Can aloe vera help with erectile dysfunction? No study has tested it in men, and there is no evidence that it helps. Aloe is sold to improve sexual performance, but the research behind that is two studies in rats that point in opposite directions. Aloe gel on the skin is usually well tolerated; aloe taken by mouth can cause cramps and diarrhoea and has been linked to rare cases of hepatitis.
What does the research on aloe and erections show?
Only animal studies, and they disagree. A PubMed search on 26 September 2026 found no study of aloe vera for erectile dysfunction or sexual function in men.
| Study | What was given | Result |
|---|---|---|
| Erhabor and Idu, 2017 | An extract of aloe root to male rats | More mounting and higher testosterone in the rats |
| Asgharzade et al., 2015 | Aloe vera gel extract by mouth to male rats | Testosterone, testis weight, sperm count and fertility all fell |
The gel is the part that lowered testosterone and sperm in the rats; the root, used in the other study, is a different part of the plant. Neither result has been tested in men. The claims that aloe improves circulation, balances hormones or eases stress enough to help erections have no study behind them: NCCIH's summary of aloe research lists skin conditions, burns and blood sugar, and nothing on erections or sexual function (NCCIH — Aloe vera).
Can you put aloe vera gel on the penis?
You can, but it will not help an erection. No study has tested aloe applied to the penis for erectile dysfunction. Topical aloe gel "is generally well tolerated; however, there have been occasional reports of burning, itching, rash, and eczema" (NCCIH). Stop if it stings or a rash appears. Other things rubbed on for erections are covered in essential oils, DMSO and Vicks VapoRub; none has trial evidence.
Is aloe vera gel a good sexual lubricant?
It has not been tested as a lubricant for sex; the trials of aloe in intimate use are of vaginal creams for dryness after menopause (Poordast et al., 2021). Two cautions apply. In a laboratory study, freeze-dried aloe at 7.5% and 10% concentrations immobilised sperm, and its authors proposed it as a vaginal contraceptive (Fahim and Wang, 1996) — a reason to avoid it if you are trying for a baby, although a gel in the body has not been tested. With condoms, healthdirect suggests a water-based lubricant and warns that oil-based ones, such as petroleum jelly or massage oil, "make the condom more likely to break" (healthdirect — Condoms), so check an aloe product's label for oils.
Is aloe vera safe to take by mouth?
Only in some forms, and only briefly. According to NCCIH:
- Short-term use of oral aloe gel, up to 42 days, appears to be safe.
- Aloe latex, from the leaf's outer layer, "can cause abdominal pain, cramps, and diarrhea".
- Aloe leaf extracts taken by mouth, for as little as three weeks, have been linked to cases of acute hepatitis.
- Whole-leaf extract that has not been treated to remove its anthraquinones is classed as a possible human carcinogen by the International Agency for Research on Cancer.
- Aloe by mouth may be unsafe in pregnancy and while breastfeeding, and overusing aloe latex can add to the side effects of digoxin, a heart medicine.
Can you take aloe vera with Viagra or Cialis?
Neither Australian leaflet names aloe, and no study has tested the combination. In a laboratory test, aloe vera juice slowed CYP3A4, the enzyme that breaks down tadalafil and helps clear sildenafil — medicines that block it raise their levels (EMA — Cialis; EMA — Viagra). The authors estimated "no major interference" with drug metabolism in people, but said the way aloe blocks the enzyme "might be of clinical significance" (Djuv and Nilsen, 2012). Both leaflets ask you to tell your doctor or pharmacist about "any medicines, vitamins or supplements that you buy without a prescription from your pharmacy, supermarket or health food shop" (Viagra CMI; Cialis CMI).
What helps erections instead?
Lifestyle change has the best natural evidence: losing weight, exercising more, stopping smoking and pelvic-floor training have each helped men with ED in trials — see natural remedies for erectile dysfunction. Among supplements, L-arginine has the most consistent trials, with a modest effect. Erection problems can be an early sign of heart disease (healthdirect), so they are worth a GP visit before any home remedy.
The short answer
Aloe vera has not been shown to help erectile dysfunction: there is no study in men, and the two rat studies disagree, with the gel lowering testosterone and sperm. On the skin it is usually harmless; by mouth it can cause diarrhoea and, rarely, liver problems. Every natural option is ranked by evidence in natural alternatives to Viagra.
