Browse the site

Start with a goal 40 things people take supplements for — sleep, stress, joints, focus.
Home Get the app
Aloe vera

Aloe vera

What the trials found

Aloe vera has early data with direction unclear for skin moisture retention, while evidence across other outcomes does not establish a clear benefit.

Median effective dose, most-studied outcomes

Full protocol, 1 outcomes

Risk, worst reported severity

  • hepatotoxicity severe
  • digoxin major
  • antithrombotic agents moderate

What aloe vera actually does

Outcome Effect Evidence Dose Time Rank
Early research 1
More hydrated skin Early data, direction unclear Hydrated skin holds water and can feel less dry, tight, or rough.
moderate 		1 study 1 papers · n=46 — 4 wk —

Effect tiers come from native-unit MCID where available, Cohen's d otherwise.

Protocol

Dose, timing & forms

How much

There is no well-established oral dose for aloe vera across the outcomes reviewed. A controlled bowel-discomfort trial used an oral aloe preparation at 60 mL, but it did not show a meaningful overall benefit, so that protocol is not a reason to self-dose.3 For skin moisture, the useful evidence involves topical aloe gel used consistently for about 4 weeks, not an oral supplement.1

When and how long

For skin use, apply topical gel regularly as part of a daily routine, rather than expecting a one-time application to change hydration. The available skin study assessed results after weeks of use, while the oral bowel trial does not support using aloe around meals or at any particular time for digestive comfort.13 Avoid experimenting with oral aloe timing if you use digoxin or blood-thinning medication, since the interaction risk matters more than timing tweaks.2

Forms & standardisation

Keep topical inner-leaf gel separate from oral whole-leaf and latex-containing products. The skin-moisture evidence applies to gel placed on skin, not to capsules, juices, or laxative-style latex preparations.12 For a leave-on product, choose a simple topical formula and patch-test first if your skin reacts easily.

Studied range, by outcome

Outcome Studied range Median effective Duration Evidence
Ease stomach and bowel discomfort 60 mL — — 1 paper

Adverse events and drug interactions

Safety events

hepatotoxicity severe

Drug interactions

digoxin major increases toxicity
antithrombotic agents moderate increases toxicity
In context

What this is and how it works

  • One study (n=46) assessed aloe vera for skin moisture retention, but the direction of effect was unclear. 1
  • Sixteen papers reviewed here span 23 outcomes, with only one claim reaching the early-data tier.
  • Oral aloe vera lacks clear digestive benefit, with safety concerns requiring caution. 3

Aloe vera is a succulent with thick leaves that hold a clear, slippery gel. That inner gel shows up in skin products, while substances nearer the outer leaf, often called aloe latex or whole-leaf extract, are sold in some oral products and carry a different safety profile.2

On skin, aloe's gel-like polysaccharides act like a thin water-holding layer, helping the outer skin barrier hang onto moisture instead of letting it evaporate quickly.1 That explains why it can feel cooling and less tight, but one small skin-moisture finding does not establish broad treatment benefits.1

Bottom line

Topical aloe gel makes sense if you want a simple, low-commitment moisturizer and your skin tolerates it. The hydration evidence is still early, so keep expectations modest.1 Skip oral aloe for routine digestive use, especially if you take digoxin or blood-thinning medicine, because clear benefit is lacking and liver safety concerns are real.32

Frequently asked

Common questions

Does aloe vera help hydrate skin?

Early clinical evidence suggests that topical aloe vera can improve skin moisture after several weeks of use, but this finding comes from limited research. Treat it as a pleasant skin-care option, not a proven answer for every dry-skin problem.1

Can you take aloe vera for stomach or bowel discomfort?

The evidence does not establish a reliable benefit for stomach or bowel discomfort. One controlled trial in people with irritable bowel syndrome found no significant overall improvement, and oral aloe products also raise more safety questions than topical gel.32

Is oral aloe vera safe every day?

Do not treat oral aloe as a casual daily supplement. Liver injury has been reported with aloe-containing oral products, and it can also create meaningful risks alongside digoxin or blood-thinning medicines.2

What is the difference between aloe gel and aloe latex?

Aloe gel comes from the clear inner leaf material used on skin. Latex comes from the leaf's yellow outer layer and contains stimulant laxative compounds, so it is not interchangeable with topical gel.2

Sources

Sources

  1. 1. Aloe vera gel is effective in the management of burn wounds and inhibits wound healing? (2006) ↑
  2. 2. Aloe Vera (2022)
  3. 3. Aloe vera for treatment of irritable bowel syndrome: a randomized, double blind, placebo controlled trial (2005) ↑

Generated August 27, 2026

Related

More evidence for Aloe vera