Sleep Guard 90c by Perque – Nutritional Sleep Support Capsules
Sleep Guard capsules by Perque combine 500 mg of L-tryptophan with riboflavin and vitamin B-6 in a vegetable capsule for nutritional sleep support. Rather than supplying melatonin directly, this formula provides an amino acid the body uses in its own serotonin and melatonin pathways.
The 90-capsule bottle suits adults comparing a tryptophan-based approach with supplements that contain added hormones or botanical blends. Its three headline nutrients have different roles: tryptophan supplies a building block, while the B vitamins help enzymes carry out normal cellular reactions. That distinction helps explain the formula without promising a particular bedtime result.
Key Sleep Guard 90c Benefits
- Provides tryptophan, an essential amino acid used in normal serotonin synthesis and the pathway that produces the sleep-timing hormone melatonin.
- Supplies vitamin B-6 to support the enzyme reactions involved in amino acid metabolism and normal neurotransmitter production.
- Includes riboflavin to support cellular energy metabolism, complementing the formula's amino acid focus with an essential B-vitamin cofactor.
How Sleep Guard 90c Works
Your body converts tryptophan through several metabolic pathways. One produces serotonin, a chemical messenger involved in normal mood and sleep regulation. Serotonin also serves as a starting material for melatonin, which helps communicate nighttime timing. Providing a precursor is different from supplying a finished hormone; the body still controls these conversions through its own enzymes.
The B vitamins contribute to that nutritional framework rather than acting as additional sleep hormones. Sleep Guard is not a complete B-complex, and the formula's nutrient roles should not be confused with a guarantee of deeper sleep or a set time to fall asleep.
Key Functional Ingredients Include:
- L-Tryptophan: Supplies an essential amino acid used to build proteins and provide material for serotonin production. Serotonin can subsequently become melatonin, connecting tryptophan's normal nutritional role with the body's sleep-wake signaling. This is precursor support, not a direct melatonin dose.
- Vitamin B-6: Provides pyridoxal 5'-phosphate, a coenzyme used in amino acid processing and neurotransmitter synthesis. Coenzymes help enzymes complete chemical reactions, including steps involved in making serotonin. Its role here is nutritional support for normal metabolism, not an independent sedative effect.
- Riboflavin: Contributes to flavin coenzymes that help cells transfer energy during normal metabolism. These enzyme helpers support everyday cellular function, including within the nervous system. Riboflavin complements the tryptophan formula without being a sleep hormone or a promise of next-day energy.
Sleep Guard 90c Is Formulated For
- Adults seeking a tryptophan-centered supplement to complement their nighttime routine.
- People comparing amino acid formulas with products containing added melatonin.
Supplements support your health but do not replace a balanced diet. Always check with your healthcare practitioner if you have doubts about a new supplement. Or you may book a FREE product consultation with Holistic Health Partners, led by Carolyn Mulally BS, RN, HN-BC. You may also wish to explore our other Sleep Supplements, Speciality Formulations for Sleep, and PERQUE Integrative Health Supplements and Vitamins collections.
Recommendation: One capsule daily about 30 min before bedtime, or as recommended by a healthcare professional.
Serving Size: 1 Vegetable Capsule
Servings Per Container: 90
Riboflavin (as Riboflavin 5'-Phosphate) ... 3 mg
Vitamin B-6 (as Pyridoxal 5'-Phosphate) ... 3 mg
L-Tryptophan ... 500 mg
Silica (Equisetum botanical) ... 4 mg
Croscarmellose ... 3 mg
C16 & C18 alkyls† ... 5 mg
Vegetable Capsule ... 120 mg
†From whole untreated palm fruit and leaf
*Daily value not established
Other Ingredients: None
Does Not Contain: Citrus, MSG, wheat, gluten, corn, starch, sugar, soy, yeast, zein, sulfates, phosphates (other than coenzymes), preservatives, casein or other milk derivatives.
No GMO's; No toxic minerals or metals
Storage: Must be stored with cap on tightly in a cool, dry place.
Additional precautions: Tryptophan can cause drowsiness, nausea, dizziness or tremor. Do not drive if drowsy or dizzy. Combining tryptophan with serotonin-raising medicines, including antidepressants, can cause serotonin syndrome. Have your prescriber review medicines and supplements before use.
Frequently Asked Questions About Sleep Guard 90c
What are the benefits of Sleep Guard 90c?
Sleep Guard 90c provides 500 mg of L-tryptophan, 3 mg of riboflavin and 3 mg of vitamin B-6 per vegetable capsule. Tryptophan supplies material for normal serotonin and melatonin pathways, while the B vitamins support enzyme activity and cellular metabolism. The formula offers a nutritional approach to nighttime support without adding melatonin itself. Those ingredient roles explain its purpose, but they do not guarantee a specific sleep duration, faster sleep onset or the same response for every person.
Who should take Sleep Guard 90c?
Sleep Guard 90c is an option for adults who want a tryptophan-based supplement alongside a consistent bedtime routine. It is particularly relevant when comparing amino acid formulas with products containing added melatonin, because its main ingredient is a precursor rather than the hormone itself. The label directs one capsule daily about 30 min before bedtime, or as recommended by a healthcare professional. Pregnancy, nursing and use of serotonin-raising medicines require professional review; this description is not a recommendation for children.
Are there any side effects of taking Sleep Guard 90c?
Tryptophan can cause drowsiness, nausea, dizziness or tremor. Do not drive if drowsy or dizzy. Combining it with serotonin-raising medicines, including antidepressants, can cause serotonin syndrome; ask your prescriber before use. Keep out of reach of children. Do not use product if the tamper-resistant shrink band around the cap or the inner seal beneath the cap appears to have been tampered with or is missing. Warning: Pregnant and nursing mothers need to check with their health professional before taking supplements. Review other supplements with your practitioner rather than combining sleep products on your own.
How does Sleep Guard 90c support overall health?
Sleep Guard 90c contributes nutrients used in ordinary protein, neurotransmitter and energy metabolism. L-tryptophan is an essential amino acid, while vitamin B-6 helps enzymes process amino acids and riboflavin supports flavin-dependent cellular reactions. Together, these roles connect the formula with the nutritional processes underlying normal nervous-system function and sleep-wake signaling. It remains a targeted supplement rather than a complete nutritional program. Regular sleep timing, adequate food intake and professional assessment of persistent sleep difficulties remain important alongside any bedtime supplement.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
