Ishigaki L- Glutathione - does this have a Bad Side Effects?

I'm in badly need of a  great advice for this certain situation about oral intake Glutathione, and as a customer, take note this is my first time, that i really got intrigue to try this kind of method of making skin looks fairer and whiter.

So one day, when i was having my spare time Window Shopping Online, i saw this "Ishigaki (L-Glutathione) Capsules" in its shop and plus with its Before and After effect.

which the photos makes me more interested, i message the owner of the shop right away after i saw it, but i didn't get a response from the owner yet, so i tried to google it, to really get to know what this Oral Intake Glutathione really does for the body and would it cost a Bad Side Effect too, and i also tried to find more Online Shop who offers a great price who can accomodate me in my questions, since i ask a lot first to really make sure.

And i know that you also would feel and do the same if you want to be beautiful, you also need to know what it could do while intaking it.

So here are some of my questions:1. Does this have a Bad Side Effect?

2. Ishigaki (L- Glutathione) contains 60 capsules in 1 Bottle, its good for 30 days/ 1 month. 2 capsules a day should be taken with Vitamin C, so is this the right procedure on how to intake it? each capsules contains 1000 mg, would it be okay to take 2 capsules a day?

3. If ever i consume 3-5 bottles already and i decided to stop intaking it, because i got contented on how my skin tone acheived, would i get any Bad Side Effect? would it cause anything like: pimple breakouts, blackheads, rashes or anything for the user? or could this cause or might trigger Cancer?

4. A friend of mine told me, Oral Intake Glutathione might harm the user's kidney, is this true?

5. We all know that Fake products or imitations are just around the corner, and everywhere, so does "Ishigaki l-glutathione" have fake too or imitations? and if it does how can we able to identify it?

And here's a sample photos of the "Ishigaki l-glutathione" from two different Online Shop's who sells it, so tell me, does this two photos make sense at all,.?

please what does the fake one looks?

 

So if you have stories, experienced (whether a friend of yours have used it, or your mom and dad, or even your neighbor, or yourself) about this product that you could share, please do, cOz i would really appreciate it, and it would be a big help for others too,.

Just comment below, and aside fom the questions if you have something to add on, whether a question or an answer for the questions or even the things we missed in this topic, please feel free to write it down,.Thank you So Much,..=)