Power of 4 Supplement Review
MyPower PowerDown Sleep Support Supplement
Looking for Tony Horton’s sleep supplement? MyPower PowerDown is a two-in-one sleep support supplement designed to support relaxation and calmness, restful sleep and healthy sleep quality.† The formula combines five disclosed active ingredients — magnesium citrate, valerian root extract, L-theanine, passionflower extract and hops extract — and is designed to support relaxation, restful sleep and healthy sleep quality.†

90 Capsules
45 Servings
5 Disclosed Active Ingredients
Affiliate Disclosure: I’m a MyPower Nutrition affiliate. If you purchase through links on this page, I may receive a commission at no additional cost to you.
Why Consider PowerDown?
MyPower PowerDown is a two-in-one sleep support supplement in vegetarian capsule form, designed to support the evening side of a consistent daily routine. Its five active ingredients are individually disclosed on the Supplement Facts panel, with no proprietary blend obscuring the amounts.†
Relaxation & Calm
Restful Sleep
Cognitive Function
Healthy Sleep Quality
What Is MyPower PowerDown?
If you’re looking for Tony Horton’s sleep supplement, MyPower PowerDown is a two-in-one sleep support supplement in vegetarian capsule form. Each bottle contains 90 capsules, providing 45 servings based on the standard two-capsule serving size. The formula combines magnesium citrate, valerian root extract, L-theanine, passionflower extract and hops extract, with each active ingredient individually disclosed on the Supplement Facts panel.
The two-in-one format uses one capsule in the morning and two capsules before bed. The official product caution limits daytime use to one capsule because of the sedative effect of valerian root extract at higher doses.
Valerian Root Extract
L-Theanine
Hops Extract
Passion Flower Extract
Magnesium
PowerDown Benefits
Below are the benefits exactly as approved by MyPower for PowerDown. We’ve grouped them by theme, but each statement is reproduced word for word. These are the only health and performance claims made about PowerDown on this page.
Relaxation & Stress
- Supports relaxation and calmness†
- Supports a positive response to stress†
- Helps maintain a calm and relaxed mood†
- Supports healthy nervous system function†
Sleep
- Helps promote restful sleep†
- Supports healthy sleep quality†
- Promotes relaxation before bedtime†
- Supports recovery during sleep†
- Supports healthy sleep patterns†
- Supports overall well-being through restorative sleep†
Cognitive Function
- Supports cognitive function†
PowerDown Ingredients
Here is the complete ingredient information from the official PowerDown product documentation. All active ingredient amounts are taken from the official Supplement Facts panel and reproduced accurately below.
Magnesium (as Magnesium Citrate) — 40mg
Magnesium is included in the formula as magnesium citrate at 40mg per serving. The amount is listed individually on the Supplement Facts panel.
Valerian Root Extract — 300mg
Valerian root extract is the largest active ingredient in PowerDown by weight and one of the most established botanical ingredients associated with relaxation and evening routines. The official PowerDown caution specifically references valerian root extract at higher doses, which is why the daytime dose is capped at one capsule. The full caution is reproduced in the How to Use section.
L-Theanine — 200mg
L-theanine is an amino acid found naturally in the leaves of Camellia sinensis — the plant used to produce green, black and white tea. At 200mg per serving, it is the second-largest active ingredient by weight in the PowerDown formula.
Passionflower Whole Plant Powder Extract — 90mg
Passionflower (Passiflora) whole plant powder extract is included at 90mg per serving. Passionflower is a botanical ingredient with a long history of traditional use and is a frequent component of natural relaxation and sleep-support products alongside valerian and hops.
Hops Leaf, Stem, and Flower Extract — 82mg
Hops (Humulus lupulus) leaf, stem and flower extract is included at 82mg per serving.
Other Ingredients: Vegetarian capsule (hypromellose).
Allergen Information: Formulated to be free of allergens derived from wheat, soy, dairy, casein, whey, artificial preservatives, sweeteners, colors and flavors.
| Magnesium (as Magnesium Citrate) | 40 mg · 10% |
| Valerian Root Extract | 300 mg · * |
| L-Theanine | 200 mg · * |
| Passionflower Whole Plant Powder Extract | 90 mg · * |
| Hops Leaf, Stem, and Flower Extract | 82 mg · * |
* Daily Value not established. Other Ingredients: Vegetarian capsule (hypromellose).

How to Use PowerDown
PowerDown uses a split-dose format — a different capsule count in the morning from the evening dose. The official suggested use and safety caution from the product sheet are reproduced here in full. Read the caution before purchasing or using this product.
Morning
Before Bed
Official Caution (reproduced from the PowerDown product sheet): Due to the sedative effect of valerian root extract at high doses, it is not recommended to take more than one (1) capsule during the daytime. Do not drive or operate heavy machinery after taking a dose of more than one (1) capsule.
If you are pregnant, nursing, anticipating surgery, taking medication, or under medical supervision, consult a healthcare professional before use.
PowerDown At a Glance
Here are the key factual product details from the official PowerDown documentation.
90 capsules.
45 Servings
5 Active ingredients
Vegetarian Capsule
No Proprietary Blend
No Artificial Additives
Who Might Consider PowerDown?
A sleep support supplement isn’t a fit for every situation, and it’s not a substitute for good sleep habits or professional medical care. But a few types of people tend to find a product like PowerDown worth adding to their evening routine:
Anyone who wants to add a structured evening supplement to a consistent daily routine and is interested in the approved PowerDown benefits.
Active people who already train regularly and are interested in the approved PowerDown benefits, including support for recovery during sleep.
People who are already using PowerUp or PlantProtein and want to complete the MyPower three-product routine with an evening step.
Anyone looking for a botanical-based sleep support supplement in capsule form, with clearly disclosed individual ingredient amounts.
People who prefer a vegetarian capsule format and a formula free of artificial preservatives, sweeteners, colors and flavors.
Important: Due to the sedative effect of valerian root extract at higher doses, PowerDown is not recommended for people who need to drive or operate heavy machinery after taking more than one capsule. If you are pregnant, nursing, anticipating surgery, taking medication, or under medical supervision, consult a healthcare professional before use. This page does not provide medical advice.
Tony Horton’s Sleep Supplement FAQ
What sleep supplement does Tony Horton have?
What is MyPower PowerDown?
How do you take PowerDown?
What does MyPower PowerDown support?
PowerDown as Part of the MyPower Daily Routine
PowerDown is designed to close out a three-product daily routine. Each product addresses a different part of the day and is made to complement the others — with no claim that combining them guarantees any particular result.
PowerUp — Morning
PlantProtein — Daily
PowerDown — Evening
All three products are also available together as the complete MyPower daily routine.
Ready to Try MyPower PowerDown?
† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Power of 4 Workout is an independent affiliate site and is not operated by, or the seller of, MyPower Nutrition products. Product information and images are used with permission as approved affiliate assets. Information on this page is for general educational purposes and is not medical advice.
