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Since alcohol can intensify drug side effects, ask your doctor or pharmacist about the use of alcohol. Nursing If niacin is Mechanisms of pharmacokinetic used for treating a lipid (high. 7 Apr 2007. Attempts to cleanse illicit drugs from one's body by taking large doses of niacin can cause reactions.
Niacin (nicotinic acid), a drug used to regulate blood lipid (fat) levels, is associated with side effects that are harmful to the liver.. Question: What is the optimal dosage for the drug, niacin, available in several forms? I understand 
that it is beneficial in lowering. To reduce these side effects, your doctor may suggest you take aspirin or a non-steroidal drug (NSAID) 30 minutes before
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