Last unusual characteristic of Rip Blend, which should be mentioned is the “tren-cough”. It is a very short attack of coughing, which sometimes occurs in only a small percentage of injection, possibly even less than 1%. A minute or two, it can be rather unpleasant. The most plausible explanation – in the irritating effect of the appearance of a small oil volume in the blood, and not by direct injection into a vein, but for getting into a small blood vessel that has been damaged during needle entry. There is no evidence that it can have any long-term negative consequences.