Niacin (nicotinic acid)
Metabolic Health · B3 / lipid modifier
Tier B-
Bottom line
Read Off Label grades Niacin (nicotinic acid) as B- (5.8/10) based on strong evidence, moderate benefit magnitude, and a med-high-risk safety profile.
Niacin's Lp(a) niche is now being eclipsed by Lp(a)-targeted siRNA/ASO/oral agents (olpasiran, pelacarsen, lepodisiran, zerlasiran, muvalaplin) which lower Lp(a) 54-92% in trials.
Typical use: 1. — Rx (Niaspan extended release); OTC.
What this is
Niacin's Lp(a) niche is now being eclipsed by Lp(a)-targeted siRNA/ASO/oral agents (olpasiran, pelacarsen, lepodisiran, zerlasiran, muvalaplin) which lower Lp(a) 54-92% in trials. 'Flush-free' inositol hexanicotinate does not have the lipid-modifying effect of true niacin. HPS2-THRIVE 2014 largely ended routine use for CV outcomes.
Mechanism
Inhibits hepatic DGAT2 (VLDL assembly); raises HDL, lowers LDL, triglycerides, Lp(a) — the latter was one of the few tools available pre-2025; not to be confused with nicotinamide (which lacks lipid effects)
Dose & route
1.5-3 g/day PO divided with food; start low and titrate; aspirin 30 min prior reduces flushing
Citations
- https://pubmed.ncbi.nlm.nih.gov/24552284/
- https://pubmed.ncbi.nlm.nih.gov/22085343/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC4135400/
Links go to the source. If a link is dead or you want something re-checked, let me know.
Common questions
- Does Niacin (nicotinic acid) work?
- Read Off Label rates the evidence for Niacin (nicotinic acid) as Strong and the benefit magnitude as moderate, producing an overall grade of B- (5.8/10). Niacin's Lp(a) niche is now being eclipsed by Lp(a)-targeted siRNA/ASO/oral agents (olpasiran, pelacarsen, lepodisiran, zerlasiran, muvalaplin) which lower Lp(a) 54-92% in trials.
- Is Niacin (nicotinic acid) safe?
- Niacin (nicotinic acid) has a med-high risk profile in published human data. Legal status: Rx (Niaspan extended release); OTC (immediate release / 'flush-free' inositol hexanicotinate — largely inactive on lipids). This is not medical advice — see the disclaimer.
- What is the typical dose for Niacin (nicotinic acid)?
- 1.5-3 g/day PO divided with food; start low and titrate; aspirin 30 min prior reduces flushing
- How does Niacin (nicotinic acid) work?
- Inhibits hepatic DGAT2 (VLDL assembly); raises HDL, lowers LDL, triglycerides, Lp(a) — the latter was one of the few tools available pre-2025; not to be confused with nicotinamide (which lacks lipid effects)
This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.