It's 1am. You're four threads deep. And the same argument is going round in circles: "just take fin, nothing else works, everything else is cope" versus "I'm not risking my libido for hair, look what happened to me".
Both camps are shouting. Neither is citing much. Let's replace the noise with what the research actually found.
Same target, different strength
Start here, because it's the thing most arguments miss: these two work on the same mechanism. Both inhibit 5-alpha reductase, the enzyme that converts testosterone into DHT, the hormone that miniaturises genetically sensitive follicles.
They're not different philosophies. They're different intensities of the same intervention.
-
Finasteride: a pharmaceutical inhibitor reducing serum DHT by around 70%. Prescription-only, licensed for men in the UK.
-
Saw palmetto: a plant extract shown in research to help reduce DHT levels by up to 30%. Available without prescription.
Roughly speaking, one is a partial brake and the other is a much firmer one. Everything else follows from that.
Head to head: the comparative research
A two-year comparative study of men with mild-to-moderate androgenetic alopecia found improvement in around 38% of men taking saw palmetto, versus around 68% taking finasteride.
Two honest readings, and you need both:
Finasteride is clearly the stronger drug. Nearly twice the response rate. If maximum efficacy is your only criterion, this is not a close contest and I won't pretend it is.
Saw palmetto produced improvement in roughly four in ten men. From a plant extract, without a prescription, with a considerably cleaner tolerability profile. In a category full of things that do nothing at all, four in ten is a real result.
Worth noting the study population: mild-to-moderate loss. Nobody is claiming saw palmetto rescues a Norwood 5. The evidence sits where the evidence sits.
The side effect ledger
Finasteride. In the original trials, sexual side effects were reported by around 3.8% of men versus 2.1% on placebo: a drug-attributable gap of roughly 1 to 2 in 100. The MHRA requires warnings about rare persistent sexual dysfunction after stopping, and about mood changes including depression and suicidal thoughts. Most men tolerate it well. A minority don't. And the uncomfortable truth is you can't know which group you're in until you try.
Saw palmetto. Generally well tolerated across studies, with occasional mild digestive upset the most commonly reported issue. The mechanistic reason is straightforward: a partial inhibitor lowering DHT by up to 30% doesn't produce the near-total systemic suppression that drives finasteride's side effect profile. Gentler brake, gentler consequences, in both directions.
Why not both?
Reasonable question, and the honest answer is that there's no good data on stacking them, and mechanistically you'd be inhibiting the same enzyme twice with diminishing returns. If you're on finasteride and it's working, saw palmetto isn't adding much. If you're on finasteride and considering adding anything, talk to your prescriber.
The stack that does make sense is saw palmetto plus pumpkin seed oil, which is a different point covered below.
So which should you choose?
It's genuinely a values question, not a trick question with a correct answer.
Choose finasteride if efficacy is your priority, your loss is progressing quickly, you're at a Norwood stage where a 30% DHT reduction realistically won't hold the line, and you're comfortable with the risk numbers now that you've seen them properly. See a GP or licensed prescriber. We'd rather be straight with you than pretend the strongest option doesn't exist, because you'd find out eventually and then nothing else we told you would count.
Choose saw palmetto, paired with pumpkin seed oil, if you've weighed the sides and decided against a daily pharmaceutical, if your thinning is early to moderate, or if you tried finasteride and it genuinely wasn't for you. Pairing the two attacks the same pathway from two angles: pumpkin seed oil at 400mg daily was linked to a 40% increase in mean hair count over 24 weeks in a 2014 randomised placebo-controlled trial. That combination, at research-matched doses, is what's in our Hair Growth Softgels: 300mg saw palmetto, 400mg pumpkin seed oil, nothing else.
The point the 1am argument always misses
The treatment that works is the one you'll still be taking in month eighteen.
A stronger option abandoned after six weeks loses to a gentler option taken consistently for two years. That isn't a motivational slogan, it's how hair cycles work: nothing in this category produces visible results before month three to four, and everything in this category reverses if you stop.
So the real question isn't "which is stronger". It's "which will I genuinely still be doing when this stops feeling urgent". Answer that honestly, pick accordingly, and then stop reading threads at 1am. You've got the numbers now. The rest is just anxiety with a search bar.