Comparison
Coenzyme Q10 vs Selank
Side-by-side of Coenzyme Q10 and Selank. Every row below is pulled from the compound schema and will update as our data grows. For deeper reads, follow through to each compound page.
Coenzyme Q10
CoQ10 supplement guide: 100 to 300 mg/day dosing, ubiquinol vs ubiquinone absorption, Q-SYMBIO heart failure data, statin myalgia evidence.
Selank
Selank peptide benefits: tuftsin analog heptapeptide, intranasal anxiolytic and nootropic. Russian clinical data, dosing, half-life, safety.
Effects at a glance
Coenzyme Q10
- •Q-SYMBIO trial showed 43% reduction in major cardiovascular events at 300 mg/day in heart failure
- •Reduces statin-induced myalgia in some patients at 100-200 mg/day per Banach 2014 meta-analysis
- •Migraine prophylaxis at 300 mg/day daily; AHS lists at Level B for prevention
- •Ubiquinol absorbs 2-3x better than ubiquinone in adults over 60
- •Plasma CoQ10 falls 15-40% with chronic statin therapy
- •Small blood pressure reduction (3-5 mmHg systolic) at 100-200 mg/day
Selank
- •Synthetic heptapeptide analog of tuftsin developed in Russia in the 1990s
- •Approved in Russia for generalized anxiety disorder and asthenic conditions
- •Russian RCTs report anxiolytic effects comparable to medazepam without sedation or dependence
- •Modulates GABAergic and serotonergic signaling and BDNF expression in preclinical models
- •Most commonly administered intranasally; subcutaneous use is anecdotal
- •No Western-validated trials; not FDA approved; research-use-only outside Russia
Side-by-side
| Attribute | Coenzyme Q10 | Selank |
|---|---|---|
| Category | supplement | peptide |
| Also known as | CoQ10, ubiquinone, ubiquinol, Q10 | TP-7, Tuftsin analog |
| Half-life (hr) ↗ | 34 | 0.5 |
| Typical dose (mg) ↗ | 200 | 0.4 |
| Dosing frequency | 1 to 3 times daily with a fat-containing meal | 2-3x daily (intranasal) |
| Routes | oral | intranasal, subcutaneous |
| Onset (hr) | 6 | 0.25 |
| Peak (hr) | 720 | 1 |
| Molecular weight | 863.36 | 751.85 |
| Molecular formula | C59H90O4 | C33H57N11O9 |
| Mechanism | Mobile electron carrier between Complex I/II and Complex III of the mitochondrial electron transport chain. Ubiquinol form acts as a lipid-soluble antioxidant in cell membranes and regenerates oxidized vitamin E. | Modulates GABAergic, serotonergic, and dopaminergic signaling. Increases BDNF expression in hippocampal neurons in preclinical models. Modulates enkephalin levels and immune cytokine signaling via tuftsin-like activity. |
| Legal status | Dietary supplement (most jurisdictions); prescription cardiac medication in Japan | Approved as a prescription anxiolytic in Russia; not FDA approved; research-use-only grey market in most other jurisdictions |
| WADA status | allowed | unknown |
| DEA / Rx | Not scheduled | Not FDA approved; not scheduled; research-chemical status outside Russia |
| Pregnancy | Limited safety data; precautionary use at standard doses | Not recommended; insufficient data |
| CAS | 303-98-0 | 129954-34-3 |
| PubChem CID | 5281915 | 11765600 |
| Wikidata | Q140453 | Q4416793 |
Safety profile
Coenzyme Q10
Common side effects
- mild GI upset (rare)
- headache (rare)
- insomnia at very high doses
Contraindications
- active warfarin therapy without monitoring (modest interaction with INR)
Interactions
- warfarin: structural similarity to vitamin K may modestly reduce warfarin efficacy; monitor INR(moderate)
- antihypertensives: additive blood pressure-lowering at high doses(minor)
- statins: statins reduce CoQ10 synthesis; CoQ10 supplementation does not affect statin efficacy(minor)
- chemotherapy (oxidative-stress-dependent agents): theoretical interference; coordinate with oncology team(moderate)
Selank
Common side effects
- mild nasal irritation (intranasal)
- transient drowsiness (uncommon)
- mild headache
Contraindications
- pregnancy
- lactation
- severe psychiatric disorder (insufficient data)
Interactions
- benzodiazepines: additive anxiolytic effect; potential for over-sedation when stacked(moderate)
- SSRIs: no documented adverse interaction; co-administration described in Russian protocols(minor)
Which Should You Take?
Coenzyme Q10 comes out ahead for most readers on the criteria we weight: 3 catalogued goals, OTC dietary supplement, oral dosing, with a Tier-A outcome catalogued. Selank is the right call when one of the conditionals below applies.
- → If your priority is cardiovascular health, pick Coenzyme Q10.
- → If your priority is healthspan extension, pick Coenzyme Q10.
- → If your priority is focus or working memory, pick Selank.
- → If your priority is anxiety reduction, pick Selank.
Edge case: If you want to avoid research-only / gray-market sourcing, Coenzyme Q10 is the more accessible choice.
Default choice: Coenzyme Q10. Lower friction to source, a Tier-A evidence outcome catalogued, and broader goal coverage. Reach for Selank only if your priority sits squarely in the goals it owns above.
This verdict is generated from each compound's schema (goals, legal status, evidence outcomes, dosing route). It updates automatically as our compound data evolves; the deeper read sits on each individual compound page.
Common questions
What is the difference between Coenzyme Q10 and Selank?
Coenzyme Q10 and Selank differ in category (supplement vs peptide), mechanism, and typical dosing. See the side-by-side table for full details.
Which has a longer half-life, Coenzyme Q10 or Selank?
Coenzyme Q10 half-life is 34 hours; Selank half-life is 0.5 hours.
Can you stack Coenzyme Q10 with Selank?
Stack compatibility depends on mechanism overlap, legal status, and individual response. Check each compound page for specific interactions and contraindications before combining.
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