150 mg or 75 mg? How to Choose a Supplement Strength

The opposite logic applies to stimulant supplements than you might expect: start lower than you think you need. Stimulant tolerance is individual, and the only way to find out yours is to try it carefully. Not because a higher dose is dangerous, but because an unpleasant experience from the first pack will put you off the product for good.

How to know if you are sensitive to stimulants

A good indicator is your relationship with coffee. If you feel your heart pounding, your hands shaking, or jittery after your second espresso, you're more sensitive to caffeine than average. The same goes for if your afternoon coffee reliably disrupts your sleep or if you tend to be anxious.

On the contrary, if you don't notice three coffees a day and can't get going in the morning without them, your tolerance is higher — probably because you've built it up.

When does a softer option make sense?

• This is your first plugin of this type.
• You are sensitive to coffee.
• You have a sedentary lifestyle and don't need significant stimulation.
• You drink coffee during the day and want to stay within a reasonable total caffeine intake.

When does a stronger option make sense?

• You've used a similar supplement before and you know how you react to it.
• You train regularly and intensely.
• You've tried the gentler version and want a more concentrated formulation.
• You don't have problems with blood pressure or sleep.

You can move up at any time.

The path from the bottom up is always safer than the other way around. Try one pack of the milder variant, evaluate how it suits you, and if you want more, switch to the stronger one. Don't use both at the same time — the active ingredients are additive.

What to watch for the first week

Write down three things: how you sleep, how you feel two hours after taking it, and whether you have any digestive problems. If your sleep gets worse, move your intake to the morning. If you feel jittery, it's a sign that a stronger option isn't for you. If none of these things happen, the regimen suits you.

Detailed comparison of both ADI-PEX® variants , including differences in composition.