Short answer: $1.17 a day at the usual dose — $0.99 a day on the 3-bottle bundle, $0.93 on subscription
One bottle of Meraki Blu costs $35 and holds 150 mg of methylene blue. At the dose most customers report — 5 mg a day, about 20 drops — a bottle lasts 30 days, or about $1.17 a day. Three bottles cost $89, or $0.99 a day at the same dose; a subscription is $28 a bottle, or $0.93 a day. The per-day cost is low either way; the real question is whether you will feel anything worth $1 a day, and the 30-day money-back guarantee is what makes finding out cheap.
How we wrote this: we have not hands-on tested Meraki Blu. All prices below come from the maker's own product page, as checked on October 31, 2026. Prices can change, so check the current price before ordering.
Check the current price of Meraki Blu on the maker's site
The bottle math: what $35 actually buys
Short answer: 150 mg of methylene blue, about 600 drops, at about 0.25 mg and about 6 cents a drop.
Each bottle holds 30 mL at 5 mg per mL — 150 mg total. The dropper produces about 20 drops per mL, so a bottle holds about 600 drops of about 0.25 mg each. The maker's certificate of analysis, tested by Nutra Resolutions on lot #081225, confirmed 5.27 mg/mL by HPLC — slightly above the label.
| Unit | Amount | Cost |
|---|---|---|
| Per milligram | 1 mg | About $0.23 |
| Per drop | About 0.25 mg | About $0.06 |
| Per 5 mg dose | 20 drops | About $1.17 |
| Per bottle | 150 mg, about 600 drops | $35.00 |
That $0.23 per milligram is the number to remember — every other figure here is that number times a dose, a bundle, or a year.
What it costs per day, at each dose
Short answer: from $0.23 a day at a 1 mg beginner dose to $3.50 a day at the 15 mg upper range — the dose you settle on matters more than the bundle you pick.
The maker's dosage guide gives a range, not a single dose: beginners start at 1 to 3 drops, most customers settle near 20 drops (5 mg), and the upper range is 40 to 60 drops (10 to 15 mg) only under professional guidance:
| Daily dose | Drops a day | Days per bottle | Cost per day |
|---|---|---|---|
| 1 mg (beginner) | 4 | 150 | $0.23 |
| 3 mg (low dose) | 12 | 50 | $0.70 |
| 5 mg (most common) | 20 | 30 | $1.17 |
| 10 mg (higher dose) | 40 | 15 | $2.33 |
| 15 mg (upper range) | 60 | 10 | $3.50 |
Two things to notice. A beginner's bottle lasts five months, so the first bottle is cheap almost regardless of price. At the upper range a bottle lasts ten days — and the maker's guide says that range is only for people working with a healthcare professional. For the dose itself, see our guide to using Meraki Blu.
Single bottle vs bundles vs subscription
Short answer: the 3-bottle bundle saves $16, the 2-bottle bundle saves $5, and a subscription saves $7 a bottle — but buy one bottle first.
The maker's product page lists three one-time options and a subscription, with these savings as listed on October 31, 2026:
| Option | You pay | Per bottle | Per mg | You save |
|---|---|---|---|---|
| Buy 1 bottle | $35.00 | $35.00 | $0.23 | — |
| Buy 2 bottles | $65.00 | $32.50 | $0.22 | $5 (7.14%) |
| Buy 3 bottles | $89.00 | $29.67 | $0.20 | $16 (15.24%) |
| Subscribe and save | $28.00 a bottle | $28.00 | $0.19 | $7 a bottle (20%) |
At the usual 5 mg a day, that works out to $1.17 a day on single bottles, $1.08 a day on the 2-bottle bundle, $0.99 a day on the 3-bottle bundle, and $0.93 a day on subscription. The subscription, according to the maker, can be paused, skipped, or cancelled anytime, with a fresh bottle delivered monthly.
The honest advice is to ignore the bundle math on the first order. The difference between one bottle and three is $54, and you do not yet know whether you feel anything or what dose you will settle on. Buy one bottle, use the 30-day guarantee window to find out, and only then decide about the bundle or the subscription. A discount is only a saving if you would have bought the bottles anyway.
A year at 5 mg a day is 12 bottles: $420 on single bottles, $356 on 3-bottle bundles, $336 on subscription. At 1 mg a day the same year costs about $84; at 10 mg a day about $850. The dose, not the bundle, is what moves the yearly cost. The guarantee is 30 days — shorter than the 90- or 120-day guarantees some brands offer — so use the first month to find your dose and decide.
Check the current price of Meraki Blu on the maker's site
Is it worth it? The honest answer
Short answer: at about $1 a day, it is cheap for an experiment and expensive for a habit you cannot feel — so the first bottle is the only purchase that matters.
At 5 mg a day on a single bottle, Meraki Blu costs about $1.17 a day — less than a coffee, more than a multivitamin. On subscription it is $0.93 a day. That is a low price for a month-long experiment with a money-back guarantee, and a poor price for a bottle that sits in the cupboard because you felt nothing and forgot to return it in 30 days.
Whether it is worth it depends on one question no price table can answer: do you notice anything? The research is suggestive, not settled, and the effects the maker's guide describes last 4 to 6 hours. If you feel a genuine lift at 5 mg, $1 a day is reasonable. If you feel nothing after two weeks at a stable dose, no discount makes it worth continuing. For what the research actually supports, see our Meraki Blu focus and energy review.
The safety section: read this before anything else
Short answer: methylene blue is a potent MAOI with serious drug interactions, it is prohibited for US service members without a prescription, and it is not for everyone.
This section is not optional, and it comes before any decision to buy. The US Department of Defense's Operation Supplement Safety (OPSS) posted on October 8, 2026 that methylene blue is on the DoD Prohibited Dietary Supplement Ingredients List — prohibited for service members without a prescription, and the safety of non-prescription products sold online is not guaranteed. The FDA has approved methylene blue only as a prescription drug for methemoglobinemia, not as a supplement.
The most serious risk is the drug interaction. Methylene blue is a potent monoamine oxidase inhibitor (MAOI). Combined with serotonergic drugs — SSRIs, SNRIs, MAOIs, opioids, or dextromethorphan — it can trigger serotonin syndrome: agitation, rapid heart rate, high blood pressure, high temperature, and in severe cases seizures. The FDA has issued a specific warning about this interaction, and the maker's own dosage guide repeats it in full: do not take methylene blue with any serotonergic medication without direct guidance from your prescribing physician. The guide also warns against combining it with serotonergic supplements such as St. John's Wort and 5-HTP.
Other risks from the maker's own guidance: methylene blue can trigger hemolysis in people with G6PD deficiency, so get tested if you have the condition or are not sure. It is not for use in pregnancy or breastfeeding — there is not enough safety data. It can inhibit certain cytochrome P450 pathways, changing how other drugs are metabolized. It can increase skin sensitivity to UV light. And it is a powerful dye: temporary blue-green tongue and urine, and permanent staining of anything it touches.
If you take any prescription drug, have G6PD deficiency, or are pregnant or breastfeeding, talk to a clinician first — and bring the bottle to the appointment, as the maker's guide itself suggests.
This article is general information only, not medical advice.
Frequently asked questions
How long does one bottle of Meraki Blu last?
At 5 mg a day (about 20 drops), one 150 mg bottle lasts 30 days. At 1 mg a day it lasts about 150 days; at 10 mg a day, about 15 days.
Which option is cheapest per day?
At 5 mg a day: subscription $0.93 a day, 3-bottle bundle $0.99, 2-bottle bundle $1.08, single bottles $1.17. But buy one bottle first — a bundle only saves money if you would have bought the bottles anyway.
Does the subscription lock you in?
According to the maker, no — you can pause, skip, or cancel anytime, with a fresh bottle delivered monthly.
Is there a money-back guarantee?
Yes — a 30-day money-back guarantee, per the maker. Use the first month to find your dose and decide.
Verdict: buy one bottle, do the math after
Meraki Blu is inexpensive per day at the standard dose — about $1.17 on single bottles, under a dollar on subscription — and the 30-day guarantee makes the first bottle a low-risk experiment. Start at 1 to 3 drops, build to your dose over two to three weeks, and only then decide about the bundle or subscription. If you feel nothing, no discount changes the answer.
