Hi Pippa,
Your conversation with Emma above caught my eye and this is my take. Important questions–such as those having to do with how or when to take your supplements to maximize nutritional benefit–are often neglected for the “if I take it, it’s good for me” mentality. Emma has pointed out that timing supplements appropriately and being aware of possible interactions (with medications or other supplements) can not only help you optimize your supplement’s benefit but also avoid side effects which is true. Zinc is best taken 1 hour before or 2 hours after meals, according to the Mayo Clinic, but may lead to gastrointestinal distress if taken on an empty stomach (likely if meals were small). If stomach upset occurs, take zinc with a meal.That is, try to avoid supplementing with zinc either during or shortly before/after dairy consumption.
Thanks,
Voxy