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But some evidence suggests that the drug may be harmful for the heart, according to a review article in JACC: Journal of the American College of Cardiology

Those studies served as guideposts, or they may more appropriately be called points-of-reference, for the more recent investigations that revealed surprisingly different and diverse mechanisms of nicotinic cholinergic transmission in the brain

01 Nov, 2025 This article is medically reviewed by Dr

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This reduced diameter limits blood flow to the scalp

Additionally, some providers may question whether the increased rate is sufficient, given the complexity and persistence of substance use disorders