Alivher Tablet: What It Is, What It Treats, and What to Ask Your Doctor

Quick answer

Alivher contains sildenafil citrate, a prescription medicine approved for erectile dysfunction and pulmonary arterial hypertension. Its use in fertility and pregnancy is off-label, meaning it is not an approved indication, and the evidence is limited. It must never be taken with nitrate heart medicines, a combination that can be fatal. This is a prescription decision, not a self-started one.

Key takeaways

• Never take sildenafil with nitrate medicines such as nitroglycerin or isosorbide. The combination can cause a sudden, dangerous and potentially fatal drop in blood pressure.

• Its use in fertility and pregnancy is off-label, not approved, and supported by limited evidence.

• A major international trial of sildenafil in pregnancy was stopped early because of harm to babies. Anyone discussing its use during pregnancy needs to know this.

• Do not buy it online or without a prescription. Counterfeit and substandard medicines are a real problem, and you cannot verify what you are taking.

• Tell your doctor every medicine you take, including blood pressure medicines, heart medicines and antifungals, before it is prescribed.

What is Alivher?

Alivher is a brand of sildenafil citrate, a medicine belonging to a class called PDE5 inhibitors. These work by relaxing blood vessel walls, which increases blood flow to specific tissues.

It is a prescription-only medicine. It should be taken only when a doctor has prescribed it for you specifically, at a dose they have chosen, after reviewing your medical history and your other medications.

What sildenafil is actually approved for

Everything else is off-label. Off-label means a doctor prescribes a medicine for a purpose it has not been formally approved for. This is legal and sometimes appropriate, but it means the evidence base is weaker and the decision depends heavily on your individual situation.

The off-label fertility uses, and what the evidence shows

You will see sildenafil discussed for several fertility-related purposes. Each deserves an honest description.

If a fertility specialist recommends it to you, that is a clinical judgement made with your full picture in front of them, and it is reasonable to ask why, what the evidence is in your situation, and what the alternatives are.

What it is not is something to start because you read that it helps conception.

Sildenafil in pregnancy: an important safety signal

This is the most important section on this page, and it is missing from most articles about this drug.

An international trial programme investigated whether sildenafil could help babies with severe fetal growth restriction by improving blood flow to the placenta.

One arm of that trial was stopped early because of harm. More babies in the sildenafil group developed a serious lung condition after birth, persistent pulmonary hypertension of the newborn, and there were more neonatal deaths in that group than in the placebo group. Recruitment to sildenafil trials for this purpose was halted internationally as a result.

What this means practically:

• Sildenafil is not used to treat fetal growth restriction, and should not be

• Any use in pregnancy is a specialist decision requiring an explicit discussion of what is known and what is not

• Articles presenting sildenafil as beneficial in pregnancy are working from evidence that has been superseded

If you are pregnant and have been prescribed this medicine, do not simply stop it. Contact the doctor who prescribed it and ask why it was prescribed, what the alternatives are, and whether it should continue.

Who must not take it

Absolute contraindication:

• Anyone taking nitrate medicines, including nitroglycerin, isosorbide mononitrate or dinitrate, in any form, including sprays and patches. The combination can cause a sudden, severe and potentially fatal fall in blood pressure

• Anyone taking riociguat, a medicine for pulmonary hypertension

Do not take without specialist advice if you have:

• Significant heart disease, or have had a recent heart attack or stroke

• Low blood pressure, or uncontrolled high blood pressure

• Severe liver disease

• Severe kidney disease

• A history of certain inherited eye conditions, such as retinitis pigmentosa

• A history of sudden vision loss in one eye

• Sickle cell disease, multiple myeloma or leukaemia

• A physical deformity of the penis, or a condition causing prolonged erections

• A known allergy to sildenafil

Tell your doctor about every medicine you take, particularly blood pressure medicines, alpha blockers, other heart medicines, antifungals such as ketoconazole, certain antibiotics such as erythromycin, and HIV medicines such as ritonavir. Several of these interact significantly.

Avoid grapefruit and grapefruit juice while taking it, since they can raise blood levels of the drug.

Side effects

Common:

• Headache

• Flushing of the face

• Indigestion or stomach upset

• Nasal congestion

• Dizziness

• Visual changes, including a blue tinge to vision or increased light sensitivity

• Muscle aches

• Rash

Seek medical care immediately for:

• Chest pain, particularly during or after sexual activity

• Sudden loss of vision in one or both eyes

• Sudden hearing loss, or ringing in the ears

• An erection lasting more than four hours, which is a medical emergency

• Fainting, or severe dizziness

• Severe allergic reaction, including swelling of the face or throat, or difficulty breathing

How it should be used

Only as your doctor has prescribed. The dose, the timing and the duration all depend on why it has been prescribed, and those differ substantially between indications.

• Do not adjust the dose yourself

• Do not take more than prescribed, and never more than once a day unless specifically directed

• Do not share it with anyone, including a partner

• Do not combine it with other erectile dysfunction treatments or with recreational drugs, particularly amyl nitrite or poppers, which are nitrates

• Limit alcohol, which increases the risk of dizziness and low blood pressure

• Tell any doctor treating you, including in an emergency, that you take it

A warning about buying it without a prescription

Sildenafil is widely available online and from unregistered sellers in India, and this carries real risk.

• Counterfeit and substandard medicines are a documented problem. You cannot verify the active ingredient, the dose, or what else is in the tablet

• Taking it without a medical assessment means nobody has checked whether you have a heart condition, take nitrates, or have any of the contraindications above

• Erectile dysfunction is frequently an early sign of cardiovascular disease or undiagnosed diabetes. Treating the symptom without assessment can mean missing a condition that matters far more

• For women, using it for fertility purposes without a specialist means using an unapproved indication with limited evidence and no monitoring

If you have been advised to take it, get a prescription from a doctor who has examined you, and buy it from a licensed pharmacy.

Questions to ask your doctor

• Why are you prescribing this for me specifically?

• Is this an approved use or an off-label one?

• What is the evidence in my situation, and what are the alternatives?

• What dose, how often, and for how long?

• Does it interact with anything else I take?

• What side effects should I expect, and which mean I should stop and call you?

• What should I do if I become pregnant while taking it?

• Is there a monitoring plan?

If fertility is the reason you are considering it

Start with assessment rather than with a medicine.

Seek a fertility evaluation if you have been trying for:

Seek help immediately, whatever your age, if you have irregular or absent periods, PCOS, endometriosis, a thyroid disorder, two or more miscarriages, previous pelvic surgery or infection, or a known sperm problem.

The first steps are usually straightforward. Blood tests, an ultrasound, a test of whether your tubes are open, and a semen analysis for your partner. Our guide to FSH, LH and prolactin testing explains what is usually offered, and our guide to what actually matters when trying to conceive covers the things with genuine evidence behind them.

Time is the factor that matters most in fertility, and it is the one that no off-label medicine recovers.

Frequently asked questions

What is Alivher used for?
It contains sildenafil, which is approved for erectile dysfunction and pulmonary arterial hypertension. Other uses, including fertility-related ones, are off-label.

Is Alivher a prescription medicine?
Yes. It should only be taken when prescribed by a doctor who has reviewed your medical history and other medicines.

Does sildenafil improve egg quality?
There is no good evidence that it does. This claim appears frequently and is not supported.

Does it thicken the uterine lining for IVF?
Some small studies have looked at this, and it is used by some specialists in selected cases. It is not standard care, and the evidence is limited.

Is it safe in pregnancy?
Its use in pregnancy is off-label, and a major international trial of sildenafil for fetal growth restriction was stopped early because of harm to babies. Any use in pregnancy is a specialist decision.

What must I never take it with?
Nitrate medicines such as nitroglycerin or isosorbide, in any form. The combination can be fatal. Also riociguat.

What are the common side effects?
Headache, facial flushing, indigestion, nasal congestion, dizziness and visual changes such as a blue tinge.

Can I buy it online?
You should not. Counterfeit and substandard medicines are a documented problem, and taking it without assessment means nobody has checked for contraindications.

Can women take sildenafil?
It is sometimes prescribed off-label to women by specialists. It is not an approved indication, and it should not be taken without a doctor's assessment.

I became pregnant while taking it. What should I do?
Do not simply stop. Contact the doctor who prescribed it and tell them you are pregnant, so they can advise.

The bottom line

Alivher contains sildenafil, a prescription medicine approved for erectile dysfunction and pulmonary arterial hypertension, and every fertility-related use is off-label with limited evidence behind it. The two things to take from this page are that it must never be combined with nitrate heart medicines, and that its use in pregnancy carries a documented safety signal from a trial that was stopped early. If fertility is the reason you are reading this, the useful next step is an assessment rather than a tablet.

Sources

• Medicines and Healthcare products Regulatory Agency, drug safety update on sildenafil in pregnancy

• European Medicines Agency and national regulator communications on the STRIDER trial

• NHS, sildenafil

• National Institute for Health and Care Excellence, fertility problems and pulmonary hypertension guidance

• World Health Organization, substandard and falsified medical products

• Central Drugs Standard Control Organisation, Government of India, approved indications and prescribing information

• Peer-reviewed literature on sildenafil in assisted reproduction and the STRIDER trial programme

This article is for general information and is not a substitute for professional medical advice. Alivher is a prescription medicine. Do not start, stop or change the dose without your doctor, and seek emergency care for chest pain, sudden vision or hearing loss, or an erection lasting more than four hours.

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