Lysine for Anxiety and Stress: What 4 Trials Found
3 human trials linked lysine to calmer stress responses, but 2 gave it with arginine. Doses, cortisol results, who was studied and the safety notes.
Read articleAmino Acids & Sports Nutrition
Practical guides on supplements, herbs and natural health from the Remedy's Nutrition team.
-
-
Foods High in Lysine: Best Sources, Vegan Options and How Much You Need
Parmesan, tuna and chicken lead at 2.6 to 3.3 g of lysine per 100 g. Vegan sources ranked, the 30 mg per kg need, and why cereals run short.
Read article -
Lysine Side Effects: Kidneys, Calcium and Who Should Avoid It
71 studies found mainly mild stomach symptoms. The cautions: 1 kidney damage case, kidney disease, calcium, gentamicin in rats and no pregnancy data.
Read article -
How Much Lysine to Take Per Day: Trial Doses and the HCl Question
Cold sore trials used 312 to 3,000 mg of lysine a day. Lysine HCl is about 80% lysine, so labels differ. Doses by goal, timing and the 6,000 mg level.
Read article -
Lysine vs Arginine: Does the Ratio Really Matter for Herpes?
The lysine to arginine ratio comes from 1964 cell work, and no trial tested the diet alone. What people eat, USDA food ratios, and what is unproven.
Read article -
Lysine for Cold Sores and Herpes: Every Trial, by Dose
Lysine at 1,000 to 1,200 mg a day mostly failed for cold sores; 3,000 mg helped in 1 trial. All 8 trials, the Cochrane verdict and what it means.
Read article -
What Is L-Lysine Good For? Benefits, Evidence and Limits
Lysine is an essential amino acid sold mainly for cold sores. Its trials split by dose, the newest is from 1987, and Cochrane found no prevention effect.
Read article -
Leucine Side Effects: Upper Limits, Diabetes Medicines and MSUD
Leucine is well tolerated up to about 35 g a day. The cautions: maple syrup urine disease, diabetes medicines, and ammonia at very high intakes.
Read article -
Leucine vs BCAA vs Whey vs HMB: Which One Fits Your Goal
Whey gives all 9 essential amino acids, leucine 1, BCAAs 3 and HMB 0. Only 5% of leucine becomes HMB. Mechanism, trials and cost per gram compared.
Read article -
How Much Leucine Per Day? Requirements, Trial Doses and Capsules
Adults need about 39 mg of leucine per kg a day; trials added 2 to 10 g; the cautious limit is about 35 g. All of it converted into 1 g capsules.
Read article -
Leucine for Older Adults: Sarcopenia and What Actually Helps
Older muscle needs about 0.40 g of protein per kg per meal. Leucine helps in short studies; over months, training, protein and vitamin D do more.
Read article -
Leucine-Rich Foods and the 2.5 to 3 g Meal Threshold
25 g of whey protein gives 2.7 g of leucine; egg and soy protein need about 40 g. Food tables, the threshold debate, and where a 1 g capsule fits.
Read article -
Does Leucine Build Muscle? Acute Synthesis vs 13 Long Trials
Leucine raises muscle protein synthesis for hours, but 9 of 13 trials lasting 8+ weeks found no added muscle or strength. Every trial, dose and result.
Read article -
What Is L-Leucine? Benefits, the Trial Record and What 1 Gram Does
Leucine switches on muscle protein synthesis within hours, yet 9 of 13 long trials of leucine alone found no extra muscle. What it does and who it suits.
Read article -
L-Carnitine for Exercise: What the Pooled Evidence Measured
The mechanism is real and the endpoints are not what a training audience assumes. Four pooled analyses measured body composition, not performance.
Read article -
L-Carnitine and Male Fertility: Parameters Versus Pregnancy
20 systematic reviews cover this. The distinction that matters is between sperm parameters and pregnancy or live birth.
Read article -
L-Carnitine Dosage: How Much, and Capsule or Liquid
Trials used roughly 1 to 3 grams a day. Two 2021 reviews added dose-response modelling because a single average was hiding the variation.
Read article -
L-Carnitine vs Acetyl-L-Carnitine: What Separates Them
One acetyl group changes where the molecule goes and what it was studied for. Evidence for one form does not transfer to the other.
Read article -
L-Carnitine Side Effects and the TMAO Question
Side effects are mild. The bigger question is a pathway with 539 papers behind it, where gut bacteria turn carnitine into TMAO.
Read article -
Does L-Carnitine Help You Lose Weight? Four Meta-Analyses Answered
Four meta-analyses have pooled this exact question, covering 9 trials and 911 adults in one. The effect is modest, and the reviewers say so themselves.
Read article -
What Is L-Carnitine? Benefits, Evidence, and the TMAO Question
Carnitine has 991 clinical trials behind it and 539 papers on a pathway sellers never mention. What it does, and both halves of the evidence.
Read article -
Do You Need BCAAs If You Eat Enough Protein?
Most BCAA trials never recorded what participants ate, which undermines the whole literature. What food already supplies, and when a capsule still fits.
Read article -
BCAAs for Muscle Soreness and Recovery
The one athletic claim that survives review, stated in full: trained subjects, doses up to 255 mg per kg, moderate damage, and not dosed only after.
Read article -
BCAA Side Effects and Safety
The best adverse-event data come from 18 clinical trials in 934 adults, not from sports studies. Kidneys, creatinine and liver answered precisely.
Read article -
BCAA Dosage and Timing
A 55-fold spread across 22 studies means no established dose exists. The one figure with conditions attached, and what the label arithmetic shows.
Read article
