Ashwagandha gets all the attention, and deservedly so — it is the most researched adaptogen on the market. But traditional herbal systems almost never used adaptogens in isolation, and there is a sound reason for that. Adaptogens act on overlapping but distinct pathways. Stack them thoughtfully and you cover ground no single herb reaches.
Here is what the common ones actually do, and how they fit together.
What Makes a Herb an "Adaptogen"?
The term has a specific meaning, even if marketing has stretched it. To qualify, a plant should be non-toxic at normal doses, help the body cope with a broad range of stressors rather than one specific one, and have a normalising effect — nudging systems toward balance rather than pushing in one direction.
That last point is why adaptogens feel subtle. They are not stimulants. If you are expecting the hit of a strong coffee, you will be disappointed. What you are looking for over weeks is a raised floor: less flattened by the same pressures.
The Calm End: Ashwagandha and Reishi
Ashwagandha (KSM-66®) is the anchor of most stress formulas. Used in Ayurveda for centuries and the subject of more clinical trials than any other adaptogen, it sits at the calming end — stress response, sleep quality, and a general sense of settledness. The branded KSM-66 extract is root-only and produced without alcohol or chemical solvents.
Reishi (Ganoderma lucidum) is the mushroom the Chinese tradition called the "mushroom of immortality". It contributes immunomodulatory beta-glucans and has a long history of use for calm and sleep quality. It complements ashwagandha rather than duplicating it — same broad direction, different mechanism.
The Stamina End: Cordyceps, Ginseng and Maca
Cordyceps comes from the opposite direction. Traditionally used in Tibetan and Chinese medicine for stamina and endurance, it has been studied for oxygen utilisation and physical performance. If ashwagandha lowers the ceiling on stress, cordyceps raises the floor on energy.
Panax ginseng — Korean ginseng — is among the most researched adaptogens after ashwagandha, with ginsenosides studied for mental performance and fatigue. It leans cognitive and energising.
Peruvian maca is an Andean cruciferous root traditionally used for stamina, energy and hormonal balance. Unlike the others it is a food as much as a herb — eaten as a staple in parts of Peru.
The Focus End: Schisandra and Gotu Kola
Schisandra chinensis — the "five flavour berry", so called because it registers sweet, sour, salty, bitter and pungent at once — is a classical Chinese adaptogen used for endurance and mental focus.
Gotu kola (Centella asiatica) is used in Ayurveda for cognitive clarity, and separately for connective tissue. It is one of the few herbs that appears in both Ayurvedic and Chinese traditions with broadly similar uses.
The Supporting Cast: Turmeric and Black Pepper
Turmeric contributes curcuminoids for antioxidant support. Black pepper is not there for flavour — piperine improves the absorption of other botanicals, a pairing herbalists have used for a very long time and one of the better-evidenced ingredient interactions in the category.
Why B Vitamins Belong in a Stress Formula
This is the part most adaptogen products skip, and it is the only part with regulator-approved claims behind it.
- Vitamin B3 (niacin) — contributes to normal psychological function, normal energy-yielding metabolism and the reduction of tiredness and fatigue
- Vitamin B5 (pantothenic acid) — contributes to normal mental performance and the reduction of tiredness and fatigue
- Vitamin B6 — contributes to the regulation of hormonal activity, normal psychological function and normal nervous system function
- Vitamin B12 — contributes to normal psychological function and the reduction of tiredness and fatigue
These are EU-authorised health claims, meaning the evidence has been formally assessed. Herbal traditions are valuable, but they are not the same category of evidence — a formula carrying both is on firmer ground than one relying on botanicals alone.
Building the Stack
ZenBlend combines all of the above: KSM-66® ashwagandha with cordyceps, reishi, Panax ginseng, Peruvian maca, schisandra, gotu kola, liquorice, turmeric and black pepper, plus B3, B5, B6 and B12. Halal and kosher approved, vegan, 90 capsules.
How Long Before Anything Happens?
Longer than most people expect. Clinical trials on ashwagandha typically run 8 to 12 weeks. Most people notice something between weeks 2 and 6 — usually sleep quality first, then a sense that ordinary pressures land less heavily. Consistency matters far more than dose size.
If you take it for a fortnight and stop, you will conclude it does nothing, and you will not have given it a fair test.
Who Should Be Careful
- Pregnancy and breastfeeding — avoid adaptogen blends.
- High blood pressure or kidney disease — formulas containing liquorice, including ZenBlend, are not suitable. Glycyrrhizin can raise blood pressure and lower potassium with prolonged use.
- Thyroid conditions — ashwagandha can affect thyroid hormone levels.
- Prescription medication — particularly sedatives, immunosuppressants and blood pressure medicines. Check with your GP first.
Browse the full Energy & Focus UK range, or read our complete ashwagandha guide.
Food supplements should not replace a varied diet or healthy lifestyle. This article is general information, not medical advice. Consult your GP before starting any supplement if you are pregnant, breastfeeding, taking prescription medication or managing a diagnosed condition.
