Methylene Blue 5mg
Acts as an alternative mitochondrial electron carrier, enhancing cellular respiration and providing neuroprotection.
Medically reviewed by Dr. Jonathan Snipes, MD. Last reviewed May 6, 2026.What It Is
At low doses, Methylene Blue acts as a mitochondrial enhancer and neuroprotectant. It's one of the oldest synthetic compounds in medicine with newfound cognitive applications.
How It Works
It serves as an alternative electron carrier in the mitochondrial electron transport chain, boosting ATP production. It also inhibits tau aggregation and has antioxidant properties.
Who It's For
Those seeking subtle cognitive enhancement and neuroprotection. Starting dose for methylene blue beginners.
Who Should Avoid It
AUTO-DENY: G6PD deficiency (hemolytic anemia risk), SSRIs/SNRIs (serotonin syndrome), MAOIs.
Protocol & Pricing
OBP Pharmacy Price
$1.75/cap
You pay pharmacy price. No markup.
Starting Dose
5mg/cap
Form
Capsule (5mg)
Dosing Protocol
1 capsule (5mg) daily by mouth in the morning.
Beyond Use Date
180 Days from compounding (USP <797>)
Use within this window from the date your vial is compounded. BUD is set per USP <797> sterile compounding standards and printed on every label.
Stacking Guide
Stacks Well With
Do Not Combine With
Related Peptides
Common questions about Methylene Blue 5mg
- What is the 5 mg methylene blue capsule for?
- The 5 mg methylene blue capsule is the entry-level cognitive-support dose. At 5 mg per day, methylene blue acts as a redox shuttle in the mitochondrial electron transport chain, supporting ATP production with minimal MAOI activity. This is the recommended starting strength for adults new to methylene blue who want to establish tolerance before considering higher doses.
- Who should start at 5 mg vs the higher doses?
- First-time methylene blue users should start at 5 mg to assess tolerance, allergic response, and any unexpected interactions. Patients on multiple medications, older adults, and patients with reduced hepatic clearance should typically remain at 5 mg long-term rather than escalating. Any patient with a history of serotonergic medication use must screen with a provider before starting; PeptideRx auto-denies methylene blue to patients on SSRIs, SNRIs, MAOIs, or other serotonergic drugs at any dose.
- Is 5 mg methylene blue safe for everyday use?
- Pharmaceutical-grade methylene blue at 5 mg per day has a strong safety record across more than a century of clinical use. Common transient effects include blue-green discoloration of urine and tongue, and rare mild GI upset. The 5 mg dose is well below the threshold where methylene blue's MAOI activity becomes clinically significant. Patients with G6PD deficiency must not take methylene blue at any dose.
- How do I take the 5 mg capsule?
- Take one capsule daily in the morning with water on an empty stomach (no food for 30 minutes before or after). Avoid taking with vitamin C or ascorbic acid supplements; they interfere with methylene blue's redox cycling. Track any side effects for the first two weeks; if tolerated and your provider agrees, you may step up to a higher dose strength.
- What medications cannot be combined with methylene blue?
- Do not combine methylene blue at any dose with SSRIs (sertraline, fluoxetine, escitalopram), SNRIs (venlafaxine, duloxetine), MAOIs, tricyclic antidepressants, lithium, tramadol, dextromethorphan, St. John's Wort, or any other serotonergic medication. The combination can cause serotonin syndrome, which is potentially life-threatening. PeptideRx providers screen for all of these during intake; if any apply the prescription is automatically denied.