Does Caffeine Affect Huperzine A?

Use extra care with this combination

The short answer

Both caffeine and huperzine A are CNS stimulants. Huperzine A inhibits acetylcholinesterase; combined with caffeine's adenosine blockade, this may cause overstimulation, headache, and GI distress.

How to arrange timing

Use caution combining these. Start with low doses and monitor for side effects.

Reference

Reference noted for this food and supplement combination: Examine.com 2024

Important context

The effect can also change with food amount, supplement dose, product formulation, health conditions, and medication use. Ask a doctor or pharmacist first if you take medication, are pregnant or breastfeeding, or have a chronic condition.