Search results for (2025). Melatonin: How and when to take it. Retrieved from NHS UK Health A-Z.

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• Taking promethazine with other medicines and herbal supplements

  NHS medicines information on possible interactions with promethazine and other medicines, herbal remedies and supplements.

• Taking diltiazem with other medicines and herbal supplements

  NHS medicines information on possible interactions with diltiazem and other medicines, herbal remedies and supplements.

• Taking olanzapine with other medicines and herbal supplements

  NHS medicines information on possible interactions with olanzapine and other medicines, herbal remedies and supplements.

• Taking bisacodyl with other medicines and herbal supplements

  NHS medicines information on possible interactions with bisacodyl and other medicines, herbal remedies and supplements.

• Taking perindopril with other medicines and herbal supplements

  NHS medicines information on possible interactions with perindopril and other medicines, herbal remedies and supplements.

• Pregnancy, breastfeeding and fertility while taking or using sequential combined hormone replacement therapy (HRT)

  NHS medicines information on sequential combined HRT and whether you can take it while pregnant or breastfeeding.

• Anaphylaxis

  NHS information about anaphylaxis, including symptoms, when to get help, treatment and prevention.

• Haemophilia

  Find out about haemophilia, including symptoms, what causes it, how it's treated and when to get medical help.

• Medicines A to Z

  Find out how your medicine works, how and when to take it, possible side effects and answers to your common questions.

• Worms in humans

  Find out about worm infections in humans, including what different types of worms look like, when to get medical help, and how to treat and prevent infections.