taken after a heavy meal, whether alcohol was involved, whether enough time was allowed, and whether sexual stimulation was present. NICE guidance from 2018 recognises that PDE5 inhibitor response can be affected by correct use, timing, and modifiable lifestyle factors.
Some blood-pressure medicines can be used with sildenafil, though the combination may increase dizziness or lower blood pressure. Alpha-blockers require extra caution because both treatments relax blood vessels. The MHRA advises prescribers in its 2023 product information to consider haemodynamic stability when sildenafil is used with alpha-blockers.
Seek urgent help for chest pain, fainting, a seizure, sudden vision or hearing changes, an allergic reaction with swelling or breathing difficulty, or an erection lasting more than four hours. Priapism can cause permanent harm if treatment is delayed. The FDA safety information from 2023 for sildenafil identifies prolonged erection and sudden sensory changes as serious events requiring urgent evaluation.
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