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Zinc is a mineral your body needs every day, but cannot store in large quantities. This capsule from NOW Foods contains 50mg of zinc in the form of zinc picolinate: zinc bonded to picolinic acid. This is one of the better-known forms of zinc in supplements. It is a high dose per capsule, intended for those who consciously choose a substantial dose of zinc for a limited period.
Zinc is never found alone in supplements. It is always bonded to another substance, a so-called carrier. In zinc oxide, that is oxygen; in zinc citrate, it is citric acid; and in zinc picolinate, it is picolinic acid. Picolinic acid is a substance your body produces itself from the amino acid tryptophan. It has the property of being able to hold minerals firmly, a bit like a clip.
Zinc is involved in hundreds of enzymes, proteins that initiate chemical reactions in your cells. That is why it is involved in many different bodily functions. Zinc contributes to the normal function of the immune system. Zinc also contributes to the maintenance of normal skin, hair, and nails. In addition: zinc contributes to the maintenance of normal testosterone levels in the blood. Furthermore, zinc contributes to normal cognitive function and to the protection of cells against oxidative damage. And zinc plays a role in the cell division process, which explains why it is needed in so many tissues.
The reference intake for zinc is 10mg per day. One capsule therefore provides 50mg, or 500% of that value. The European Food Safety Authority (EFSA) sets an acceptable upper limit of 25mg of zinc per day from food and supplements combined for adults. This capsule is clearly above that. That is why NOW Foods states on the label that the product is not intended for long-term use. In practice, this means: you use this strength for a defined period, for example a few weeks, and not for years as a daily staple. If you are looking for a zinc supplement for daily, long-term use, a lower dosage is more suitable. Good to know: zinc contributes to normal protein synthesis and to the normal metabolism of macronutrients, so it is a mineral that is always working in the background.
In short: a zinc supplement with zinc picolinate and a high dose in a small plant-based capsule. With 60 pieces in the bottle, you have exactly enough for a defined period, without a bottle sitting around for months.
One of the well-absorbed forms of zinc, instead of the cheaper zinc oxide.
A high dose for a defined period, without having to swallow multiple capsules a day.
A short list of ingredients: zinc picolinate, rice flour, a cellulose capsule and a little magnesium stearate.
Not produced with yeast, wheat, gluten, soy, milk, egg, fish, shellfish or nuts.
* Percentage van de referentie inname volgens Verordening (EU) Nr. 1169/2011.
** Reference intake unknown.
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With a meal. On an empty stomach, zinc can cause nausea, especially at a dose of 50mg. Avoid taking zinc at the same time as an iron or calcium supplement, because those minerals compete with each other for absorption. Leave a few hours between them.
The reference intake for adults is 10mg per day. With a varied diet you often already get about 8 to 12mg. The European safe upper limit is 25mg per day in total. This capsule provides 50mg and is therefore intended for short-term use, not as a daily basis for years.
Zinc picolinate, zinc citrate and zinc bisglycinate are considered well-absorbed forms. Zinc oxide clearly scores lower in research. Among the well-absorbed forms, the differences are small, and your diet also plays a role. For example, phytate from whole grains and legumes can inhibit zinc absorption.
For long-term daily use, yes. The EFSA upper limit for adults is 25mg per day from food and supplements combined. That is why the label states that this product is not intended for long-term use. Consuming a lot of zinc over a long period can interfere with copper absorption. If you want to use zinc regularly, choose a lower dose or consult your doctor.
Picolinic acid is the carrier that the zinc is attached to. Your body produces this substance itself from the amino acid tryptophan. It holds minerals firmly, allowing the zinc to travel through your digestive system as a single compound. That is why the label says 'zinc (from zinc picolinate)': the 50mg is the amount of zinc itself, not the entire compound.
The difference lies in the carrier. In zinc picolinate, that is picolinic acid, while in zinc bisglycinate, it is two molecules of the amino acid glycine. Both forms are considered well-absorbed and are usually gentle on the stomach. Which one you choose often depends more on the dosage and the price than on major differences in absorption.
