Lymecycline is an antibiotic. It’s used mainly for acne (spots).

Lymecycline is only available on prescription. It comes as capsules that you swallow.

  • For acne, it’s usual to take lymecycline once a day.
  • Common side effects are feeling sick, stomach pain, diarrhoea and headaches. But these tend to be mild and short lived.
  • You can drink alcohol while taking lymecycline.
  • Lymecycline is not suitable for pregnant or breastfeeding women.
  • Lymecycline is not suitable for children under the age of 12 years.
    It can build up in growing teeth and permanently stain them.
  • The brand name for lymecycline is Tetralysal 300.

Lymecycline can be taken by adults and children over the age of 12 years.

Lymecycline isn’t suitable for some people. To make sure this medicine is safe for you, tell your doctor if you:

  • have ever had an allergic reaction to lymecycline or any other medicine in the past
  • have kidney problems
  • are pregnant or breastfeeding
  • have liver problems
  • have an autoimmune disease called lupus
  • have myasthenia gravis – a rare muscle-weakening disease

For acne, it’s usual to take 1 capsule of lymecycline once a day,
usually in the morning. Each capsule contains 408mg of lymecycline.

When you take it for other infections, follow your doctor or pharmacist’s instructions.

How to take it

Swallow the capsule whole, along with a glassful of water.

Like all medicines, lymecycline can cause side effects, although not everyone gets them.

Common side effects

These common side effects happen in more than 1 in 100 people. Keep
taking the medicine, but tell your doctor if the side effects bother you
or don’t go away:

  • feeling sick
  • stomach pain
  • diarrhoea
  • headaches

Serious side effects

Serious side effects are rare.

Stop taking lymecycline and tell a doctor straight away if you get:

  • yellow skin or eyes (this can be a warning sign of liver problems)
  • your skin becomes very sensitive to the sun

Serious allergic reaction

It’s possible to have a serious allergic reaction (anaphylaxis) to lymecycline.

What to do about:

  • feeling sick – try taking lymecycline with or after
    food to see if that helps ease feelings of sickness. It may also help
    if you avoid rich or spicy food while you’re taking this medicine.
  • stomach pain – try to rest and relax. Putting a hot
    water bottle on your tummy may help. If you are in a lot of pain, speak
    to your pharmacist or doctor.
  • diarrhoea – drink plenty of water or other fluids if you have diarrhoea. It may also help to take an oral rehydration drink to prevent dehydration. You can buy sachets of powder from a pharmacy which you mix with water. Don’t take any other medicines to treat diarrhoea without speaking to a pharmacist or doctor.
  • headaches – make sure you rest and drink plenty of fluids. Don’t drink too much alcohol. Everyday painkillers, such as paracetamol and ibuprofen, are safe to take with lymecycline.

Lymecycline is not normally recommended for women who are pregnant or
breastfeeding. Ask your doctor if there’s another safer antibiotic that
you can take.

There are some medicines that don’t mix well with lymecycline.

Tell your doctor if you’re taking these medicines before starting lymecycline:

  • supplements containing aluminium, bismuth, calcium, magnesium or zinc
  • indigestion remedies (antacids)
  • iron supplements
  • quinapril, a medicine for high blood pressure or heart failure
  • acne medicines containing vitamin A, such as isotretinoin
  • a blood thinner, such as warfarin
  • diuretic tablets that make you pee more, such as furosemide
  • medicines for epilepsy, such as phenytoin or carbamazepine

Mixing lymecycline with herbal remedies and supplements

There are no known problems with taking herbal remedies and supplements with lymecycline.

How does lymecycline work?