L-OptiZinc is the only high-potency zinc supplement FDA approved safe for human nutrition. L-OptiZinc is also an approved form of zinc for use in the EU in food supplements. In general, zinc is an essential mineral involved in regulating a large amount of enzymes in the body. It is known as an antioxidant and immune boosting supplement, and is most commonly supplemented to reduce the frequency of sickness and to support optimal testosterone levels. Zinc is highly involved in many enzyme systems in the body. Keeping normal zinc levels helps with the maintenance of these enzyme systems and acts as a hormonal and immune system aid. High dose zinc in response to the common cold (not taken preventatively, but only at the onset of sickness) appears to be effective in reducing the duration and severity of sickness. Zinc is also known to be circulating at lower levels in persons with acne relative to those without, and it is thought to be therapeutic by reducing the migration of immune cells to the skin and possibly reducing the effects of androgens on the skin. A number of trials using zinc for acne control note that standard to high supplemental dosages have a modest protective effect. L-OptiZinc is a forms of methionine-bound zinc that increase the bioavailability of zinc. Methionine is the amino acid best absorbed by the body. L-OptiZinc is standardized to 20% zinc, consists of zinc bound to the more bioavailable "L" form of methionine. Some preclinical studies show that L-OptiZinc is absorbed better, retained longer and are more effective than other zinc supplements tested. Taking everything into account, I highly recommend this high quality product manufactured by Now Foods with reasonable price offered by iHerb. A single dose per day is what you need. I hope you'll find my review helpful to you. I am a strong advocate on scientific medical research and evidence-based information, and constantly want to differentiate between marketing hyperbole and real world effects. If you like my review, please kindly click ‘Yes’. And also, please feel free to check out my page for more reviews by clicking my name 3827GreenWood at the top of this review. Best wishes and good health to everyone!
Posted by thenourishedlife on Nov 28, 2012 | Verified Purchase
I've tried several different zinc products over the years to help with my adult acne. This product is mildly helpful, and doesn't upset my stomach if I take it with a meal. However, it doesn't really compare to Jarrow Formula Zinc Balance, which I have found immensely helpful in clearing my skin. I will definitely switch back to Zinc Balance.
Posted by iHerb Customer on Jun 02, 2012 | Verified Purchase
I really can't take this zinc for a long period of time, because it makes me nauseous every time. Even if I take it with food, it doesn't matter. Zinc gluconate makes me less nauseous, but maybe that is only a sign that it isn't absorbed as well an this form is. So I really can't comment on the benefits, as I want to take it, but it's to hard on me to go through nausea every morning.
Posted by Umbridge on Jan 27, 2011 | Verified Purchase
This product makes me nauseous unless I take it later in the day and immediately after I've eaten. I've had this problem with other zinc supplements, but not quite as bad as this one. If you've taken zinc before and never had any problems, then go for it!
Posted by iHerb Customer on Dec 25, 2015 | Verified Purchase
Posted by iHerb Customer on Feb 06, 2009 | Verified Purchase
Have been using for half a month and although this is a short time I haven't noticed anything special. Benefits might be more noticable after a longer period.
Posted by iHerb Customer on Aug 27, 2017 | Verified Purchase
I can't say any good things about this item, because it wasn't delivered to me. Twice. And IHerb don't want to make refund to me at second time. (On first - they did)
Posted by iHerb Customer on Sep 28, 2016 | Verified Purchase
Until moment my product did not come, last update was on 05/09 almost a month. Please check.
Posted by iHerb Customer on Apr 20, 2015 | Verified Purchase
I had one bottle of this and switched to their Zinc Glycinate. Easier to swallow and no smell
Posted by iHerb Customer on Jan 06, 2015 | Verified Purchase
Tras un mes tomandolo
Posted by Trinity on May 10, 2014 | Verified Purchase
It's good, but 2 stars down for the fillers - one for the magnesium stearate and another one for the rice flour. I prefer to pay more for a natural product.
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