Epilim contains sodium valproate (valproic acid), used to control epilepsy and as a mood stabiliser in bipolar disorder. It comes as tablets, slow-release tablets, syrup and injection. It must not be used in pregnancy or by anyone who could become pregnant without a pregnancy prevention programme, because it causes serious harm to a developing baby.

What is Epilim?

Epilim contains sodium valproate, listed as valproic acid, and is Schedule 3 in South Africa:

Product	Contains
Epilim Crushable	Valproate 100 mg tablet
Epilim EC 200 / EC 500	Valproate 200 mg / 500 mg enteric-coated tablet
Epilim CR	Valproate 200, 300, 500 mg slow-release
Epilim Sugar Free	Valproate 200 mg/5 ml syrup
Epilim Intravenous	Valproate 400 mg/4 ml injection

Do not switch between formulations without medical advice. Standard and slow-release forms release valproate at different rates, and swapping them can destabilise seizure control.

A data note: some listings show promethazine, ephedrine and other unrelated substances against one Epilim tablet. Those are database errors — every other entry in the range lists valproate alone, and none of those ingredients belong in an anti-epileptic. Epilim is a valproate product. Confirm against your own pack and its leaflet.

Valproate works through several mechanisms at once, which is why it is effective across such different conditions. It increases GABA, the brain’s main calming neurotransmitter; it blocks voltage-gated sodium channels, reducing repetitive nerve firing; and it affects calcium channels. The overall result is reduced excessive electrical activity in the brain.

It is a broad-spectrum anti-epileptic — effective across most seizure types, which is unusual and makes it valuable where the seizure type is unclear or mixed.

What is Epilim commonly used for?

Epilepsy — generalised seizures, absence seizures, myoclonic seizures, focal seizures and mixed types. Its main use.
Bipolar disorder, particularly manic episodes and as a mood stabiliser.
Migraine prevention, in some cases.
Status epilepticus, using the intravenous form in hospital.

It controls seizures rather than curing epilepsy. Treatment is usually long term, and consistent daily dosing matters — missed doses are a common cause of breakthrough seizures.

Never stop it abruptly. Sudden withdrawal can cause seizures, including prolonged seizures that are themselves dangerous. Any change must be planned with a doctor.

How Epilim fits into this medicine category

Group	Examples	Typical role
Broad-spectrum anti-epileptics	Valproate (Epilim), lamotrigine, levetiracetam	Most seizure types
Sodium channel blockers	Carbamazepine, phenytoin	Focal and generalised tonic-clonic seizures
Benzodiazepines	Clonazepam, diazepam	Acute seizures, status epilepticus
Gabapentinoids	Pregabalin	Add-on epilepsy, nerve pain
Mood stabilisers	Valproate, lithium, carbamazepine	Bipolar disorder
Antipsychotics	Risperidone	Mania, psychosis

See the mental health, nerve and neurological medicines hub.

What to check before using Epilim

Valproate and pregnancy — the most important warning attached to this medicine.

Valproate taken in pregnancy causes:

Major birth defects in roughly 1 in 10 babies exposed, including spina bifida, heart, limb and facial defects.
Neurodevelopmental disorders in around 3 to 4 in 10 children exposed — lasting effects on learning, intelligence, speech and behaviour, and an increased likelihood of autism.

These risks are far higher than for other anti-epileptics, and the harm often occurs before a pregnancy is recognised.

Because of this, valproate must not be used by anyone able to become pregnant unless there is no effective alternative and a pregnancy prevention programme is in place — meaning highly effective contraception, full counselling on the risks, and regular review.

If you are taking Epilim and could become pregnant, and nobody has discussed this with you, raise it at your next appointment. If you become pregnant while taking it, contact your doctor immediately — but do not stop the medicine on your own. Uncontrolled seizures are themselves dangerous to both mother and baby, so this needs urgent medical guidance rather than an abrupt stop.

Men should also discuss planning a pregnancy with their doctor, as precautionary guidance has been issued regarding paternal exposure.

Also tell your doctor or pharmacist if you:

Have liver disease, or a family history of serious liver problems. Valproate is contraindicated in some.
Have a known or suspected mitochondrial disorder, particularly POLG mutations, where valproate can cause fatal liver failure.
Have a urea cycle disorder.
Have pancreatitis, or a history of it.
Have a bleeding or clotting disorder, or are due for surgery.
Have kidney disease or lupus.
Are breastfeeding.
Take lamotrigine — valproate raises its levels substantially and increases the risk of a serious rash.
Take warfarin, aspirin, carbamazepine, phenytoin, phenobarbital, carbapenem antibiotics (which can sharply reduce valproate levels), or olanzapine.

Expect blood tests, particularly liver function and full blood count in the first months.

Possible cautions and when to ask a pharmacist or doctor

Common effects are nausea, stomach upset, tremor, drowsiness, weight gain, increased appetite, hair thinning (which usually regrows, sometimes curlier) and temporary hair loss.

Seek medical attention urgently if you or those around you notice:

Nausea and vomiting, loss of appetite, abdominal pain, unusual tiredness, drowsiness, jaundice or swelling — possible liver failure. This is rare but can be fatal, is most likely in the first six months, and is a greater risk in children under three. Do not wait.
Severe abdominal pain with vomiting — possible pancreatitis, which can also be life-threatening.
Confusion, marked drowsiness, unsteadiness or a change in mental state — possible high ammonia, which can occur even with normal liver tests.
Unusual bruising or bleeding, or bleeding that will not stop.
New or worsening depression, or thoughts of self-harm or suicide. Anti-epileptics carry a small increased risk.
A rash, particularly with fever, blistering or mouth sores.
Increased seizure frequency, or a change in seizure pattern.
Swelling of the face, lips or tongue.

Do not stop taking it because of side effects without speaking to your doctor — abrupt withdrawal risks seizures. Most effects can be managed by adjusting the dose or the formulation.

Tell your doctor if you are planning pregnancy, become pregnant, are struggling with weight gain, or notice any change in mood or thinking.

Related medicine guides

Frequently asked questions

What is Epilim used for? Controlling epilepsy across most seizure types, and as a mood stabiliser in bipolar disorder, particularly manic episodes. It contains sodium valproate.

What is Epilim 200 used for? A common tablet strength for epilepsy and bipolar disorder. The dose is built up gradually and set by your doctor.

What is Epilim 500 mg used for? The higher strength, used for the same conditions where a larger dose is needed.

What is Epilim syrup used for? The liquid form, used where tablets are unsuitable — commonly in children or people with swallowing difficulty. It is dosed by weight in children.

Can I take Epilim in pregnancy? No, other than in exceptional circumstances under specialist care. Valproate causes birth defects in about 1 in 10 exposed babies and developmental disorders in 3 to 4 in 10. If you become pregnant, contact your doctor immediately — but do not stop it yourself.

Is Epilim a sedative? No. It is an anti-epileptic and mood stabiliser. It can cause drowsiness, but it does not work like a sedative.

Can I stop taking it if I have had no seizures? No. Being seizure-free usually means it is working, and stopping abruptly can cause seizures. Any change must be planned with your doctor.

Does it cause weight gain? Weight gain and increased appetite are common. Mention it to your doctor if it becomes a problem — alternatives exist.

What Is Epilim Used For?