L-Lysine
Solid evidence for collagen. Not a miracle worker, but genuinely useful for the right person.
Verdict
7/10 Solid
Evidence
Grade B / 100+ Studies
The No-BS Summary
8 things. 60 seconds. Everything you need.
WHAT IT DOES
Collagen backbone. Also fights cold sores.
DOES IT WORK?
7/10 Solid. Good pick. Essential amino acid critical for collagen synthesis. Popular for herpes prevention. Often deficient in grain-heavy diets.
HOW MUCH TO TAKE
1-3g daily, higher during outbreaks
COST
Budget-friendly. $20-35/month for quality brands.
FIRST 24 HOURS
Don't expect miracles on day one. It's building in your system.
AFTER A FEW WEEKS
Most people notice something by week 2-3.
SAFETY
Safe for most people. No red flags at normal doses.
HOW IT FEELS
Cold sore sufferers notice fewer outbreaks. Others feel nothing.
QUICK ANSWERS
+ 4 more questions
DOSE-RESPONSE CURVE
How effective is creatine monohydrate at different doses? Here's what the research shows.