1-Androsterone is a type of chemical known as a "prohormone." These chemicals are changed by the body to other "muscle-building" hormones such as testosterone. Very little is known about the safety of 1-androsterone. There is concern it might cause serious side effects similar to those caused by other "muscle-building" hormones.

1-Androsterone is included as an ingredient in a variety of supplements marketed to athletes and bodybuilders.
1-androsterone is POSSIBLY UNSAFE when taken by mouth. Early research shows that taking 1-androsterone might cause liver and kidney damage and also increase cholesterol.

Special Precautions & Warnings:

Pregnancy and breast-feeding: 1-androsterone is POSSIBLY UNSAFE when used orally during pregnancy or breast-feeding. 1-Androsterone is changed by the body to hormones which are similar to testosterone. These hormones might cause harm to pregnant women, unborn babies, or nursing infants.

High cholesterol: 1-Androsterone might worsen cholesterol. This could increase the risk for heart attacks, stroke, or death in patients with high cholesterol.

Kidney disease: 1-Androsterone might damage the kidney and worsen kidney disease in some people.

Liver problems: 1-Androsterone might damage the liver and worsen liver problems in some people.


NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.
Likely effective Effectiveness definitions
Possibly effective Effectiveness definitions
Likely ineffective Effectiveness definitions
Possibly ineffective Effectiveness definitions
Insufficient evidence Effectiveness definitions
  • Athletic performance. Early research shows that taking 1-androsterone 330 mg daily might help increase strength in people who lift weights. It might also help lower body fat.
  • Other conditions.
More evidence is needed to rate 1-androsterone for this use.

Dosing & administration

The appropriate dose of 1-androsterone depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for 1-androsterone. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.

Interactions with pharmaceuticals


Interaction Rating=Moderate Be cautious with this combination.

1-Androsterone is changed by the body to hormones that are closely related to testosterone. Taking 1-androsterone along with other medications that contain testosterone might cause serious side effects such as mood changes and heart, kidney, or liver problems.

Interactions with herbs & supplements

There are no known interactions with herbs and supplements.

Interactions with foods

There are no known interactions with foods.


After 1-androsterone is taken, the body changes it into other chemicals called hormones. Some of these hormones are very similar to testosterone. Testosterone can help build muscle, but can also cause dangerous side effects.
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