Best Supplements for ED and Low Testosterone After 40, Compared Dose by Dose
Short answer: the ingredients with real human evidence for this category are L-arginine or L-citrulline at gram level doses for blood flow, and tongkat ali for testosterone in men who start out low. Almost every blend on the market, including the three compared here, uses far less than that per ingredient. The single most useful thing you can check before buying is whether the label tells you the dose at all. We cover all three men's supplements reviewed on this site below, by what they disclose, where they ship, and who each one actually fits.
What the research actually supports
This site has gone ingredient by ingredient in two separate guides, so this is the short version, not a repeat:
- L-arginine and L-citrulline (nitric oxide, blood flow): real effect at 1,500 to 5,000 mg a day. Most blends use 50 to 100 mg. Full breakdown in the nitric oxide guide.
- Tongkat ali (testosterone): raises testosterone in clinical trials, strongest in men who were deficient, at 200 to 400 mg a day.
- Maca (desire): modest, real effect on self reported desire at 1,500 to 3,000 mg a day, no effect on testosterone itself.
- Panax ginseng and horny goat weed: weakest human evidence of the group. Full herb by herb breakdown, doses and verdicts in the ingredient research guide.
- Beetroot: proven for blood flow generally, never tested directly for erections, and the amount in a typical gummy is far below what the blood flow studies used.
The three options, compared
| IronPulseX | VigorX Pro | Peak State Capsules | |
|---|---|---|---|
| Format | Gummy | Capsule | Capsule |
| Doses on label | Yes, all 7 ingredients | No, blend only | No, proprietary blend |
| Ships to | US, UK, NZ, CA, AU | US only | NZ, AU, CA |
| Guarantee | 60 days, money back | 60 days, money back | 60 days, money back |
| Purchase model | One time purchase | One time purchase | Subscription option (can be unchecked) |
| Best fit for | Readers who want to check every dose themselves | US readers who prefer a capsule to a gummy | AU, NZ and CA readers who prefer a capsule |
Guarantee terms and prices change; always confirm the current terms on the product's own checkout page before buying. Full ingredient lists and research citations are in each review linked below.
Which one should you pick?
Start with where you live, since that rules most of the decision out immediately:
- US or UK: only IronPulseX ships there among these three, and it is also the one that prints every dose, so it doubles as the easiest one to evaluate against the research above. US readers who want a capsule instead of a gummy can also see VigorX Pro, which does not disclose individual doses.
- Australia, New Zealand or Canada: all three ship there. If seeing the exact dose of every ingredient matters to you, IronPulseX is the only one of the three that does it. If you would rather take a capsule, Peak State is the capsule option built for these markets specifically, with a 60 day guarantee to test it yourself.
Our pick for most readers: IronPulseX is the one product here where you do not have to take our word, or the seller's word, for what is inside. Every one of its 7 ingredients lists a milligram amount, so you can check it against the research above yourself. It ships to the widest range of countries of the three and carries the same 60 day money back guarantee.
What to watch for when shopping this category
A few patterns show up across this entire category, not just these three products:
- A proprietary blend with no individual doses. This is the single most common way a label avoids telling you anything useful. A total blend weight tells you nothing about whether any one ingredient is near a researched amount.
- No manufacturing or facility information. A GMP certified, named facility is a basic, checkable claim. Its absence is not proof of a problem, but its presence is a small, real signal.
- No guarantee, or a guarantee that is hard to use. A real money back guarantee with a reasonable window is what makes testing a supplement on yourself low risk. Read the actual terms, not just the headline number of days.
- A subscription box checked by default. Common across this category. Check the order page carefully if you only want a one time purchase.
If low desire rather than firmness is the main issue, start with low sex drive after 40, which covers testosterone, sleep and the other reversible causes before any supplement.
Common questions
What supplements actually help with ED?
The ingredients with the most human evidence are L-arginine or L-citrulline at gram level doses for blood flow, and tongkat ali for testosterone in men who are low to begin with. Maca has modest evidence for desire. Most blends underdose these ingredients badly, so the product that prints its exact doses lets you check this yourself instead of guessing.
Which is the best testosterone booster for men over 40?
Of the three compared here, IronPulseX and Peak State both include tongkat ali, the ingredient with the clearest human evidence for raising testosterone in deficient men. IronPulseX prints the exact milligrams on the label; Peak State uses a proprietary blend that does not break out individual doses.
Should I pick a product with doses on the label?
It is the single most useful thing to check before buying in this category, since it is the only way to compare what you are taking against the actual research. Of the three products here, only IronPulseX lists a milligram amount for every ingredient; VigorX Pro and Peak State Capsules use blends that do not disclose individual doses.
Which of these ships to my country?
IronPulseX ships to the US, UK, New Zealand, Canada and Australia. VigorX Pro currently ships to the US only. Peak State Capsules ships to New Zealand, Australia and Canada, not the US or UK.
Are any of these a substitute for seeing a doctor?
No. All three are general wellness supplements, not treatments for a diagnosed medical condition. A sudden change in erections or desire, or any change alongside chest pain or shortness of breath, is a reason to see a doctor first.
Medical note. This article is general information, not medical advice. These are dietary supplements, not treatments for a diagnosed condition. Talk to a doctor before starting one, especially if you take other medication.
Affiliate disclosure. If you buy through links on this site to IronPulseX, VigorX Pro or Peak State, we may earn a commission from the seller. You pay the same price, and it does not change what we write.