This product is not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the Food and Drug Administration.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider before using herbs, especially if you are pregnant, nursing, taking medications, or have a medical condition.
This herb is NOT recommended during pregnancy due to potential risks to the developing fetus.
This herb is NOT recommended while breastfeeding as effects on infants are unknown.
Consult your healthcare provider before use.
3 Known Drug Interactions — Some May Be Serious
3 Moderate
This herb may interact with medications you are taking. Review the interactions table below and consult your healthcare provider before use.
What is a herb–drug interaction?
A herb–drug interaction happens when a plant or supplement changes how a medication works in your body — making it stronger, weaker, or more likely to cause harm. Herbs contain active compounds that can speed up or slow down the enzymes and transporters your body uses to process drugs.
Why it matters
•St. John's Wort can make birth control, antidepressants, and blood thinners less effective.
•Garlic can increase bleeding risk with warfarin and other blood thinners (also ginkgo, ginger, and turmeric).
•Kava can amplify sedation when taken with anxiety or sleep medications (also valerian).
The risk is highest for older adults, anyone taking several medications, and people with chronic conditions.
Always tell your doctor and pharmacist about every herb and supplement you take — and check below before combining.
Aloe vera latex combined with thiazide diuretics may cause excessive potassium loss and hypokalemia.
This list reflects a curated subset of documented interactions and is not exhaustive. The absence of a drug here is not proof that it is safe to combine. Always confirm with a pharmacist or healthcare provider.
How does aloe vera gel work to heal burns and wounds?
Aloe vera gel promotes healing through multiple mechanisms. Its primary active compound, acemannan (a polysaccharide), stimulates macrophage activity and collagen synthesis, accelerating tissue repair. The gel also contains salicylic acid and other compounds with anti-inflammatory properties that reduce swelling and pain. Additionally, aloe creates a protective moisture barrier over wounds, preventing bacterial contamination while maintaining optimal hydration for cellular regeneration. Evidence level B supports its effectiveness for first and second-degree burns, with traditional use spanning over 6,000 years.
Can aloe vera interact with prescription medications?
Yes, aloe vera can interact with several medications, particularly when taken internally. The laxative effects of aloe latex may decrease absorption of oral medications by accelerating intestinal transit. Aloe may potentiate the effects of diuretics, increasing the risk of potassium depletion and electrolyte imbalance. It should not be combined with digoxin or other heart medications, as electrolyte disturbances can affect cardiac function. Aloe may also enhance the effects of blood sugar-lowering medications. Always consult a healthcare provider before combining aloe vera with prescription medications.
What is the recommended dosage of aloe vera for constipation?
For constipation relief, the typical adult dosage of aloe latex is 100-200mg taken once daily, usually at bedtime. Aloe vera juice can be consumed at approximately 50ml daily for digestive support. However, aloe latex should not be used for more than 7-10 consecutive days, as chronic use can lead to electrolyte imbalances, potassium depletion, and laxative dependence. Long-term use of stimulant laxatives like aloe latex may also cause melanosis coli, a benign darkening of the colon lining. Evidence level B supports short-term use only.
Is aloe vera safe to use during pregnancy?
Aloe vera is considered unsafe during pregnancy when taken internally. The anthraquinone compounds in aloe latex can stimulate uterine contractions and increase the risk of miscarriage or premature labor. These compounds also pass into breast milk and may cause diarrhea in nursing infants. Pregnant and breastfeeding women should avoid all internal aloe products, including aloe juice and latex supplements. Topical application of aloe gel to the skin is generally considered safe during pregnancy, as minimal systemic absorption occurs. Always consult a healthcare provider before use.
Is aloe vera effective for treating sunburn?
Yes, aloe vera is effective for treating sunburn and minor burns, supported by evidence level B. Studies demonstrate that aloe gel reduces healing time, decreases inflammation, and provides cooling relief for burned skin. The gel's high water content hydrates damaged tissue while its anti-inflammatory compounds reduce redness and pain. For best results, apply pure aloe gel directly to affected areas as needed. Commercial products should contain at least 20-30% aloe concentration for therapeutic benefit. While effective for minor burns, severe burns require medical attention.
What are the side effects of taking aloe vera internally?
Internal use of aloe vera, particularly aloe latex, can cause several side effects. Common effects include diarrhea, abdominal cramps, and gastrointestinal discomfort. Chronic use may lead to electrolyte imbalances, particularly potassium depletion, which can cause muscle weakness and cardiac issues in severe cases. Some individuals experience kidney irritation or worsening of existing kidney disease. Aloe latex is contraindicated in people with intestinal obstruction, inflammatory bowel disease, kidney disease, or heart conditions. Skin irritation and allergic contact dermatitis may occur with topical use in sensitive individuals.
PubMed-compiled information sheet
This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.
Compiled from 28 PubMed articles · model: gemma4:31b
Summary
Aloe vera (Aloe barbadensis miller) is a succulent plant recognized for its diverse health-promoting, skin care, and medicinal properties [PMID:37915246].
Background
Aloe vera is a perennial succulent medicinal plant belonging to the Liliaceae family [PMID:31470079, PMID:35092563]. It is a cactus-like plant whose extracts are used topically for skin care and orally as a component of herbal mixtures [PMID:31643946].
Traditional uses
Traditionally used to treat skin injuries such as burns, cuts, insect bites, and eczemas, as well as digestive problems [PMID:32183224]. It has also been used in the traditional medicine of Mexico for anti-inflammatory and cosmetic purposes [PMID:27507917].
Active compounds
The plant contains over 200 bioactive compounds [PMID:37915246]. Key constituents include polysaccharides (e.g., acemannan, glucomannan), phenolic acids, flavonoids, saponins, alkaloids, terpenoids, and anthraquinone derivatives such as aloin, aloe-emodin, aloesin, and emodin [PMID:32183224, PMID:37915246, PMID:31643946]. Other components include allantoin, salicylic acid, and enzymes such as cyclooxygenase, amylase, lipase, alkaline phosphatase, and carboxypeptidase [PMID:31643946].
Mechanism of action
Aloe vera exhibits anti-inflammatory, antimicrobial, antioxidant, and immunomodulatory effects [PMID:32183224, PMID:37915246, PMID:28216559]. Acemannan, a primary polysaccharide, is associated with immunoregulation, anti-cancer, and neuroprotection activities [PMID:31010204].
Clinical evidence
Evidence AOral Submucous Fibrosis (OSF)
Statistically significant reduction in pain and burning sensation at the end of the first and second month, though no significant difference in objective clinical outcomes [PMID:30329174]
Evidence APlaque and Gingivitis
Effective in reducing plaque and gingival inflammation, with some studies finding it as effective as chlorhexidine [PMID:30829440]
Evidence BSkin Hydration
Formulations with 0.25% and 0.50% freeze-dried Aloe vera extract showed effects on skin hydration after application [PMID:17026654]
Evidence CRadiation-induced skin reactions
Moderate efficacy was seen in some cases, though it may not be effective for prophylaxis or treatment in breast cancer patients [PMID:31003648]
Evidence CBlood Glucose
Efficacy in reducing blood glucose levels [PMID:37915246]
Safety & adverse effects
Ingestion is associated with diarrhea, hypokalemia, pseudomelanosis coli, kidney failure, and electrolyte imbalance [PMID:26986231, PMID:16690538]. Topical application may cause contact dermatitis, erythema, and phototoxicity [PMID:16690538, PMID:26986231]. Aloe vera whole leaf extract has been classified by the IARC as a possible human carcinogen (Group 2B) due to evidence in rats [PMID:26986231]. Oral forms have been linked to rare instances of clinically apparent liver injury [PMID:31643946].
Pregnancy & lactation
Aloe latex should not be used during breastfeeding [PMID:31643946].
Drug interactions
Ingestion of Aloe vera is associated with conventional drug interactions [PMID:16690538].
Evidence summary
Evidence ranges from high-level systematic reviews and meta-analyses for dental applications (A) to lower-level narrative reviews (C) and individual clinical trials (B) for skin and metabolic effects.
PubMed sources
1.PMID: 32183224 (2020) — Pharmacological Update Properties of Aloe Vera and its Major Active Constituents. · Molecules (Basel, Switzerland)
2.PMID: 37915246 (2024) — Aloe Barbadensis Miller (Aloe Vera). · International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition
3.PMID: 33066720 (2021) — Aloe vera: A Medicinal Plant Used in Skin Wound Healing. · Tissue engineering. Part B, Reviews
4.PMID: 26986231 (2016) — Aloe vera: A review of toxicity and adverse clinical effects. · Journal of environmental science and health. Part C, Environmental carcinogenesis & ecotoxicology reviews
5.PMID: 19882025 (2008) — Aloe vera: a short review. · Indian journal of dermatology
7.PMID: 31010204 (2019) — Extraction, Purification, Structural Characteristics, Biological Activities and Pharmacological Applications of Acemannan, a Polysaccharide from Aloe vera: A Review. · Molecules (Basel, Switzerland)
8.PMID: 17026654 (2006) — Moisturizing effect of cosmetic formulations containing Aloe vera extract in different concentrations assessed by skin bioengineering techniques. · Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI)
9.PMID: 29999415 (2019) — Biomedical applications of Aloe vera. · Critical reviews in food science and nutrition
11.PMID: 35092563 (2022) — The dark side of miracle plant-Aloe vera: a review. · Molecular biology reports
12.PMID: 28216559 (2017) — Aloe Vera for Tissue Engineering Applications. · Journal of functional biomaterials
13.PMID: 27507917 (2010) — Aloe-Vera: A Nature's Gift to Children. · International journal of clinical pediatric dentistry
14.PMID: 31470079 (2019) — Lead bioactive compounds of Aloe vera as potential anticancer agent. · Pharmacological research
15.PMID: 36702364 (2023) — The absence of genotoxicity of Aloe vera beverages: A review of the literature. · Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association
16.PMID: 31269881 (2019) — Treatment of Skin Disorders with Aloe Materials. · Current pharmaceutical design
17.PMID: 26015726 (2015) — Benefits of Aloe vera in dentistry. · Journal of pharmacy & bioallied sciences
18.PMID: 35631425 (2022) — Utilization of Aloe Compounds in Combatting Viral Diseases. · Pharmaceuticals (Basel, Switzerland)
19.PMID: 16690538 (2006) — An evaluation of the biological and toxicological properties of Aloe barbadensis (miller), Aloe vera. · Journal of environmental science and health. Part C, Environmental carcinogenesis & ecotoxicology reviews
20.PMID: 28328276 (2017) — The potential benefits of using aloe vera in stoma patient skin care. · British journal of nursing (Mark Allen Publishing)
21.PMID: 31003648 (2019) — The use of aloe vera in cancer radiation: An updated comprehensive review. · Complementary therapies in clinical practice
22.PMID: 31456283 (2019) — Aloe vera as an herbal medicine in the treatment of metabolic syndrome: A review. · Phytotherapy research : PTR
23.PMID: 36297440 (2022) — Effects of Carbon Nanomaterials and Aloe vera on Melanomas-Where Are We? Recent Updates. · Pharmaceutics
24.PMID: 37504418 (2023) — Aloe vera-Based Hydrogels for Wound Healing: Properties and Therapeutic Effects. · Gels (Basel, Switzerland)
25.PMID: 9776900 (1998) — Aloe vera: magic or medicine? · Nursing standard (Royal College of Nursing (Great Britain) : 1987)
26.PMID: 31209704 (2019) — Aloe vera (L.) Webb.: Natural Sources of Antioxidants - A Review. · Plant foods for human nutrition (Dordrecht, Netherlands)
27.PMID: 30329174 (2019) — Aloe vera in treatment of oral submucous fibrosis: A systematic review and meta-analysis. · Journal of oral pathology & medicine : official publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology
28.PMID: 30829440 (2020) — Efficacy of aloe vera mouthwash versus chlorhexidine on plaque and gingivitis: A systematic review. · International journal of dental hygiene