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 iHerb Customer on August 19 2012 | Verified Purchase
I have been taking this for 50 days. I have done a zinc tally test to see if my levels have risen after this amount of time, and the test shows no improvement from baseline. I don't recommend this product
Posted by iHerb Customer on May 27 2014 | Verified Purchase
Useless for various health issues that my husband and I have, otherwise alleviated by zinc. Apart from being useless, it is also makes both of us nauseated. Zinc picolinate, on the other hand, helps a lot.
Posted by Insanity on June 10 2016 | Verified Purchase
If you live in Central America, do not order by DHL, they charges a LOT for get your purchase, I had to lost it.
Posted by iHerb Customer on April 8 2014 | Verified Purchase
Makes me nauseous and have been sick from taking it. Must be taken with food! It does not say this on the packaging.
Posted by LouLou on December 1 2012 | Verified Purchase
Zinc supplements often make me feel sick but this one made me vomit. Never again.
Posted by iHerb Customer on April 12 2013 | Verified Purchase
No differnce noticed, like a lot of vitamins . . HOW CAN YOU REALLY TELL!
Posted by iHerb Customer on March 4 2013 | Verified Purchase
Posted by iHerb Customer on March 31 2017 | Verified Purchase
Good morning, I have not received my product yet.
Posted by iHerb Customer on August 24 2014 | Verified Purchase
This must be a joke! I have not even received the product. How are they asking me a rating? Okay. Evaluating So today would be VERY bad, because the products simply do not reach their customers. Remembering that my order was made on July 06. Disappointing.
Posted by iHerb Customer on October 5 2016 | Verified Purchase
Já não sei o que fazer, porque faz mais de 30 dias e não chega mais. Entrega muito demorada. Até hj 18 de outubro não recebi. Não chega e nem voce tem satisfação.
1-10 of 19 total