What it is
L-Histidine is a conditionally essential amino acid that plays a vital role in skin health and the transport of zinc. It is available in capsule form for adult use.
Supplement · Amino Acid
L-Histidine
500 mg · vegan · gluten-free · 60 caps
dull-skinhair-thinningpremature-aging skinconnective tissue
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How it works
L-Histidine contributes to the structural integrity of collagen and keratin, essential proteins for skin and hair. It also facilitates zinc absorption and utilization, supporting enzymatic processes critical for cellular repair and antioxidant defense.
Who should take it
Adults looking to address dull skin, hair thinning, premature ageing. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
Avoid / careful
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
When to take it
Morning
Noon
Evening
Night
How to take it
With food
Empty stomach
Before food
FAQs
Frequently asked
How long does it take to see results from L-Histidine?
Visible skin changes typically become noticeable within 8-12 weeks of consistent daily use.
Can L-Histidine help with zinc deficiency?
L-Histidine is crucial for zinc transport, potentially improving zinc status in individuals with suboptimal levels, but it is not a direct treatment for severe deficiency.
Is L-Histidine safe for long-term use?
At recommended doses, L-Histidine is generally considered safe for long-term use. However, consult a healthcare professional for personalized guidance.
Research
6 studies · 2010–2024
Evidence grade
ABCD
C · C · emerging-to-moderate human evidence for skin, hair and connective-tissue health
Editorial notes
SacredBod's longer take on L-Histidine — context the structured blocks above don't capture.
About L-Histidine
L-Histidine is a amino acid supplement used to support skin, hair and connective-tissue health. Conditionally essential amino acid for skin and zinc transport. It is available in capsule form and dosed for adults in India and internationally. As a western-tradition entry in the SacredBod catalog, it is positioned as a single-ingredient option that can be used on its own or layered into a broader protocol.
How it works
L-Histidine works through the mechanisms characteristic of its class — see the mechanism and research sections for detail. It primarily acts on the skin, hair, connective tissue, and effects are dose-dependent, typically becoming measurable within 8-12 weeks for visible skin changes. Consistency matters more than dose size for this category.
Who it’s for
Adults looking to address dull skin, hair thinning, premature ageing. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
Evidence
L-Histidine carries an evidence grade of C in the SacredBod catalog. Conditionally essential amino acid for skin and zinc transport. See the Research panel above for the underlying studies, participant counts and typical effect sizes.
Dosing & timing
Typical label dose is 500 mg in capsule form. Most adults can expect noticeable effects within 8-12 weeks for visible skin changes. Consistency matters more than a single large dose — take it daily and re-evaluate against your blood markers at 8–12 weeks.
Cautions
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
As part of the Amino Acid category, L-Histidine can be used on its own or layered into a broader protocol — see the Goes with panel for synergistic pairings.
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