11-Hydroxy Yohimbine is available as extract and is reported to have toxic effects. It contains alkaloids to ten or fifteen percent. The Hydroxy Yohimbine is considered to be pure than the Herbal Yohimbine extract. Hydroxy Yohimbine extract is regarded to be safer and consistent. This is found in trees and is used as medicine to treat erectile dysfunction. Hydroxy Yohimbine is also useful in treating obesity. The common side effect is anxiety. Hence, people prone to panic attacks are recommended to avoid using Hydroxy Yohimbine. People facing disorders due to stress also should avoid Hydroxy Yohimbine. Hydroxy Yohimbine in combination with other drugs increases the nitric oxide action. For erectile dysfunction treatment Hydroxy Yohimbine should be taken 0.1 milligram/kg daily. It is best before meals, especially when the stomach is completely empty. Hydroxy Yohimbine is also a weight loss agent as it burns fat.

Alpha-Yohimbine- This is a yohimbine-isomer that has with far more potent MAOI-inhibiting properties than normal yohimbine. This means that it works to enhance amphetamine performance , because it stops the body breaking down serotonin, noradrenaline, and dopamine. Although it has similar properties to yohimbine HCl, it is less vasoconstrictive which means it is less likely to have an adverse effect on the blood pressure, the heart rate or anxiety levels. Care should be taken when using such a supplement. If you do decide to take it you need to avoid certain foods for instance, liver, red wine and any type of cheese.