Hoppa till huvudinnehåll

Kan jag ta Glucomannan och Nexplanon tillsammans?

Guide för läkemedelsinteraktioner

Glucomannan is a type of fibre that can slow down or reduce how much of your contraceptive medication is absorbed into your bloodstream. This could potentially make the Nexplanon implant less effective at preventing pregnancy.

Varför detta händer

Glucomannan is a highly absorbent fibre that forms a thick gel in the stomach and intestines. This gel can trap other medications (like the hormones released by Nexplanon) or slow down the rate at which they enter the blood. While Nexplanon is an implant, the hormones it releases still circulate through the body and can be affected by changes in gut absorption and 'enterohepatic circulation' (the way hormones are recycled between the liver and the gut).

Vad du bör göra

To be safe, you should take glucomannan at least 1 hour after or 4 hours before taking any other oral medications. However, because Nexplanon releases hormones continuously, it is best to speak with your GP or pharmacist before using glucomannan regularly. If you decide to use both, monitor for any breakthrough bleeding or spotting, which could be a sign that hormone levels are fluctuating.

Viktiga försiktighetsåtgärder

Swallowing difficulties or inadequate fluid intake

Glucomannan must be taken with at least 1-2 glasses of water. Without enough liquid, it can swell and block your throat or oesophagus, posing a serious choking risk. Do not take this if you have ever had difficulty swallowing.

Use of enzyme-inducing medicines (e.g., St John’s Wort, certain epilepsy or HIV drugs)

Certain medicines and herbal remedies can make the Nexplanon implant significantly less effective, leading to unintended pregnancy. You must use an additional barrier method (like condoms) while taking these medicines and for 28 days after stopping them.

Bröstcancer

You must not use Nexplanon implant if you have, or have ever had, breast cancer, as the hormones may encourage the growth of certain tumours.

Unexplained vaginal bleeding

If you have vaginal bleeding that has not been explained by a doctor, you must not have the Nexplanon implant inserted until the cause is found.

Diabetes

Glucomannan can significantly lower blood sugar levels. If you are taking medication for diabetes, your dose may need adjustment to prevent hypoglycaemia (low blood sugar).

Leversjukdom

Do not use Nexplanon if you have severe liver disease or a history of liver tumours, as the implant is processed by the liver.

Varningar för mat och dryck

Alkohol

It is best to avoid or strictly limit alcohol while using hormonal contraceptives. Alcohol can impair your judgement and may increase the risk of side effects like dizziness or nausea.

It is best to avoid or strictly limit alcohol while taking glucomannan. Alcohol can contribute to dehydration, which increases the risk of the supplement causing a blockage in your digestive system.

Water / Fluids (General)

You must take glucomannan with plenty of water (at least 1 to 2 glasses) to ensure it reaches your stomach. There is a risk of choking or blockage in the throat or oesophagus if it is swallowed without enough liquid. Do not take it immediately before going to bed.

Användning av andra läkemedel

Tar du flera mediciner? Vår Interaktionskontroll för läkemedel hjälper dig att kontrollera om dina receptbelagda läkemedel, receptfria läkemedel och kosttillskott är säkra att ta tillsammans. Sök enkelt efter dina läkemedel för att se potentiella interaktioner och vad du kan göra åt dem.

Ansvarsfriskrivning

Denna information är endast avsedd för allmän utbildning och bör inte användas som en ersättning för professionell medicinsk rådgivning. Rådfråga alltid din läkare, apotekare eller annan kvalificerad vårdpersonal innan du fattar beslut om dina mediciner. Individuella omständigheter kan variera, och endast en vårdpersonal som känner till din medicinska historia kan ge personlig vägledning.

Artikelhistorik

Informationen på denna sida är skriven och granskad av kvalificerade kliniker.
  • 25 jan 2026 | Ursprungligen publicerad

Delta i konversationen

Dela dina tankar eller erfarenheter med andra i vår patientgemenskaper.

Ansvarsfriskrivning: The views expressed in the community do not represent medical advice. For any health concerns, consult your GP or healthcare provider.

Onlineapotek, behandlingar och hälsotjänster

Enkel tillgång till pålitliga behandlingar och hälsotjänster online.

Common conditions

Get help with common conditions through the NHS, without a GP appointment.

Book your free Pharmacy First appointment

Anmäl dig till Patientens nyhetsbrev

Din veckovisa dos av tydliga, pålitliga hälsoråd - skrivna för att hjälpa dig känna dig informerad, självsäker och i kontroll.

Vänligen ange en giltig e-postadress

Genom att prenumerera accepterar du våra Sekretesspolicy. Du kan avsluta prenumerationen när som helst. Vi säljer aldrig dina uppgifter.