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Selenium

Selenium is a trace mineral many New Zealanders look for to support antioxidant defences, thyroid function, and overall wellbeing. This collection brings together selenium-containing options, including one-a-day formulas and combined blends, so you can choose a product that fits your routine, goals, and preferred supplement format.

Selenium supplements in NZ are typically chosen to help top up selenium intake and support normal thyroid function, immune health, and antioxidant activity. The best option depends on how much selenium you want per day, whether you prefer a standalone selenium product or a combined formula, and any personal needs such as sleep support, senior daily coverage, or prostate support.

How to choose a selenium supplement

Daily dose (mcg): Check the label for selenium per serving and match it to your needs and professional advice (especially if you already take other supplements that may contain selenium).
Standalone vs combined support: Decide whether you want selenium on its own or as part of a broader formula (for example, options paired with magnesium for evening routines, or included within a daily senior multi style product).
Goal-led choice: Pick a product that aligns with why you’re shopping—general wellbeing, a sleep-focused routine, a comprehensive senior daily option, or a targeted prostate support blend.
Convenience and format: If consistency is your challenge, look for simple “one-a-day” style dosing, and choose a capsule/tablet format you’ll actually stick with.
Safety fit: Selenium has a narrow “too little vs too much” window—factor in other supplements, fortified foods, and any medical guidance before stacking products.

Helpful reads

FAQs

What is selenium and why do people take it?

Selenium is an essential trace mineral your body uses for antioxidant enzymes and normal thyroid function. People often take selenium supplements to help cover dietary gaps and support everyday wellbeing.

Are New Zealanders deficient in selenium?

Some New Zealanders may have lower selenium intake than people in regions with higher-selenium soils. If you suspect low intake, it’s worth discussing your diet and symptoms with a health professional rather than guessing.

How much selenium per day is recommended in NZ?

It depends on age, sex, diet, and health status, so there isn’t one “perfect” number for everyone. Use the product label as your starting point and seek professional advice if you’re combining multiple supplements.

What is a common selenium supplement dose?

Many selenium supplements are measured in micrograms (mcg) and are designed for daily use. Always follow the label directions and avoid doubling up with other products that also include selenium.

Is 200 mcg of selenium too much?

For some people it may be appropriate, and for others it may be unnecessary—context matters. Your total daily selenium (from diet plus all supplements) is what determines risk, so check everything you take and ask for guidance if unsure.

What are signs of selenium deficiency?

Symptoms can be non-specific and overlap with other issues, so self-diagnosis is unreliable. If you’re worried about low selenium, a clinician can help assess your diet, risk factors, and whether testing or supplementation makes sense.

Who should be cautious with selenium supplements?

Anyone who is pregnant or breastfeeding, managing a chronic condition, or taking regular medicines should get personalised advice before supplementing. It’s also important to be cautious if you already take a daily multi-style product that may include selenium.

Can I take selenium with other supplements?

Often yes, but you need to avoid “stacking” selenium from multiple products. If you’re using combined formulas (for example, a senior multi product, a sleep routine product with magnesium, or targeted prostate support), total up the selenium across your day.