Yohimbine is a compound sourced from the bark of a plant: Pausinystalia yohimbe and is one of the hottest ingredients in fat burning supplements at the moment.
While there is still a lot of research to be done, companies across the board are including this in their products already.
This practice is mostly in the US at the moment as many countries have decided to disallow the compound from being commercially available.
There are a couple reasons for this: firstly there are some side effects which are not completely understood at the moment; and secondly it can adversely interact with some prescription medication such as anti-depressants (MAOIs and TCAs).
By increasing adrenaline, Yohimbine can exert a fat burning effect, but perhaps its most interesting mechanism is that which inhibits a process which itself suppresses fat burning.
In that sense, it makes it easier for the body to burn fat rather than act as a direct thermogenic trigger.
The study which is often referred to by supplement companies is that which involved elite soccer players. The men took Yohimbine in two separate daily doses of 10mg and showed an average body fat drop of 9.3% to 7.1%.
Clinical studies with elite athletes are very highly respected due to the subjects being in such good physical shape. To elicit significant fat loss in men like this is considered extremely difficult with supplementation alone.
REF: Ostojic SM, Institute of Sports Medicine, Sports Academy, Belgrade, Serbia and Montenegro – The effects on body composition and exercise performance in soccer players – Res Sports Med. 2006 Oct-Dec;14(4):289-99
There are studies supporting Yohimbine’s aphrodisiac and erectile dysfunction prevention properties.
The ingredient can interact with some anti-depression medications and may even exacerbate existing anxiety disorders in young people.
The research is still being conducted but if you take any medication or suffer from an anxiety disorder, it would be prudent to avoid yohimbine supplementation for the time being until more is known.
A Note on Rauwolscine
Rauwolscine is a type of isomer of Yohimbine and thus acts very similarly but with some minor differences in properties.
It is very early days yet but it appears that the two act on the same receptors within the body with Rauwolscine having even more potency in terms of fat loss.
Not enough is known with respect to dosage or even side effects at this time, though it is probably wise to go with a similar or even lower dosage than Yohimbine.
Different amounts can be taken depending on whether you are taking it as part of a stack with other supplements or if it is on its own.
It is usually taken twice a day, ranging from 2.5 to 7.5mg each time for a total of 5 to 15mg if part of a stack.
Taken as a stand-alone, it is probably best to stay in these ranges until you can assess your tolerance.
The study referenced above involved 2 x 10mg a day but bare in mind that the subjects involved were elite athletes.
Conclusion and Recommendation
There are many products in today’s supplement market which for better or worse contain yohimbine in various quantities.
A few manufacturers stick to the advised dosage parameters but the majority include the compound within a proprietary formula and so the exact dosage cannot be known.
While we believe most will be compliant with logic, common sense and the recommended dosage, there are others which might push the envelope in order to exert a more blatant feeling of the product working.
In this case, we would advise to take smaller dosages than the packaging states until you have adequately assessed your tolerance levels.
We have reviewed several products which contain Yohimbine. Please follow any of the links below to read more.
Our Product Reviews
- SST – Performix
- B4 – BPI Sports
- Ripped Juice – Betancourt Nutrition (for Rauwolscine)
- Lipo 6 Rx – Nutrex Research (for Rauwolscine)
- Hydroxycut Hardcore Elite – MuscleTech
- Super HD – Cellucor (actually the reviewed product is the international version not containing Yohimbine or Rauwolscine but the reference is worth it for your own information)
- Shredded – Rapid Cuts (another international version – see Super HD above)