Benzocaine |
Local anaesthetic used in creams, ointments and suntan lotions. Also reportedly used as a fish anaesthetic. |
Similar anaesthetic properties to cocaine. |
2 |
271 |
Boric acid |
Used as an insecticide and as an antiseptic in medicinal and cosmetic products. Also used for weatherproofing and fireproofing fabric and timber. |
May enhance anaesthetic effects of cocaine but believed to be added because it looks like cocaine crystals. |
0 |
33 |
Caffeine |
Mild stimulant used extensively in medicines and the food and drink industry. |
Being a stimulant, it has some of the properties of amphetamine and cocaine. |
53 |
48 |
Creatine (usually as monohydrate) |
Naturally occurring compound found in the body. Used as a supplement by bodybuilders and freely available in health shops and gyms. |
May simply be seen as easily accessible, with the right appearance. |
0 |
46 |
Diltiazem (probably as hydrochloride salt) |
Used in treatment of various heart conditions, including angina and high blood pressure. |
Reason for addition not fully understood, but amounts generally believed to be small. |
28 |
52 |
Dimethylterephthalate |
Chemical used to make plastic films and sheets. |
Present at low levels and previously thought by some to have 'leeched' out of packaging materials. Now thought to added deliberately but for what reason is not known. |
11 |
2 |
Hydroxyzine (probably in dihydrochloride salt form) |
Antihistamine that has also been used as a tranquiliser in veterinary medicine. |
Reason for addition not fully understood. |
42 |
9 |
Lignocaine, also known as lidocaine (probably as hydrochloride salt) |
Local anaesthetic used mostly for surgery. Also used under medical supervision for the treatment of some heart disorders. |
Looks like cocaine and has similar anaesthetic properties. Recently seen in some heroin samples, possibly because the same people are also supplying cocaine. |
18 |
78 |
Mannitol (mannose) |
Naturally occurring compound. Used in medicine as a diuretic and aid for testing kidneys. Used in the food industry as a free-flow agent, flavour enhancer and sweetener. |
Originally associated with cocaine because its anti-caking properties helped to keep the drug as a powder. Now more likely to be seen in heroin, although the reason why is not clear. |
3 |
13 |
Paracetamol |
Painkiller, widely used. |
Found occasionally in cocaine, but principally in heroin samples. |
3 |
8 |
Phenacetin |
Painkiller chemically related to paracetamol. No longer used in the UK because of its suspected cancer-causing properties. |
Looks like cocaine. Recently seen in some heroin samples, possibly because the same people are also supplying cocaine. |
58 |
105 |
Procaine (probably as hydrochloride salt) |
Local anesthetic used in creams, ointments and suntan lotions. |
Similar anaesthetic properties to cocaine. Less common now than it was a few years ago. |
22 |
14 |
Sugars (lactose, glucose, dextrose) and related substances (sorbitol, inositol) |
Widely used in medicines and the food and drink industry. Lactose in particular is used as a filler for many tablets. |
Readily available. |
Lactose – 9 Glucose – 3 |
Lactose – 27 Glucose – 11 Inositol – 3 Sorbitol – 1 |
Tetramisole hydrochloride |
Used to treat worms and parasitic infestations in animals. Has had trials for the treatment of certain cancers. |
Reason for addition not fully understood. Seems to be present in relatively small quantities. |
94 |
133 |
Other adulterants |
N/A |
N/A |
Sodium bicarbonate – 15 Sodium chloride – 10 Benzoic Acid – 1 |
Potassium hydrogen tartrate – 6 Sodium chloride – 5 |
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