Usually the worst that will happen when dietary supplements expire is they lose efficacy. I’m not sure how that would work with an amino acid, but it’s not like spoiled milk. Some medication can degrade and become toxic but only specific kinds. Most just loses efficacy, although it is usually fine long after the expiration date.
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Yes - I agree with this. There isn’t much risk I don’t think - the worst that happens is that its less effective than would normally be - and I don’t know how quickly the actual efficacy would change or degrade - especially if it was kept in a dark and reasonably cool (or moderate temperature) cupboard.
Here are some articles on this topic:
The vast majority of ingredients in supplements decompose gradually over time, which makes them less potent, but not necessarily unsafe — unless, for example, they happen to grow mold. Dr. Cooperman said that to account for the inevitable disintegration, many companies add more than the amounts of ingredients listed on the label, especially vitamins that decompose quickly, like B12 and C.
If stored away from heat, light and humidity, supplements generally last about two years after the date of manufacture before the concentrations fall below 100 percent of the amounts listed on the label. But the window is only about a year for probiotics, liquids and oils, which are more fragile.
https://well.blogs.nytimes.com/2015/07/20/ask-well-vitamin-expiration-dates/?_r=0
and
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Started 500mg L-Lysine twice daily 2 days ago - my severe thought disorder went away completely within half an hour of taking the first dose.
Keep us updated over the next few weeks and let us know your regular pattern of taking it. When do you take it? Are you taking it daily?
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So far I’m taking it twice daily (8am and 5pm).
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Can I combine
L Lysine
L Theanine
Sarcosine
Fish oil
Together?
That combination would probably be ok. There are people on the site who take 10 or more supplements and they don’t seem to run into problems with them. I was on 6 or 7 for a few years and was ok.
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Do you have an L Lysine recommendation? It seems it is for Herpes? I only heard this disease in movies 
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I wasn’t prescribed L Lysine by a dr or therapist. I merely Googled it and found that it helps some people with Sz.
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You may want to eat more foods high in Arginine like Turkey or Chicken to offset the Arginine deficiency that high amounts of Lysine causes (Arginine deficiency causes fatty liver disease.)
@mermaid1 u might try it and report to us …good luck
Lol. Herpes is quite common actually. It is a contagious viral infection which cannot be completely cured. I don’t have herpes though 
There once was a girl who wanted to make out with me, but she had herpes so I refused her…
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Interestingly, there was a trial with valcyclovir, a herpes drug, as an adjunctive to anti psychotics in people who had HSV1 (usually seen as cold sores) and it was somewhat effective.
The effect was on cognitive symptoms. The drug is fairly safe, people take it long term.
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How can you tell someone has Herpes?
You can tell when it’s active, just search herpes in google or bing images 
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why you told me to do that? 
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2/3’s of the population on earth is infected with the herpes virus. Lots of people don’t have symptoms.
I think there is more than one herpes virus . . .
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Yes there are multiple.
Plus many herpes related viruses that are not sexually transmitted, like CMV.
Hey folks!
Trying out L-Lysine tomorrow for the first time, as follows:
3g L-Lysine TWICE A DAY
Any warnings or suggestions, from those who have tried this before??
Thank you!!
xoxo
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