9 clinician-curated supplements · Pure Encapsulations & Designs for Health


In both Long COVID and ME/CFS, research increasingly points to mitochondrial dysfunction as a core driver of symptoms. Mitochondria are the organelles responsible for producing ATP — the cellular energy currency that powers every system in the body. When mitochondrial function is impaired, the result is the hallmark exhaustion, post-exertional malaise, brain fog, and widespread pain that define these conditions.
In Long COVID, SARS-CoV-2 has been shown to directly disrupt mitochondrial integrity, increase oxidative stress, and dysregulate the electron transport chain — the biochemical pathway mitochondria use to generate energy. This leaves cells starved of ATP even at rest, making normal activity feel overwhelming.
ME/CFS shares many of the same mitochondrial signatures: reduced ATP production, elevated reactive oxygen species, impaired antioxidant defenses, and deficiencies in key nutrients that mitochondria depend on — including B vitamins, CoQ10, and glutathione. These deficits compound over time, deepening fatigue and impairing recovery.
Targeted supplementation addresses these pathways directly. By replenishing depleted cofactors, reducing oxidative damage, and supporting ATP synthesis, the right supplements can help restore mitochondrial function — and with it, a meaningful improvement in energy, cognition, and resilience.
9 supplements · add individually or all at once

Basic essentials for mitochondrial function. Provides key nutrients like B vitamins, calcium, magnesium, and selenium that mitochondria require. Active forms are especially important for those with an MTHFR mutation.
Suggested use: 1–2 capsules daily with food. Usually taken in the morning.

Builds glutathione, a powerful antioxidant that protects mitochondria from oxidative damage.
Suggested use: 600–900 mg, 1–2 times daily. Typical daily range: 600–1800 mg/day.

Enhances natural killer cell function, which is often impaired in ME/CFS and Long COVID.
Suggested use: 250–500 mg daily.

A 5-carbon sugar that helps produce more ATP (cellular energy). Particularly helpful before exertion or during sensory flares.
Suggested use: 5 grams, 2–3 times daily. Typical daily range: 10–15 g/day.

Improves energy production and acts as a potent antioxidant. Best absorbed with food. Plays a key role in mitochondrial recovery.
Suggested use: 100–200 mg daily. Typical therapeutic range: 100–300 mg/day.

Boosts mitochondrial energy production by enhancing ATP synthesis through improved efficiency of the Electron Transport Chain (ETC).
Suggested use: 1–2 grams combined EPA+DHA daily. Typical range: 1–3 g/day.

An adaptogenic herb that may help improve mitochondrial function and energy production in ME/CFS or Long COVID.
Suggested use: 200–400 mg daily.

Eight essential B vitamins integral to mitochondrial energy production. B1 (thiamine), B2 (riboflavin), and B3 (niacin) directly support the mitochondria.
Suggested use: 1 capsule daily with food.

A naturally occurring compound that plays a crucial role in metabolism and energy production. Improves mitochondrial function by enhancing glucose uptake and utilization.
Suggested use: 300–600 mg daily.