Peptide Comparison
NAD+vsSS-31 (Elamipretide)
Your cells' master energy currency and anti-aging powerhouse—NAD+ keeps your mitochondria humming, activates longevity genes called sirtuins, and helps repair DNA damage that accumulates as you get older.
A revolutionary mitochondria-targeting peptide that works like a direct energy boost for your cells—binding to cardiolipin in your mitochondria to supercharge ATP production, reduce oxidative stress, and protect your cellular powerhouses from age-related decline.
At a Glance
Quick
comparison
Dose Range
NAD+
250–500 mg
SS-31 (Elamipretide)
5–40 mg
Frequency
NAD+
Once daily
SS-31 (Elamipretide)
Once daily
Administration
NAD+
Oral (NR or NMN precursors)
SS-31 (Elamipretide)
Subcutaneous injection
Cycle Length
NAD+
Ongoing/indefinite
SS-31 (Elamipretide)
4-6 weeks
Onset Speed
NAD+
Moderate (1-2 weeks)
SS-31 (Elamipretide)
Moderate (1-2 weeks)
Evidence Level
NAD+
Moderate human trials (Phase 1-2)
SS-31 (Elamipretide)
Moderate human trials (Phase 1-2)
Efficacy
Benefit
ratings
Cellular Energy
Longevity Support
Brain Function
Mitochondrial Protection
Anti-Oxidant (Targeted)
Technical Data
Compound
specifications
NAD+
Molecular Formula
C21H27N7O14P2
Molecular Weight
663.4 g/mol
Half-Life
1-2 hours (plasma); tissue levels persist longer
Bioavailability
Variable by route: ~30% oral (precursors), ~100% IV
CAS Number
53-84-9
SS-31 (Elamipretide)
Molecular Formula
C32H49N9O5
Molecular Weight
639.8 g/mol
Half-Life
3-4 hours
Bioavailability
~92% (subcutaneous)
CAS Number
736992-21-5
Protocols
Dosing
tiers
NAD+
SS-31 (Elamipretide)
Applications
Best
suited for
NAD+
Healthy Aging Enthusiasts
NAD+ levels naturally decline 50% or more by middle age, and this drop is linked to many signs of aging. Boosting NAD+ helps maintain the cellular repair and energy production that keeps you feeling vital. It's like refilling your cells' gas tanks.
Brain Health Seekers
Your brain is an energy hog—it uses about 20% of your body's energy despite being only 2% of your weight. NAD+ supports the mitochondria that power your neurons, and research shows promising effects on cognitive function and neuroprotection.
Athletes and Active People
Every time you exercise, your muscles burn through NAD+ to produce energy. Boosting your NAD+ levels may help with recovery, endurance, and maintaining muscle function as you age. Many athletes notice improved workout recovery.
Metabolic Support Seekers
NAD+ plays a central role in how your body processes fats and sugars. Research shows it may help support healthy blood sugar levels, improve insulin sensitivity, and support weight management efforts when combined with a healthy lifestyle.
SS-31 (Elamipretide)
Mitochondrial Health Enthusiasts
If you're focused on optimizing cellular energy at the most fundamental level, SS-31 targets the actual machinery inside your mitochondria. It binds to cardiolipin—the special fat molecule that holds your electron transport chain together—keeping your cellular powerhouses running smoothly.
Aging Adults Concerned About Cellular Decline
Mitochondrial dysfunction is now recognized as a hallmark of aging. Your cells' energy factories get less efficient over time, producing more harmful byproducts. SS-31 helps protect and restore mitochondrial function, addressing one of the root causes of age-related decline.
Heart Health Supporters
Your heart is one of the most energy-demanding organs, packed with mitochondria. Clinical trials have studied SS-31 in heart failure patients because cardiac cells are especially vulnerable to mitochondrial dysfunction. Supporting heart mitochondria supports overall cardiovascular function.
Those Recovering from Oxidative Stress
Whether from intense exercise, illness, or environmental factors, oxidative stress damages your mitochondria from the inside out. SS-31 works as an antioxidant exactly where reactive oxygen species are produced—right at the inner mitochondrial membrane—neutralizing them before they cause harm.
Safety Profile
Side
effects
NAD+
Common
- Flushing and warmth
- Digestive upset
- Mild headache
Uncommon
- Increased energy or restlessness
- Vivid dreams
Serious
- Chest tightness during IV infusion
SS-31 (Elamipretide)
Common
- Injection site reactions
- Headache
- Fatigue
- Nausea
Uncommon
- Dizziness
- Flushing
Serious
- Allergic reaction
Research Status
Safety
& evidence
NAD+
Evidence Level
Moderate human trials (Phase 1-2)
FDA Status
Not FDA approved
Safety Overview
NAD+ precursors like NR and NMN have demonstrated excellent safety profiles in human trials, with doses up to 2000-3000 mg daily being well-tolerated. The most common side effects are mild flushing (similar to niacin) and temporary digestive upset. IV NAD+ is more intense but also appears safe when administered properly by healthcare professionals.
Contraindications
- xActive cancer (theoretical concern about fueling cancer cell metabolism)
- xPregnancy or breastfeeding
- xKnown allergy to niacin or B vitamins
- xSevere liver disease
SS-31 (Elamipretide)
Evidence Level
Moderate human trials (Phase 1-2)
FDA Status
FDA approved for other use
Safety Overview
SS-31 (elamipretide) has demonstrated a favorable safety profile across multiple clinical trials, including studies lasting up to 24 weeks. The most common adverse events are mild injection site reactions. In September 2025, elamipretide received FDA approval for Barth syndrome, validating its safety in that population. Most side effects are mild to moderate and typically resolve with continued use or dose adjustment.
Contraindications
- xPregnancy or planning pregnancy
- xCurrently breastfeeding
- xSevere kidney disease (peptide is renally excreted)
- xKnown hypersensitivity to elamipretide or its components
- xChildren and adolescents under 18
Decision Guide
Which is
right for you?
Choose NAD+ if...
- Cellular energy and vitality
- Healthy aging and longevity
- Brain health and cognitive support
- Metabolic optimization
Choose SS-31 (Elamipretide) if...
- Mitochondrial health optimization
- Cellular energy enhancement
- Healthy aging support
- Heart health maintenance