Frequently Asked Questions
Everything you need to know about Dr. Zarif's supplements, the Rhythm Eating Lifestyle, shipping, and more. Can't find your answer? We're always here.
Contact Us Directly →Every formulation in our catalogue was developed directly by Dr. Farid Zarif — a Doctor of Human Nutrition Science with over 37 years of clinical practice. We use whole-plant botanicals — not isolated extracts — because Dr. Zarif believes the full synergistic compound profile of a plant is what creates therapeutic effect. No artificial fillers, no synthetic binders, no unnecessary additives.
Herbal supplements are regulated by the FDA as foods, not drugs — which means they are not subject to the same pre-market approval process as prescription medications. This is standard across the entire supplement industry. Our formulations are developed by a licensed physician based on clinical evidence.
Most customers begin noticing meaningful changes between 3 and 8 weeks of consistent use. Results are significantly amplified when paired with the Rhythm Eating Lifestyle protocol.
Many customers take more than one formulation. We recommend introducing one supplement at a time and consulting your physician if you are on prescription medications.
The majority of our formulations are plant-based by nature. Please check individual product pages for specific ingredient lists. Contact us if you have a specific dietary requirement.
Store in a cool, dry place away from direct sunlight and moisture. Do not store in the bathroom or near the kitchen sink. Keep out of reach of children.
The Rhythm Eating Lifestyle is a nutritional protocol developed by Dr. Farid Zarif on January 15, 1987. The 1st, 3rd, 5th, 7th, 10th, and 12th hours after waking represent peak windows for nutrient absorption. It is not a calorie-restriction diet — it is a timing protocol that works with your biology.
The six protocols work best as a complete system, but you do not have to implement everything at once. Dr. Zarif recommends starting with the 1st Hour Meal Protocol and building from there.
Many of Dr. Zarif's patients have experienced significant and sustained weight loss — some losing over 20 pounds within four months without calorie counting. Results naturally vary by individual and consistency of practice.
The protocol is designed in part to stabilise blood sugar. However, if you have diabetes or take blood sugar-regulating medication, consult your physician before changing your eating schedule.
All six protocol guides are available for free on this website. Dr. Zarif also shares extensive content on his YouTube channel.
Standard domestic orders typically arrive within 5–10 business days. International orders allow 10–21 business days. You will receive a tracking number by email once dispatched.
Yes — free standard shipping on all domestic orders over $65, calculated after discounts are applied.
Unopened products may be returned within 14 days of purchase for a full refund. Opened products may be eligible for partial refund or store credit. Contact us with your order number to begin.
Check your tracking number first. If tracking shows delivery but the package has not arrived, check with neighbours or your local post office. If unresolved, contact us with your order number.
Yes, we ship to most countries worldwide. International customers are responsible for any customs duties or import fees that may be charged upon delivery.
We accept all major credit and debit cards, PayPal, Apple Pay, Google Pay, and Shop Pay. All transactions are processed securely through Shopify's encrypted payment gateway.
Dr. Farid Zarif holds a Doctorate in Human Nutrition Science from Western University of Health Sciences. He completed his residency at Cedars-Sinai Medical Center and is affiliated with Ronald Reagan UCLA Medical Center and PIH Health Good Samaritan Hospital, with over 37 years of active clinical practice.
Dr. Zarif maintains an active clinical practice. For consultation enquiries, please contact us. In the meantime, he shares a great deal of free guidance through his YouTube channel and the protocol pages on this website.
Dr. Zarif publishes regular videos on his YouTube channel (@DrFaridZarif) covering herbal medicine, Rhythm Eating protocols, specific health conditions, and nutrition science. All content is free.
Slaves of the Tongue explores the deep connection between what we say, what we eat, and how we heal. It is part clinical insight, part philosophy — available to purchase directly from this store.
Some herbs can interact with prescription medications. We strongly recommend consulting your prescribing physician before adding any herbal supplement to your routine if you are on prescription medication. Please do not assume that "natural" means safe in all combinations.
Pregnant and breastfeeding women should not take any of our supplements without first consulting their obstetrician or midwife. Many herbs safe for general use are contraindicated during pregnancy.
Our supplements are formulated for adult use and are not intended for children under 18 unless directed by a qualified paediatric healthcare provider. Keep all supplements out of the reach of children.
Stop taking the supplement immediately and consult a healthcare professional. Severe reactions require emergency medical attention — call 911 or your local emergency number. Please also contact us to report the reaction.
No. As required by FDA guidelines, our herbal supplements are not intended to diagnose, treat, cure, or prevent any disease. The information on this website is for educational purposes only and is not a substitute for professional medical advice.
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Our team reads every message. Whether it's about a specific product, the Rhythm Eating protocols, or your order — we'll get back to you promptly.