The use of 'convenience store crack pipes' â glass tubes which originally contained small artificial roses â may contribute to this condition. Having a very hot pipe pressed against the lips often causes cracked and blistered lips, colloquially known as 'crack lip'. Therefore, crack pipes are generally very short, to minimize the time between evaporating and ingestion (thereby minimizing loss of potency). Crack has a melting point of around 90 Â☌ (194 Â☏), and the smoke does not remain potent for long. Crack users tend to smoke the drug because that has a higher bioavailability than other routes typically used for drugs of abuse such as insufflation. Smoking problems: Any route of administration poses its own set of health risks in the case of crack cocaine, smoking tends to be more harmful than other routes.Adulturants used with crack and cocaine include milk powder, sugars such as glucose, starch, caffeine, lidocaine, benzocaine, paracetamol, amphetamine, scopolamine and strychnine. Occasionally, highly toxic substances are used, with a range of corresponding short and long-term health risks. Toxic adulterants: Many substances may have been added in order to expand the weight and volume of a batch, while still appearing to be pure crack.Many of these issues relate specifically to the release of methylecgonidine and its effect on the heart, lungs, and liver. Some research suggests that smoking crack or freebase cocaine has additional health risks compared to other methods of taking cocaine. Like other forms of cocaine, smoking crack can increase heart rate and blood pressure, leading to long-term cardiovascular problems.

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