Aloe Vera (Oral)
الصبّار (الألوة فيرا، فموي)
Digestive / detox · CAS: n/a (whole leaf); aloin 1415-73-2
On the skin, aloe gel is fine - but drinking it is a different story. The latex from the leaf is a harsh laxative the FDA pulled from shelves, the whole-leaf extract is flagged as a possible carcinogen, and oral aloe has been tied to liver injury. The catch is you usually can't tell from the bottle which form you're getting. For internal use, this one's a skip unless it's a certified low-aloin product and you've cleared it with a doctor.
Why this verdict
CAUTION for ORAL use. Two real signals: (1) IARC classifies non-decolorized whole-leaf aloe extract as a possible human carcinogen (Group 2B), with NTP animal evidence of intestinal tumours; (2) aloe latex (aloin) is a harsh stimulant laxative the FDA pulled from OTC laxatives in 2002 for lack of safety data, with oral aloe linked to acute hepatitis. The decisive issue: consumers usually cannot tell a safer decolorized inner-leaf product from whole-leaf/latex on the label. (Topical gel is a separate, low-risk use.)
What It Is
The succulent plant famous for soothing skin. But 'oral aloe' covers very different things: the clear inner-leaf gel, and the bitter yellow latex just under the skin that acts as a powerful laxative - and the leaf's whole extract carries safety concerns.
Aloe is a tale of two products. Smeared on a burn, the inner-leaf gel is soothing and low-risk. Swallowed, it's a different and murkier story. The bitter latex just beneath the leaf's skin contains aloin, a stimulant laxative so harsh - and so poorly studied - that the FDA ordered it out of over-the-counter laxatives back in 2002, and the non-decolorized whole-leaf extract is classified by the WHO's cancer agency as a possible human carcinogen, with animal studies showing intestinal tumours. Oral aloe has also been linked to cases of acute hepatitis. The real-world problem isn't that every oral aloe product is dangerous - properly purified, decolorized gel can be fine - it's that the label rarely tells you which version is in the bottle. Given that ambiguity, the cautious call for drinking aloe is to skip it unless it's a certified low-aloin product and a clinician has signed off.
Evidence & Status
EU Status
Restrictions on hydroxyanthracene derivatives (aloe-emodin/aloin) in food supplements due to genotoxicity concern.
US · FDA Status
Aloe latex not GRAS/E as an OTC laxative (FDA 2002); supplements sold but form varies.
Intake & Safety
Recommended intake
Not a nutrient. No established safe oral supplement dose for whole-leaf/latex forms.
Upper limit (UL)
No UL. Aloin content should be <10 ppm (IASC) for oral products; whole-leaf/latex best avoided orally.
Interactions
digoxin / cardiac glycosides (potassium loss); diuretics (potassium loss); antidiabetics (glucose lowering); oral agents (laxative reduces absorption)
Third-party testing
elevated (decolorized/<10 ppm aloin certification matters for oral)
Halal Status: Halal
Plant-derived = halal. Capsule shell / any alcohol in juice are separate halal checks.
Standard: Plant-derived = halal; verify capsule & solvent (MS 1500:2019).
Worth Knowing
Also Known As
Aloe barbadensis · aloe latex · aloe whole leaf extract · aloin · aloe-emodin · sabbar · aloe juice
Primary Source
Evidence, not medical advice. You decide.
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