Alanine Aminotransferase

Liver Function marker

ALT

Alanine Aminotransferase

Category: Liver Function
Unit: U/L

Enzyme primarily found in the liver. Elevated levels indicate liver cell damage.

PED Notes

Oral AAS (especially 17-alpha alkylated compounds like Dianabol, Anadrol, Winstrol) significantly elevate ALT. Intense weight training can also cause mild elevation. Values 2-3x upper limit common on orals. Values up to ~100 U/L on oral AAS are common but should not be ignored long-term.

When high

Supplements:

  • TUDCA -- 500-1000mg/day (with meals), bile flow and hepatoprotection; most evidence-supported supplement for AAS-induced cholestatic pattern
  • NAC -- 1200-1800mg/day (empty stomach, divided doses), glutathione precursor; supported by mechanistic and observational data in AAS hepatotoxicity
  • Milk Thistle (Silymarin) -- 300-600mg/day; standard form OR Silymarin Phytosome (Siliphos) 200mg 2x/day for ~10x absorption vs standard silymarin
  • Alpha-Lipoic Acid (ALA) -- 300-600mg/day

Compound/AAS adjustments (highest-leverage intervention):

  • Switch oral AAS to injectable equivalents -- injectable Winstrol, injectable Primobolan, injectable Anavar preparations substantially reduce hepatic first-pass burden vs oral versions; this is the single most effective intervention for AAS-induced ALT elevation
  • Drop 17-alpha-alkylated orals entirely (Dianabol, Anadrol, Winstrol, Anavar, Superdrol, Halotestin) if enzymes persistently >3x ULN or alongside rising bilirubin
  • Note: Proviron (mesterolone) is NOT 17-alpha-alkylated; it is hepatically well-tolerated and does not stress liver enzymes meaningfully
  • Reduce alcohol to zero during any oral AAS cycle; alcohol and oral AAS hepatotoxicity are synergistic

Pharmacological options (severe or cholestatic elevation):

  • Ursodeoxycholic acid (UDCA / Actigall) -- 10-15mg/kg/day (typically 500mg 2x/day for 80kg adult); prescription bile acid; more potent than TUDCA for confirmed AAS-induced cholestasis; case reports show resolution of bilirubin >100 umol/L with UDCA
  • Indication: ALT >5x ULN with rising bilirubin, or a confirmed cholestatic pattern on imaging/biopsy
  • All require physician oversight

Lifestyle:

  • Reduce or eliminate oral steroids if persistently elevated
  • Avoid alcohol and hepatotoxic medications
  • Allow 8-12 weeks off orals between cycles for enzyme normalisation

History Chart

Reading History

Frequently Asked Questions

Reference Ranges

Standard Range

0 - 40 U/L

VitalMetrics Range

0 - 55 U/L

Statistics