Supplements

Browse our collection of high-quality supplements. Each supplement has been carefully researched and documented with detailed information about benefits, safety, and evidence.

Showing 351-375 of 714 supplements

Lactobacillus Acidophilus

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Gut microbiome balance
  • Immune system support
  • Pathogen inhibition
  • Digestive health maintenance

Secondary Benefits:

  • Lactose digestion improvement
  • Cholesterol reduction
  • Vaginal health support
  • Diarrhea prevention and treatment
  • Potential allergy symptom reduction
  • Potential mental health benefits
  • Possible weight management support
  • Oral health improvement

L-Tyrosine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Cognitive performance under stress
  • Mood regulation
  • Mental alertness
  • Stress resilience

Secondary Benefits:

  • Supports thyroid hormone production
  • May help with dopamine synthesis
  • Potential benefits for attention and focus
  • May improve exercise performance in challenging conditions
  • Supports adrenal function during stress
  • May help with sleep deprivation effects

L-Valine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Muscle protein synthesis
  • Energy production during exercise
  • Tissue repair and growth
  • Nitrogen balance maintenance

Secondary Benefits:

  • Supports cognitive function
  • May enhance exercise performance
  • Contributes to immune function
  • Helps regulate blood glucose levels
  • Supports liver detoxification processes
  • May aid in stress recovery

L-Tryptophan

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Mood regulation
  • Sleep quality improvement
  • Stress and anxiety reduction
  • Cognitive function support

Secondary Benefits:

  • Supports protein synthesis
  • May help with depression
  • Contributes to niacin (vitamin B3) synthesis
  • Supports immune function
  • May help reduce carbohydrate cravings
  • Potential pain-relieving effects

L-Theanine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Stress reduction
  • Cognitive function
  • Sleep quality improvement

Secondary Benefits:

  • Immune support
  • Blood pressure regulation
  • Neuroprotection
  • Attention enhancement

L-Threonine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Digestive health support
  • Immune system function
  • Collagen and elastin formation
  • Liver function support

Secondary Benefits:

  • Supports protein synthesis
  • Contributes to intestinal mucin production
  • Helps maintain gut barrier integrity
  • May support neurological function
  • Assists in fat metabolism
  • Contributes to wound healing

L-Serine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Neuroprotection
  • Cognitive function support
  • Cellular membrane integrity

Secondary Benefits:

  • Brain development
  • Neurotransmitter synthesis
  • Phospholipid formation
  • Immune function
  • Muscle metabolism

L-Taurine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Cardiovascular health
  • Neuroprotection
  • Antioxidant support

Secondary Benefits:

  • Bile acid conjugation
  • Osmoregulation
  • Calcium signaling
  • Insulin sensitivity
  • Exercise performance
  • Eye health

L-Selenocysteine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Antioxidant protection
  • Immune system support
  • Thyroid function regulation

Secondary Benefits:

  • Detoxification support
  • Cardiovascular health
  • Cognitive function
  • Cancer risk reduction

L-Proline

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Collagen formation and skin health
  • Joint and connective tissue support
  • Wound healing acceleration
  • Antioxidant protection

Secondary Benefits:

  • Supports cardiovascular health
  • May help with osteoarthritis
  • Contributes to muscle tissue maintenance
  • Potential benefits for skin elasticity and aging
  • May support immune function
  • Helps maintain gut barrier integrity

L-Pyrrolysine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Research compound only
  • No established benefits in humans

Secondary Benefits:

  • Potential research applications in protein engineering
  • Theoretical applications in biotechnology

L-Phenylalanine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Neurotransmitter production
  • Cognitive function support
  • Mood regulation
  • Pain management

Secondary Benefits:

  • Supports protein synthesis
  • May help with depression and anxiety
  • Potential analgesic effects
  • Supports thyroid hormone production
  • May enhance alertness and focus
  • Contributes to skin health

L-Ornithine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Ammonia detoxification
  • Liver health support
  • Exercise recovery

Secondary Benefits:

  • Wound healing
  • Immune function
  • Growth hormone support
  • Stress reduction
  • Sleep quality improvement

L-Norleucine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Protein synthesis support
  • Metabolic regulation

Secondary Benefits:

  • Potential anticancer properties
  • Protein misfolding prevention
  • Leucine mimetic

L-Norvaline

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Cardiovascular health
  • Endothelial function
  • Blood pressure regulation

Secondary Benefits:

  • Exercise performance
  • Cognitive function
  • Immune modulation

L-Methionine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Antioxidant protection
  • Detoxification support
  • Methylation processes
  • Cellular repair and maintenance

Secondary Benefits:

  • Supports liver health
  • Promotes healthy hair, skin, and nails
  • Assists in heavy metal chelation
  • Supports immune function
  • May help reduce homocysteine levels
  • Contributes to joint health

L-Leucine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Muscle protein synthesis stimulation
  • Prevention of age-related muscle loss (sarcopenia)
  • Metabolic health regulation
  • Cellular energy production

Secondary Benefits:

  • Wound healing acceleration
  • Blood glucose regulation
  • Immune system support
  • Cognitive function support
  • Exercise recovery enhancement
  • Appetite regulation

L-Lysine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Collagen formation and tissue repair
  • Immune system support
  • Antiviral properties
  • Calcium absorption and retention

Secondary Benefits:

  • Supports protein synthesis
  • May help manage herpes simplex virus outbreaks
  • Promotes wound healing
  • Supports hormone and enzyme production
  • May help reduce anxiety
  • Supports energy production

L-Isoleucine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Muscle protein synthesis
  • Blood glucose regulation
  • Energy production
  • Immune function support

Secondary Benefits:

  • Wound healing
  • Hemoglobin formation
  • Supports recovery from physical stress
  • Helps maintain nitrogen balance
  • May improve exercise performance
  • Supports liver health

L-Homocysteine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • None - elevated levels are associated with health risks

Secondary Benefits:

  • None - primarily monitored as a biomarker rather than used as a supplement

L-Hydroxyproline

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Skin health support
  • Connective tissue maintenance
  • Collagen synthesis support

Secondary Benefits:

  • Joint health
  • Wound healing support
  • Antioxidant properties
  • Potential anti-aging effects

L-Glycine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Sleep quality improvement
  • Cognitive function support
  • Anti-inflammatory effects
  • Antioxidant protection

Secondary Benefits:

  • Supports collagen synthesis
  • May improve joint health
  • Contributes to glutathione production
  • Supports muscle growth and recovery
  • May help regulate blood sugar
  • Potential neuroprotective effects

L-Histidine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Antioxidant protection
  • Anti-inflammatory effects
  • Tissue repair and maintenance
  • Hemoglobin synthesis

Secondary Benefits:

  • Supports cognitive function
  • Promotes joint health
  • Aids in muscle development and repair
  • Supports immune system function
  • Helps maintain myelin sheath integrity
  • Assists in detoxification processes

L-Glutamine

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Intestinal health support
  • Immune system function
  • Muscle recovery and growth
  • Antioxidant protection

Secondary Benefits:

  • Supports gut barrier integrity
  • May reduce exercise-induced muscle soreness
  • Helps maintain acid-base balance
  • Supports liver detoxification
  • May improve glucose metabolism
  • Potential benefits for inflammatory conditions

L-DOPA

Evidence: 4/5 i
Safety: 5/5 i

Primary Benefits:

  • Dopamine restoration in Parkinson's disease
  • Motor function improvement

Secondary Benefits:

  • Cognitive function support
  • Mood regulation
  • Growth hormone stimulation
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