No. Heroin's 'incredible' addictiveness has been much overplayed, backed up by the tragic spectres of long term addicts, physcially wasted by their habits. Nevertheless, like alcohol, nicotine, amphetamines and cocaine, heroin is a highly addictive drug with a seductive physical and psychological effect. It's ability to smother and cushion a user from their lives often draws the user into a psychological addiction, much before the physical compulsion starts.

The LD50 of Diphenhydramine in rats is 500mg/kg. For humans it is not known, so be careful! Lethal doses in humans are almost always far less than lethal doses in rats (allowing for body weight differences), so don't try to take the rat LD50 and apply it to yourself. Also, note that the LD50 is the dose at which 50% of the subjects will die. A lower dose will still kill a smaller proportion of the subjects - i.e. it may be that the LD10 (i.e. 10% mortality) for rats is just 100 mg/kg. See similar questions...

The LD50 (dose at which 50% of animals die) of DXM doesn't seem to be well known. For a variety of reasons, animal assays of the lethal dose of psychoactives aren't always accurate. Nor have I ever found a published LD50 for DXM. So instead, I've decided to go on the basis of the few deaths that have occurred from DXM use, keeping in mind the amount of DXM people regularly consume for recreational purposes. See similar questions...

quot; Crack cocaine" is a mix of cocaine and baking powder (sodium bicarbonate) which comes as small lumps or 'rocks'. When smoked, the cocaine vapours reach the brain much quicker than snorting, producing an intense but short-lived euphoric rush and - very quickly - a compelling desire for more. Crack is also very harsh on the lungs. Crack is highly addictive but one hit will not make you addicted. See similar questions...

Yes. The drugs manufactured now are greatly increasing the life expectancy of those living with HIV/AIDS, but there is still no cure. See similar questions...

Cocaine, the most potent stimulant of natural origin, is extracted from the leaves of the coca plant (Erythroxylon coca), which is indigenous to the Andean highlands of South America. It is a potent brain stimulant and one of the most powerfully addictive drugs. Cocaine is produced as a white chunky powder. It is sold most often in aluminum foil, plastic or paper packets, or small vials. See similar questions...

In 1990, the CIA shipped a ton of nearly pure cocaine from Venezuela to the US in an incident that was regarded as "a serious accident rather than an intentional conspiracy." It's no secret that the US military and intelligence agencies funded the Contra opposition to Nicaragua's Sandinista regime with revenues from the cocaine trade. Some of this involvement can be ascribed to bribery, corruption and incompetence. The rest of it complicity. See similar questions...

Exposure of 100 roentgens causes radiation sickness while exposure to 400 roentgens causes radiation sickness and death in half of those exposed, and 100,000 rads causes almost immediate unconsciousness and death within an hour. See similar questions...

Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one. Do not stop taking the medication without talking to your doctor. Please refer to the Metoprolol Succinate Extended-release Tablets Product Insert Sheet for additional information. See similar questions...

Since food substantially increases the bioavailability of erlotinib and may increase the risk of adverse events, patients should be instructed to take Tarceva at least one hour before or two hours after the ingestion of food. The degree that food increases the bioavailability of erlotinib may vary; therefore, Tarceva tablets should be taken on an empty stomach to help ensure that patients obtain consistent plasma levels of the drug. See similar questions...

If you miss a dose, take it as soon as remembered; do not take it if it is near the time for the next dose, instead, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up. See similar questions...

While we recommend that you talk to your physician first, Gaviscon® Acid Breakthrough Formula is perfectly safe to take with your prescription heartburn medication. See similar questions...

UV dose is the energy that is coming off the UV lamp over a specific time period. Therefore, UV dose (or fluence) is a product of UV intensity and time. Dose is usually measured in milli joules per square centimeter. Each Sterilight system is rated to disinfect your water at specific flowrate, under specific water quality conditions to give a UV dose of 30 mJ/cm2 at the end of the lamp life (which is one year). If you were to run say 10 USGPM through a 5 USGPM Sterilight system (ie. See similar questions...