Femodene Side Effects: Complete Safety Guide

What Are the Side Effects of Femodene?

Side effects are listed by how often they occur. The information below is based on the Patient Information Leaflet (PIL) and clinical data.

Common (affecting 1‑10 in 100 users)

• Nausea, stomach ache
• Weight gain
• Headaches
• Depressed mood, mood swings
• Sore or painful breasts

Uncommon (affecting 1‑10 in 1,000 users)

• Vomiting, diarrhoea
• Fluid retention (oedema)
• Migraine
• Loss of interest in sex
• Breast enlargement
• Skin rash, itching

Rare (affecting 1‑10 in 10,000 users)

• Poor tolerance of contact lenses
• Weight loss
• Increased interest in sex
• Vaginal or breast discharge

Other reported effects

Conditions that may worsen during pill use: jaundice, persistent itching, gallstones, systemic lupus erythematosus, Crohn's disease, otosclerosis, porphyria, and cervical cancer (though the link is uncertain).

When Do Femodene Side Effects Start?

Most side effects appear during the first few months of use as your body adjusts to the hormones. For example:

• Nausea and headaches: Can start within the first week of the first pack.
• Breakthrough bleeding or spotting: Often occurs in the first 1‑3 packs while the endometrium adapts.
• Mood changes: May be noticed after a few weeks.
• Breast tenderness: Typically in the first cycle.

If you start a new pack after a break, similar timing applies. Some effects (like migraine) may appear later if triggered by hormonal fluctuations.

How Long Do Femodene Side Effects Last? (Timeline)

Most common side effects are transient and resolve as your body becomes accustomed to the pill.

• Nausea, headaches, breast tenderness: Usually improve within 2‑3 cycles. Taking the pill with food can help.
• Breakthrough bleeding: Typically stops after the first few packs. If it continues beyond 3 months, your doctor may suggest a different pill.
• Mood changes: May persist in some women; if severe, consider alternative contraception.
• Weight changes: Usually stabilise after a few months. Significant weight gain is not common.

If any side effect persists beyond 3 months or is intolerable, consult your doctor. You may need a different formulation or method.

Serious Side Effects: When to Seek Medical Help

Although rare, Femodene can increase the risk of serious conditions. Seek immediate medical attention if you develop:

• Blood clots (venous or arterial): Signs include swelling/pain in one leg, sudden chest pain, breathlessness, severe headache, weakness/numbness on one side, visual loss.
• Breast cancer: Lump, skin dimpling, nipple changes.
• Liver problems: Severe upper abdominal pain, yellowing of skin/eyes (jaundice), dark urine.
• Severe allergic reaction or angioedema: Swollen face/tongue/throat, difficulty breathing, hives.
• Migraine with aura: New onset or worsening of migraine with visual disturbances.

These require immediate medical assessment. Do not take another pill until a doctor advises.

Contraindications: Who Should Not Use Femodene

Femodene is not suitable for everyone. Do not use if you have any of the following:

• Current or past blood clot in a vein (DVT, PE) or artery (heart attack, stroke).
• Known clotting disorders (e.g., Factor V Leiden, protein C/S deficiency, antiphospholipid antibodies).
• Planned major surgery or prolonged immobilisation.
• History of angina, transient ischaemic attack (TIA), or other cardiovascular disease.
• Severe diabetes with vascular complications, very high blood pressure, or severe dyslipidaemia.
• Migraine with aura (focal neurological symptoms).
• Breast cancer (current or past).
• Severe liver disease (until liver function returns to normal) or liver tumours.
• Undiagnosed vaginal bleeding.
• Allergy to any ingredient.
• Concomitant use of certain hepatitis C medications (ombitasvir/paritaprevir/ritonavir, dasabuvir, glecaprevir/pibrentasvir, sofosbuvir/velpatasvir/voxilaprevir).

If any of these apply, your doctor will recommend a non‑hormonal or progestogen‑only method.

Food and Drug Interactions with Femodene

Food interactions

There are no known interactions with any specific foods or drinks. However, taking Femodene with a meal may help reduce nausea, a common side effect.

Drug interactions

Some medicines can reduce Femodene’s effectiveness or increase the risk of side effects. Always tell your doctor, dentist, or pharmacist you are taking Femodene.

• Enzyme‑inducing drugs (accelerate hormone breakdown): rifampicin, rifabutin, some anticonvulsants (phenytoin, carbamazepine, topiramate), barbiturates, griseofulvin, St John's Wort. These may require additional contraception (e.g., condoms) during use and for 28 days after stopping.
• Certain antibiotics (e.g., rifampicin – already listed); most broad‑spectrum antibiotics do not interact, but if they cause vomiting or diarrhoea, follow missed‑pill advice.
• Hepatitis C combinations (ombitasvir/paritaprevir/ritonavir, dasabuvir, glecaprevir/pibrentasvir, sofosbuvir/velpatasvir/voxilaprevir) are contraindicated (they can increase liver enzymes).
• Antifungals like griseofulvin (enzyme inducer).
• HIV protease inhibitors and NNRTIs – may alter hormone levels; your HIV specialist will advise.

Femodene can also affect the action of other drugs (e.g., cyclosporine, lamotrigine). Dose adjustments may be needed.

Femodene Side Effects FAQs

Need a Different Contraceptive?

If Femodene’s side effects are troublesome, other options are available. Speak to a UK‑registered doctor online about switching.

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