Optimize SEO for Your Dietary Supplement Product Pages

As an SEO expert specialized in e-commerce of dietary supplements, write optimized content for the following product page. Respect regulatory constraints (authorized health claims, legal notices) and use technical vocabulary specific to the sector (bioavailability, active ingredient synergies, GMP standards).

URGENCY: The text must comply with EU Regulation 1924/2006. No therapeutic claims allowed. Instead, use objective benefits (e.g., 'contributes to normal energy metabolism' not 'cures fatigue').

VARIABLES:

• [PRODUCT_NAME]: {name of the supplement, e.g., Liposomal Vitamin C 1000mg}
• [KEY_INGREDIENTS]: {e.g., ascorbic acid, phospholipids}
• [TARGET_AUDIENCE]: {e.g., athletes, seniors, health-conscious individuals}
• [UNIQUE_SELLING_POINTS]: {e.g., made in France, organic certification, independent lab testing}
• [MAIN_KEYWORDS]: {e.g., liposomal vitamin C, better absorption}

PAGE STRUCTURE:

1. H1 Title: Contains [PRODUCT_NAME] and a main keyword. Maximum 60 characters.
2. Meta description: 150-160 characters, including [UNIQUE_SELLING_POINTS] and a call to action.
3. Long description: minimum 300 words, structured in 3 paragraphs:
   • Key benefits: synergies between [KEY_INGREDIENTS] for [TARGET_AUDIENCE], with data (e.g., absorption rate X% higher).
   • Quality and safety: mentions certifications, GMP standards, third-party tests.
   • Recommended use: dosage, timing, expert advice.
4. FAQ: 3 questions/answers optimized for snippet, based on [MAIN_KEYWORDS].
5. Review section: natural integration of calls to leave a review, without violating Google guidelines.

Output format: JSON with keys: title, meta_description, description_longue, faq, zone_avis.

Tone: professional, factual, reassuring. Avoid excessive marketing. Highlight clinical studies if available.