Doctor's Best R-Lipoic Acid

Doctor's Best · Capsule · 100 mg

Price/day

€0.66

Dose

100 mg

Servings/pack

Pack price

€39.50

Transparency Index

7.0/10

Recommended Pure R-isomer increases efficacy per mg, making it worthwhile despite the higher price.

Rating breakdown

Evidence for ingredient 7.0/10

The R-isomer is the active form of ALA; studies suggest higher bioactivity compared to the racemic mixture.

Value for money 6.0/10

€0.66 per 100 mg is expensive, but the higher potency of the R-form partly justifies it.

Product quality 8.0/10

BioEnhanced Na-RALA is stabilized against polymerization.

Label honesty 8.0/10

Clear labeling of the branded ingredient and 125 mg total weight.

Third-party testing 6.0/10

Internal testing only, no external certification badge.

Product Description

Doctor’s Best uses BioEnhanced Na-RALA, a buffered sodium salt of R-lipoic acid. This keeps the active form stable and improves absorption without causing significant stomach irritation.

What We Like

Pure R-isomer for maximum potency
Good tolerability thanks to the sodium salt form
Small capsules

What We’re Missing

Significantly higher cost per mg
Only 60 servings per bottle

Usage Recommendation

1 capsule on an empty stomach or between meals. For neuropathic protocols, 2–3 capsules per day.

Other Alpha-Liponsäure (R-ALA) products

Thorne Alpha-Lipoic Acid 300 mg

8.6/10

Recommended

Pure Encapsulations Alpha Lipoic Acid 200 mg

8.1/10

Recommended

NOW Foods Alpha Lipoic Acid 300

7.7/10

Recommended

Ingredient dossier

Mitochondrial antioxidant with dual water/fat solubility. R-form significantly more bioavailable than racemic mixture. Evidence strongest for diabetic neuropathy.

Read full dossier: Alpha-Liponsäure (R-ALA) →