ResearchSafe

Gynecomastia after HCG for TRT – how to reduce the risk?

Posted by brandon245 in Safety & Side Effects - 0 points, 3 comments.

I started HCG on the back of my TRT plan to keep my testicles healthy. The protocol was 500 IU twice a week, which felt right. About a month in I noticed a tender, small lump under the nipple – a classic early gynecomastia. I checked my labs and estradiol had climbed to about 60 pg/ml, a bit higher than my baseline of/z. The swelling came on a few days after injections, lasted a day or two, and then grew a bit bigger each week. I tried adding a mild NSAID the next day, and it helped with the soreness but didn’t stop the density from creeping up.

I’m wondering if there’s a safer dosing window to keep estradiol from spiking, or if using a lower dose with a more frequent schedule helps. Would love to hear how others have managed or avoided this side effect while maintaining their TRT goals.

Comments

  • aspiring_trailrun: I’ve been on TRT with HCG for a few years and hit the same spot after about six weeks. For me the main trigger seemed to be the 500 IU twice‑weekly peaks – the estradiol spike hit just after the injection and then settled down. Dropping to 250 IU three times a week kept the testicular volume up but the E2 never rose above the low‑50s, and the nipple tissue stayed flat. 25 mg every other day) only when the E2 crossed 55 pg/ml; that trimmed the occasional flare‑ups without noticeable loss of libi
  • brandon245: Thanks for the heads‑up about dropping to 250 IU three times a week. I’m thinking of trying that since my 500 IU twice a week pushed E2 to 60 pg/ml. Did you ever add a low‑dose aromatase inhibitor with that schedule, or just rely on the lower dose? Also, did your testosterone dose change after you shifted HCG? Knowing that will help me keep my TRT stable while avoiding the lump.
  • brandon245: That lines up with what I was seeing – the peaks feel like the culprit. I might trial splitting it into three 250 IU shots instead of the two 500 IU doses and keep an eye on the estradiol. If the E2 stays in the low‑50s and the lump stays flat, sounds like a win.

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