Halloween treats could pose serious health risks for people taking certain medications, warns clinical pharmacist Kiran Jones of Oxford Online Pharmacy. The danger lies not in sugar content but in interactions between sweets and drugs, which can exacerbate side effects or counteract the medication's purpose.
Individuals on Monoamine Oxidase Inhibitors (MAOIs) for depression, anxiety, or Parkinson's disease should avoid aspartame, an artificial sweetener found in sugar-free candies, ice cream, jellies, cereals, and fizzy drinks. Aspartame can cause excessive neurotransmitter accumulation, leading to hypertension, headaches, anxiety, and insomnia.
Caffeine in chocolate-based sweets or coffee-flavoured candies can intensify the effects of ADHD drugs like Adderall while undermining SSRIs and beta-blockers. This may result in heart palpitations, insomnia, anxiety, elevated cortisol, and increased risk of strokes or heart attacks.
Liquorice sweets contain glycyrrhizin, which can cause potassium loss and sodium retention, raising blood pressure and counteracting blood pressure medications, diuretics, and antiarrhythmics. Even small regular amounts may lead to uncontrolled hypertension or worsened heart rhythm issues.
For those taking antihistamines, food colourings in sweets like M&Ms and Skittles can stimulate histamine release, reducing medication effectiveness and potentially triggering allergic reactions such as hives, itching, and swelling.



